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Synthesis of Chlorosulfonyl-containing Pyrazolone Azo Compounds with Thionyl Chloride-DMF System 被引量:3
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作者 汤立军 张淑芬 +2 位作者 崔志华 杨锦宗 高文涛 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2004年第5期719-722,共4页
Chlorosulfonyl-containing pyrazolone azo compounds (2a, 2b) have been prepared by reaction of the corresponding sodium sulfonate (1a, 1b) with thionyl chloride in the presence of a catalytic quantity of N,Ndimethylfor... Chlorosulfonyl-containing pyrazolone azo compounds (2a, 2b) have been prepared by reaction of the corresponding sodium sulfonate (1a, 1b) with thionyl chloride in the presence of a catalytic quantity of N,Ndimethylformamide in dry benzene. The effects of reaction temperature, time, catalyst and solvent amount on the yield of 2a and 2b were investigated. The results show that chlorination of 1a and 1b under optimal conditions gives 2a and 2b in 95.5% and 99.2% yield respectively. The given method is facile and suitable for large-scale synthesis. 展开更多
关键词 azo compounds thionyl chloride CHLORINATION PYRAZOLONE SYNTHESIS
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Iodine catalyzed efficient synthesis of symmetrical diaryl sulfoxides from arenes and thionyl chloride under solvent-free conditions 被引量:2
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作者 Hong She Wang Jun E. Zeng 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第12期1447-1450,共4页
Synthesis of symmetrical diaryl sulfoxides from arenes and thionyl chloride in the presence of a catalytic amount of iodine at room temperature under solvent-free conditions is described. Mild reaction conditions, eas... Synthesis of symmetrical diaryl sulfoxides from arenes and thionyl chloride in the presence of a catalytic amount of iodine at room temperature under solvent-free conditions is described. Mild reaction conditions, easy workup, high yield, and easily available catalyst are important features of this method. 展开更多
关键词 Aryl sulfoxides ARENES thionyl chloride
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PREPARATION OF POLY (LACTIC ACID)THROUGH THIONYL CHLORIDE ACTIVATED POLYCONDENSATION
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作者 WANG Zheng LULinhua +1 位作者 ZHAO Xueming YAO Kangde 《Chinese Journal of Reactive Polymers》 2000年第2期156-163,共8页
A two-step process was used to synthesize the high molecular weight poly (lactic acid) using thionyl chloride as an activator for the polycondensation of prepolymer of lactic acid. The products were characterized by G... A two-step process was used to synthesize the high molecular weight poly (lactic acid) using thionyl chloride as an activator for the polycondensation of prepolymer of lactic acid. The products were characterized by GPC, DSC, and 1H-NMR. Poly (L-lactic acid) (PLLA) with molecular weight Mw: 32875 was obtained when thionyl chloride was used, while low molecular weight PLLA Mw: 7350 was yielded without thionyl chloride. Effects of the concentration of thionyl chloride, polymerization time and bases on the molecular weight of poly (lactic acid) were investigated. In DSC scans the glass transition temperatures (Tg) of the resulting polymers varied from 25.3 to 57.6℃, and the Tg of poly(L-lactic acid) was higher than that of poly (D,L-lactic acid) (PDLLA). The melting points of poly (L-lactic acid) and poly (D, L-lactic acid) could not be found unless the polymers were obtained by thionyl chloride activator. 展开更多
关键词 Poly (lactic acid) thionyl chloride POLYCONDENSATION
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Three-Body Photodissociation of Thionyl Chloride
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作者 Bumaliya Abulimiti Qiao-li Hao +2 位作者 Chen Qin Mei Xiang Bing Zhang 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2018年第3期257-262,367,共7页
The ultrafast photodissociation dynamics of thionyl chloride after excitation with a 235 nm pump pulse has been studied using a femtosecond time-resolved mass spectroscopy.The observed parent transient suggests that t... The ultrafast photodissociation dynamics of thionyl chloride after excitation with a 235 nm pump pulse has been studied using a femtosecond time-resolved mass spectroscopy.The observed parent transient suggests that the excited states initiated by 235 nm are very shortlived,that is,approximately 166 fs.Not only a stepwise three-body dissociation pathway but also a concerted three-body dissociation pathway is observed. 展开更多
关键词 PHOTODISSOCIATION thionyl chloride THREE-BODY TIME-RESOLVED STUDY
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CHEMOSELECTIVE PREPARATION OF CHLOROSULFONYL-CONTAINING AZO-DYES WITH THIONYL CHLORIDE-N,N-DIMETHYLFORMAMIDE
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作者 汤立军 张淑芬 +2 位作者 崔志华 杨锦宗 高文涛 《化工学报》 EI CAS CSCD 北大核心 2004年第1期168-170,共3页
关键词 含磺酰氯基偶氮染料 化学合成 选择性合成 简便方法 吡唑啉酮
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Chlorine Atom Transfer of Unactivated Alkyl Chlorides Enabled by Zirconocene and Photoredox Catalysis 被引量:1
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作者 Toshimasa Okita Kazuhiro Aida +2 位作者 Keisuke Tanaka Eisuke Ota Junichiro Yamaguchi 《Precision Chemistry》 2023年第2期112-118,共7页
