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BEHAVIOUR OF α-NITROSO-β-NAPHTHOL IN HEMATITE FLOTATION
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作者 WANG Wenmei YU Yongfu CHEN Quanyuan 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1993年第11期4-4,共1页
Based on theoretical calculation of electronegativity of groups of flotation reagent and method of infrared adsorption spectroscopy,the collection and adsorption of α-nitroso-β- naphthol in hematite flotation have b... Based on theoretical calculation of electronegativity of groups of flotation reagent and method of infrared adsorption spectroscopy,the collection and adsorption of α-nitroso-β- naphthol in hematite flotation have been studied.The chemical adsorption seems to be predominant owing to formation of pentacyclic nitrosyl chelate compound by atoms of nitrosyl bond in α-nitroso-β-naphthol together with Fe(Ⅲ)on hematite surface.Mean- while,the nonuniform multilayer physical adsorption is also occurred. 展开更多
关键词 α-nitroso-β-naphthol HEMATITE ELECTRONEGATIVITY chelate property FLOTATION
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Sulphamic Acid (H2NSO3H)-Catalyzed Multicomponent Reaction of β-Naphthol: An Expeditious Synthesis of Amidoalkyl Naphthols 被引量:6
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作者 NAGAWADE, Rahul R. SHINDE, Devanand B. 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2007年第11期1710-1714,共5页
Sulphamic acid (H2NSO3H) was found to be an efficient catalyst for the multicomponent condensation reaction of β-naphthol, aromatic aldehydes and urea or amides to afford the corresponding α-amidoalkyl-β-naphthol... Sulphamic acid (H2NSO3H) was found to be an efficient catalyst for the multicomponent condensation reaction of β-naphthol, aromatic aldehydes and urea or amides to afford the corresponding α-amidoalkyl-β-naphthols in good yields. The remarkable features of this new procedure are high conversions, short reaction time, clean reaction profiles and simple experimental and work-up procedures. 展开更多
关键词 sulphamic acid multicomponent reaction CONDENSATION β-naphthol aryl aldehyde UREA
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α-萘酚型和β-萘酚型偶氮染料在四极杆/静电场轨道阱高分辨质谱的裂解规律分析
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作者 林子豪 曾巧辉 +2 位作者 周庆琼 古敏 戚平 《广州化工》 CAS 2024年第20期75-77,共3页
采用四极杆/静电场轨道阱高分辨质谱仪直接采集碎裂片段的精确质荷比(m/z),通过元素模拟得到各主要碎片的元素组成并进行比对,研究了α-萘酚型和β-萘酚型偶氮染料的质谱裂解规律。结果表明:两种染料均存在偶氮式和腙式两种形态。在腙... 采用四极杆/静电场轨道阱高分辨质谱仪直接采集碎裂片段的精确质荷比(m/z),通过元素模拟得到各主要碎片的元素组成并进行比对,研究了α-萘酚型和β-萘酚型偶氮染料的质谱裂解规律。结果表明:两种染料均存在偶氮式和腙式两种形态。在腙式形态时,断裂位点均发生在氮氮键。在偶氮式形态时,β-萘酚型更容易丢失萘酚上的羟基,而α-萘酚型则在偶氮键和萘酚之间发生断裂。总的来说,β-萘酚型更倾向于腙式的裂解方式,而α-萘酚型更倾向于偶氮式的裂解方式。 展开更多
关键词 偶氮染料 α-萘酚型 β-萘酚型 四极杆/静电场轨道阱高分辨质谱 质谱裂解规律
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Lewis acid-catalyzed enantioselective Friedel-Crafts reaction of pyrazole-4,5-diones withβ-naphthol
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作者 Yangmian Lu Jindong Li +3 位作者 Weizhi Gu Ning Li Zhenggen Zha Zhiyong Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第8期4048-4052,共5页
A series of pyrazolone derivatives bearing a tetrasubstituted chiral center were prepared by virtue of a Lewis acid-catalyzed Friedel-Crafts reaction,in which a chiral copper complex was employed as the catalyst.This ... A series of pyrazolone derivatives bearing a tetrasubstituted chiral center were prepared by virtue of a Lewis acid-catalyzed Friedel-Crafts reaction,in which a chiral copper complex was employed as the catalyst.This reaction can be carried out smoothly under mild condition to afford the pyrazolone derivatives with high yields(up to 85%)and excellent enantioselectivities(up to 99%).In addition,the gram scale synthesis proved the practicality of this reaction. 展开更多
关键词 Asymmetry Friedel-Crafts reaction Lewis acid-catalyst Pyrazole-4 5-diones β-naphthol
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Environmentally Benign Synthetic Protocol for O-Alkylation of <i>β</i>-Naphthols and Hydroxy Pyridines in Aqueous Micellar Media
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作者 Kancharla Rajendar Reddy Kamatala Chinna Rajanna +2 位作者 Soma Ramgopal Mukka Satish Kumar Sariah Sana 《Green and Sustainable Chemistry》 2012年第4期123-132,共10页
Ultrasonic and microwave-assisted practical methods have been developed for the O-alkylation of aryl (β-naphthols) and Heteroaryl (hydroxy pyridines) in aqueous surfactant media in good to excellent yields. The devel... Ultrasonic and microwave-assisted practical methods have been developed for the O-alkylation of aryl (β-naphthols) and Heteroaryl (hydroxy pyridines) in aqueous surfactant media in good to excellent yields. The developed methods are simple, efficient, economical and environmentally safe. Our novel methods describe a set of green methods to Wil-liamson synthesis. 展开更多
关键词 Ultrasonically ASSISTED Microwave ASSISTED Green Chemistry Micelles β-naphthols Heteroaryl HYDROXY Compounds Alcohols
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Biodegradation of 2-naphthol and its metabolites by coupling Aspergillus niger with Bacillus subtilis 被引量:8
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作者 Shuyan Zang Bin Lian +1 位作者 Juan Wang Yanjie Yang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2010年第5期669-674,共6页
To explore biodegradation of 2-naphthol and its metabolites accumulated in wastewater treatment,a series of bio-degradation experiments were conducted.Two main metabolites of 2-naphthol,1,2-naphthalene-diol and 1,2-na... To explore biodegradation of 2-naphthol and its metabolites accumulated in wastewater treatment,a series of bio-degradation experiments were conducted.Two main metabolites of 2-naphthol,1,2-naphthalene-diol and 1,2-naphthoquinone,were identified by high-performance liquid chromatography with standards.Combining fungus Aspergillus niger with bacterium Bacillus subtilis in the treatment enhanced 2-naphthol degradation efficiency,lowered the accumulation of the two toxic metabolites.There were two main phases during the degradation process by the kinetic analysis:2-naphthol was first partly degraded by the fungus,producing labile and easily accumulated metabolites,and then the metabolites were mainly degraded by the bacterium,attested by the degradation processes of 1,2-naphthalene-diol and 1,2-naphthoquinone as sole source of carbon and energy.Sodium succinate,as a co-metabolic substrate,was the most suitable compound for the continuous degradation.The optimum concentration of 2-naphthol was 50 mg/L.The overall 2-naphthol degradation rate was 92%,and the COD Cr removal rate was 80% on day 10.These results indicated that high degradation rate of 2-naphthol should not be considered as the sole desirable criterion for the bioremediation of 2-naphtholcontaminated soils/wastewater. 展开更多
关键词 2-naphthol METABOLITES IDENTIFY continuous degradation accumulation
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Sorption of 1-naphthol by plant cuticular fractions 被引量:3
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作者 CHEN Bao-liang LI Yun-gui 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第10期1214-1220,共7页
The contribution of aliphatic-rich plant biopolymer to sorption of hydrophobic organic compounds is significantly important because of their preservation and accumulation in the soil environment, but sorption mechanis... The contribution of aliphatic-rich plant biopolymer to sorption of hydrophobic organic compounds is significantly important because of their preservation and accumulation in the soil environment, but sorption mechanism is still not fully understood. In this study, sorption of 1-naphthol by plant cuticular fractions was examined to better understand the contributions of respective fraction. Toward this end, cuticular materials were isolated from the fruits of tomato by chemical method. The tomato cuticle sheet consisted of waxes (6.5 wt%), cuticular monomer (69.5 wt%), and polysaccharide (24.0 wt%). Isotherms of 1-naphthol to the cuticular fractions were nonlinear (N value (0.82 - 0.90)) at the whole tested concentration ranges. The K∞/Kow ratios for bulk cuticle (TC1), dewaxed cuticle (TC2), cutin (TC4), and desugared cuticle (TC5) were larger than unity, suggested that tomato bulk cuticle and cutin are much powerful sorption medium. Sorption capability of cutin (TC4) was 2.4 times higher than the nonsaponifiable fraction (TC3). The 1-naphthol interactions with tomato cuticular materials were governed by both hydrophobic-type interactions and polar (H-bonding) interactions. Removal of the wax and polysaccharide materials from the bulk tomato cuticle caused a significant increase in the sorption ability of the cuticular material. There was a linear negative trend between K∞ values and the amount of polysaccharides or fraction's polarities ((N+O)/C); while a linear positive relationship between K∞ values and the content ofcutin monomer (linear R^2 = 0.993) was observed for present in the cuticular fractions. Predominant sorbent of the hydrophobic organic compounds (HOCs) in the plant cuticular fraction was the cutin monomer, contributing to 91.7% of the total sorption of tomato bulk cuticle. 展开更多
关键词 plant cuticle 1-naphthol SORPTION cutin monomer
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Synthesis of 1,1'-binaphthyl-2,2'-diamine from 2-naphthol under atmospheric pressure 被引量:5
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作者 Qiang Feng Chao Zhang Qiang Tang Mei Ming Luo 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第10期1150-1152,共3页
A practical protocol to obtain 1,1′-binaphthyl-2,2′-diamine was developed from 2-naphthol and 2-naphthylhydrazine under mild conditions: solvent-free, 125-130 ℃, atmospheric pressure. The convenient procedure make... A practical protocol to obtain 1,1′-binaphthyl-2,2′-diamine was developed from 2-naphthol and 2-naphthylhydrazine under mild conditions: solvent-free, 125-130 ℃, atmospheric pressure. The convenient procedure makes the process amenable for large-scale synthesis of the versatile compound. 展开更多
关键词 1 1′-Binaphthyl-2 2′-diamine 2-naphthol 2-Naphthylhydrazine Synthesis
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Effects of the surface chemistry of macroreticular adsorbents on the adsorption of 1-naphthol/1-naphthylamine mixtures from water 被引量:2
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作者 ZHANG Wei-ming CHEN Jin-long +3 位作者 CHEN Qun HE Min-yang PAN Bing-cai ZHANG Quan-xing 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2005年第5期782-785,共4页
The adsorption behaviors of 1-naphthol, 1-naphthylamine and l-naphthol/l-naphthylamine mixtures in water over two macroreticular adsorbents were investigated in single or binary batch systems at 293 K, 303 K and 313 K... The adsorption behaviors of 1-naphthol, 1-naphthylamine and l-naphthol/l-naphthylamine mixtures in water over two macroreticular adsorbents were investigated in single or binary batch systems at 293 K, 303 K and 313 K respectively. All the adsorption isotherms in the studied systems can be adequately fitted by Langmuir model. In the case of aminated macroreticular adsorbent NDA103, 1-naphthol is adsorbed to a larger extent than 1-naphthylamine; while, the opposite trend is found for nonpolar macroreticular adsorbent NDA100. It is noteworthy that at higher temperature(303 K and 313 K), the total uptake amounts of 1-naphthol and 1-naphthylamine in all binary-component systems are obvious larger than the pure uptake amounts in single-component systems, which is presumably due to the cooperative effect primarily arisen from the hydrogen-bonding interaction between the loaded 1-naphthol and 1-naphthylamine molecules. The simultaneous adsorption systems were confirmed to be helpful to the selective adsorption towards 1-naphthol according to the larger selective index. 展开更多
关键词 macroreticular adsorbent ADSORPTION 1-naphthol 1-NAPHTHYLAMINE cooperative effect
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ADSORPTION OF LATERALLY INTERACTING 1-NAPHTHOL/1-NAPHTHYL-AMINE MIXTURES ON NONPOLAR SURFACES FROM AQUEOUS SOLUTIONS 被引量:1
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作者 Wei-ming Zhang Jin-long Chen +2 位作者 Qun Chen Ming-yang He Bing-cai Pan and Quan-xing Zhang a State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment,Nanjing University,Nanjing 210093,China b Research Center for Engineering Technology of Organic Poison Control and Resources Reuse in Jiangsu Province,Nanjing 210038,China c Department of Chemical Engineering,Jiangsu Polytechnic,Changzhou 213016,China 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2006年第1期73-80,共8页
The binary adsorption behavior of 1-naphthol/1-naphthylamine mixtures in water on nonpolar adsorbent Amberlite XAD4 was investigated at 293 K, 303 K and 313 K, respectively. The experimental uptakes of 1-naphthol and ... The binary adsorption behavior of 1-naphthol/1-naphthylamine mixtures in water on nonpolar adsorbent Amberlite XAD4 was investigated at 293 K, 303 K and 313 K, respectively. The experimental uptakes of 1-naphthol and 1-naphthylamine in all binary-component systems of different molar ratios were obviously higher than the corresponding uptakes predicted by the extended Langmuir model, assuming no interaction between the adsorbed molecules of the two components. This phenomenon was attributed to the cooperative adsorption effect arising from the hydrogen bonding interaction between 1-naphthol and 1-naphthylamine molecules. A modified extended Langmuir model was proposed to describe the binary adsorption behavior by means of introducing a fitting parameter related with the cooperative adsorption effect of the adsorbates. 展开更多
关键词 Modified model 1-naphthol 1-NAPHTHYLAMINE Adsorbate-adsorbate interaction Cooperative effect.
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Solid-Liquid Extraction of Some Lanthanide Complexes with 1-Nitroso-2-Naphthol
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作者 Jin Zhang GAO Xiao Jun GUO +2 位作者 Bi WANG Qi Liang DENG Hai Yan FAN(Department of Chemistry, Northwest Normal University, Lanzhou 730070) 《Chinese Chemical Letters》 SCIE CAS CSCD 2000年第7期653-654,共2页
The extraction behavior of Sm(III), Eu(III),Er(III) and Yb(III) with 1- nitroso -2-naphthol (HA) in paraffin has been studied. The composition of,extracted complexes has been determined to be LnA(3) by slope analysis ... The extraction behavior of Sm(III), Eu(III),Er(III) and Yb(III) with 1- nitroso -2-naphthol (HA) in paraffin has been studied. The composition of,extracted complexes has been determined to be LnA(3) by slope analysis method. The effect of temperature on extraction system is also investigated and thermodynamic parameters are obtained. 展开更多
关键词 SOLID-LIQUID LANTHANIDE 1-nitroso-2-naphthol
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Regioselective Halogenation and Dimerization of 2-Naphthol and 6-Br-2-naphthol by the Use of Inorganic-Supported Copper (II) Halides
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《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1999年第S1期286-286,共1页
关键词 II HALIDES Regioselective Halogenation and Dimerization of 2-naphthol and 6-Br-2-naphthol by the Use of Inorganic-Supported Copper BR
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Cobalt Determination by Means of Flow Injection On-line Sorbent Preconcentration-Flame Atomic Absorption Spectrometry with 1-Nitroso-2-naphthol as a Complexing Reagent
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作者 YIN Xue-feng ALI Akbar +3 位作者 XU Guang-ming LING Yun-yang GAO Jian YE Mei-ying 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2001年第3期264-270,共7页
The suitability of 1-nitroso-2-naphthol(NN) as a complexing agent for on-line preconcentration of cobalt eluted on the C_(18) microcolumn by means of the FI-FAAS system was tested. Various parameters affecting the com... The suitability of 1-nitroso-2-naphthol(NN) as a complexing agent for on-line preconcentration of cobalt eluted on the C_(18) microcolumn by means of the FI-FAAS system was tested. Various parameters affecting the complex formation and its elution were optimized. A 2.3×10^(-3) mol/L reagent solution and the aqueous sample solution acidified with 0.1% (volume fraction) nitric acid were on-line mixed (6.4 mL/min) on a reaction coil set at (65±1)℃ and flowed through the microcolumn for 30 s. The pH of the mixed solution was adjusted to 3—4 with HNO_3(1 mol/L) or NaOH(1 mol/L). The adsorbed complexes in the microcolumn were eluted into the nebulizer of FAAS in 10 s with ethanol acidified with 1% HNO_3(3.0 mL/min). A good precision(1.6% for 100μg/L Co(Ⅱ), n=10), a high enrichment factor 17.2, with detection limit (3σ) 3.2μg/L, and sample throughput (90 h^(-1)) were obtained. The method was applied to the certified reference materials(CRMs), NBS-362 and NBS-364, for the determination of cobalt and the results were in good agreement with the certified values. 展开更多
关键词 Cobalt FI on-line preconcentration AAS 1-Nitroso-2-naphthol
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SOLVENTLESS CYCLOCONDENSATIONS BETWEEN 1-NAPHTHOL AND BENZILS
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作者 Ji Ben MENG Zhong WEN Yong Mei WANG Hong Gen WANG Department of Chemistry and Central Laboratory,Nankai University,Tianjin,300071 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第10期861-864,共4页
In the absence of organic solvents,the Lewis acid catalyzed cyclocondensation reactions between 1-naphthol and benzils gave 3-aryl-3-aryl'naphtho[1,2-b]furan-2(3H)-ones(NFs) in good yields(62%~70%)An electrophili... In the absence of organic solvents,the Lewis acid catalyzed cyclocondensation reactions between 1-naphthol and benzils gave 3-aryl-3-aryl'naphtho[1,2-b]furan-2(3H)-ones(NFs) in good yields(62%~70%)An electrophilic substitution mechanism involving formation of n-EPD/v- EPA complexes and rearrangement of aryl group was proposed. 展开更多
关键词 IR SOLVENTLESS CYCLOCONDENSATIONS BETWEEN 1-naphthol AND BENZILS KBR NF
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Synergistic Extraction of Lanthanides by 1-Nitroso-2-Naphthol and Trioctylphosphine Oxide in Paraffin Wax
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作者 郭效军 高锦章 +4 位作者 范海燕 彭波 王碧 邓启良 康敬万 《Rare Metals》 SCIE EI CAS CSCD 2000年第4期306-311,共6页
The paraffin wax was used as a diluent for 1-nitroso-2-naphthol(HA) and trioctylphosphine oxide(TOPO) in the extraction of lanthanides at 70℃. The composition of the extracted species was given as LnA_3(TOPO)_2 by me... The paraffin wax was used as a diluent for 1-nitroso-2-naphthol(HA) and trioctylphosphine oxide(TOPO) in the extraction of lanthanides at 70℃. The composition of the extracted species was given as LnA_3(TOPO)_2 by means of the slope analysis. The variation of the synergistic extraction equilibrium constant(K_ sex) was investigated at 60~80℃, and the thermodynamic data were calculated. The dependence of separation factors on temperature was also studied. 展开更多
关键词 Synergistic extraction LANTHANIDES 1-nitroso-2-naphthol Trioctylphosphine oxide
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A Convenient Preparation of Enantiopure 1,1'-bi-2-naphthols via an Inclusion Complexation in the Solid State
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作者 Shan Zi-xing, Xiong Ying, Huang Shi-wen, Yun Hua-rong, Zhao De-jie College of Chemistry and Environmental Science, Wuhan University, Wuhan, 430072, China 《Wuhan University Journal of Natural Sciences》 CAS 2000年第4期469-473,共5页
Inclusion reaction of reaction 1, 1'-bi-2-naphthol and (S)-proline was examined uuder the solid state and the solid-liquid conditions. The results indicated that a solid mixture of racemic 1, 1'-bi-2-naphthol ... Inclusion reaction of reaction 1, 1'-bi-2-naphthol and (S)-proline was examined uuder the solid state and the solid-liquid conditions. The results indicated that a solid mixture of racemic 1, 1'-bi-2-naphthol and (S)-proline in a 1 : 1 molar ratio was kept at 50-80 for 3-4 h, followed by treatment with benzene to give an insoluble solid and a benzene solution, from which (S)- (- )- and (R)-(+)-1, 1'-bi-2-naphthols of a modest level or optical purity were obtained. Arter 'kinetic' crystallization, both essentially enantiopure iso- mers were provided in 15%-35 % overall yields ,respectively. 展开更多
关键词 1 1'-bi-2-naphthol ENANTIOMER PREPARATION inclusion reaction
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Effects of 1-Naphthol on Physiological Parameters of Chlorella vulgaris
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作者 Liping QIU Yonghong LUO +2 位作者 Jianhong QU Gengdong HU Jiazhang CHEN 《Agricultural Biotechnology》 CAS 2014年第4期45-48,52,共5页
[ Objective] This study aimed to investigate the effects of 1-naphthol on primary productivity in aquatic ecosystems. [ Method] The effects of 1-naphthol on biomass, chlorophyll a content, malondialdehyde (MDA) cont... [ Objective] This study aimed to investigate the effects of 1-naphthol on primary productivity in aquatic ecosystems. [ Method] The effects of 1-naphthol on biomass, chlorophyll a content, malondialdehyde (MDA) content and soluble protein content of Chlorella vulgaris were investigated. [ Result] 1-Naphthol could significantly inhibit the growth of Chlorella vulgaris. On the 7^th d, the biomass of Chlorella vulgaris exposed to 1.0, 3.0, 6.0, 12.0 and 18.0 mg/L 1-naphthol was 60.26%, 48.15%, 41.32%, 28.59% and 27.10% of that in control respectively, exhibiting a significant dose-response relationship. Chlorella vulgaris was exposed to different concentrations of 1-naphthol (0, 1,5 and 10 mg/L) for 7 d ; with the increase of 1-naphthol concentration, chlorophyll a content of Ch/orella vulgaris was reduced, MDA content increased gradually, soluble protein content increased first and then declined. [ Conclusion] According to the experimental results, 1-naphthol can significantly inhibit the growth of Chlorella vulgaris, thus reducing primary productivity in aquatic ecosystems. 展开更多
关键词 1-naphthol Chlorella vulgaris BIOMASS Physiological parameter
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Design and synthesis of chiral Ti-1,1′-bi-2-naphthol coordination polymers for heterogeneous catalytic asymmetric oxidation of sulfides
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作者 袁小亚 《Journal of Chongqing University》 CAS 2008年第3期179-185,共7页
Polymer-immobilized catalysis has many advantages such as easy recovery and reuse of catalyst. We prepared three novel chiral 1,1'-bi-2-naphthol-Ti coordination polymers with properly designed ligands and Ti(O^ipr)... Polymer-immobilized catalysis has many advantages such as easy recovery and reuse of catalyst. We prepared three novel chiral 1,1'-bi-2-naphthol-Ti coordination polymers with properly designed ligands and Ti(O^ipr)4 under mild conditions. The prepared polymers exhibited good activity and excellent enantioselectivity (over 99%ee) in catalyzing the asymmetric oxidation of sulfides. The bridge linker in the polymer and the reaction solvent noticeably affected the enantioseleetivity. The chiral coordination polymer was very stable and easy to separate from catalyzed reaction systems, with no significant loss of activity or enantioselectivity after reuse for at least ten times. These findings suggest a promising type of catalysts for synthesizing the widely used sulfoxides by asymmetrically oxidizing sulfides. 展开更多
关键词 catalysts coordination polymer 1 1'-bi-2-naphthol asymmetric catalysis IMMOBILIZATION SULFOXIDATION
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STUDY ON INCLUSION COMPLEXATION: 1.INCLUSION COMPLEXATION OF CHIRAL 2,5-PIPERAZINEDIONE DERIVED FROM (S)-PROLINE WITH 1,1'-BI-2-NAPHTHOL
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《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1999年第S1期190-190,共1页
关键词 BI-2-naphthol INCLUSION COMPLEXATION OF CHIRAL 2 5-PIPERAZINEDIONE DERIVED FROM PROLINE WITH 1 1
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偶氮类染料中间体R4的连续流合成工艺研究
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作者 王鹏 严生虎 +5 位作者 张跃 刘建武 沈介发 刘涛 马晓明 辜顺林 《现代化工》 CAS CSCD 北大核心 2023年第10期190-194,共5页
以2-氨基-4-硝基苯酚为重氮组分、β-萘酚为偶合组分,利用具有脉冲混合结构的微通道反应器进行连续偶合反应;考察了反应温度、反应时间、盐酸的用量对重氮化反应的影响,以及反应温度、反应时间、反应体系pH对偶合反应的影响。通过实验... 以2-氨基-4-硝基苯酚为重氮组分、β-萘酚为偶合组分,利用具有脉冲混合结构的微通道反应器进行连续偶合反应;考察了反应温度、反应时间、盐酸的用量对重氮化反应的影响,以及反应温度、反应时间、反应体系pH对偶合反应的影响。通过实验确定了较优的工艺条件为:2-氨基-4-硝基苯酚与β-萘酚摩尔比为1∶1.01、反应温度为20℃、助剂1与β-萘酚的质量比为3∶1、反应体系pH为6,该条件下反应的总收率为98.0%。研究结果表明,与间歇法相比,连续流工艺使反应时间缩短了近80%,反应收率提高了近5%,有利于降低原料消耗和工艺过程的能耗,提高生产效率。 展开更多
关键词 2-氨基-4-硝基苯酚 Β-萘酚 偶合反应 连续流 微通道反应器
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