Alkyl chlorides are robust precursors to carbon radicals;however,their relative inertness has hampered their practical use.Although modern photochemical strategies have greatly enhanced the utility of alkyl chlorides ... Alkyl chlorides are robust precursors to carbon radicals;however,their relative inertness has hampered their practical use.Although modern photochemical strategies have greatly enhanced the utility of alkyl chlorides as radical precursors,these methods often depend on strongly reducing conditions leading to unproductive side reactions.Here,we report a catalytic radical generation from 1°,2°,and 3°unactivated alkyl chlorides with zirconocene and photoredox catalysis,which enables both hydrogenation and borylation on a range of structurally complex molecules.This mild zirconocene-catalyzed protocol shows that zirconium can render the C−Cl bond cleavage more exergonic and can lower the activation energy of the transition state,amplifying the ability of metallocenes toward halogen atom transfer. 展开更多
关键词 ZIRCONOCENE Alkyl chloride Halogen atom transfer BORYLATION Photoredox catalysis
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One-step preparation of efficient cuprous chloride catalyst for direct synthesis of trimethoxysilane
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作者 Jiaxin Zhang Lu Wang +5 位作者 Zhiqiang Ma Chuanjun Di Guanghui Chen Jipeng Dong Jianlong Li Fei Gao 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第7期161-171,共11页
CuCl-based catalysts are the most commonly used catalysts for the“direct synthesis”of trimethoxysilane(M3).CuCl species are sensitive to air and water,and are prone to oxidation deactivation.When CuCl is directly us... CuCl-based catalysts are the most commonly used catalysts for the“direct synthesis”of trimethoxysilane(M3).CuCl species are sensitive to air and water,and are prone to oxidation deactivation.When CuCl is directly used as a catalyst,it needs to be purified before the utilization,and the operating conditions for the catalyst preparation are relatively harsh,requiring the inert gas environment.Considering a high-temperature activation step required for CuCl-based catalysts used for catalyzing synthesis of M3 to form active phase Cu–Si alloys(Cu_(x)Si)with Si powder,in this work,a series of catalysts for the“direct synthesis”of M3 were obtained by a one-step high-temperature activation of the mixture of stable CuCl_(2) precursors,activated carbon-reducing agent,and Si powder,simultaneously achieving the reduction of CuCl_(2) to CuCl and the formation of active phase Cu_(x)Si alloys of CuCl with Si powder.The prepared samples were characterized through various characterization techniques,and investigated for the catalytic performance for the“direct synthesis”of M3.Moreover,the operation conditions were optimized,including the activation temperature,catalyst dosage,Si powder particle size,and reaction temperature.The characterization results indicate that during the one-step activation process,the CuCl_(2) precursor is reduced to CuCl,and the resulting CuCl simultaneously reacts with Si powder to form active phases Cu3Si and Cu15Si4 alloys.The optimal catalyst Sacm(250,0.8:10)exhibits a good catalytic activity with selectivity of 95%and yield of 77%for M3,and shows a good universality for various alcohol substrates.Furthermore,the catalytic mechanism of the prepared catalyst for the“direct synthesis”of M3 was discussed. 展开更多
关键词 TRIMETHOXYSILANE Cuprous chloride catalysis Catalyst activation Reduction Active phase formation
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Redox-triggered hydroarylation of o-(hydroxyalkyl)arylalkynes with arylsulfonyl chlorides using visible light catalysis
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作者 Renjie Song Jiadong Xia +1 位作者 Jiangxi Yu Jinheng Li 《Science China Chemistry》 SCIE EI CAS CSCD 2016年第2期184-189,共6页
A new radical-mediated method for the synthesis of 1-(2-(1,2-diarylvinyl)phenyl)ethan-1-ones by the redox hydroarylation of o-(hydroxyalkyl)arylalkynes with arylsulfonyl chlorides is described. This visible light cata... A new radical-mediated method for the synthesis of 1-(2-(1,2-diarylvinyl)phenyl)ethan-1-ones by the redox hydroarylation of o-(hydroxyalkyl)arylalkynes with arylsulfonyl chlorides is described. This visible light catalysis method proceeds via a sequence of the radical addition of aryl group across the C?C triple bond, protonation and redox reaction, and represents a new redox transformation reaction directed by a neighboring hydroxyl group. 展开更多
关键词 HYDROARYLATION redox visible light catalysis ALKYNES arylsulfonyl chlorides
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碳负载Cs和Cu基催化剂用于1,1,2-三氯乙烷的气相脱氯化氢
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作者 盖星宇 岳玉学 +5 位作者 杨春华 张子龙 蔡天姿 张海丰 王柏林 李小年 《化工学报》 EI CSCD 北大核心 2024年第2期575-583,共9页
采用浸渍法制备了Cs/AC和Cu/AC催化剂,并在1,1,2-三氯乙烷的气相脱氯化氢反应中进行了评价。在浸渍过程中,活性炭表面产生高度分散的Cs物种和少量结晶的Cu物种。Cs/AC催化剂具有优异的催化性能,在573 K、1000 h^(−1)的反应条件下,转化... 采用浸渍法制备了Cs/AC和Cu/AC催化剂,并在1,1,2-三氯乙烷的气相脱氯化氢反应中进行了评价。在浸渍过程中,活性炭表面产生高度分散的Cs物种和少量结晶的Cu物种。Cs/AC催化剂具有优异的催化性能,在573 K、1000 h^(−1)的反应条件下,转化率稳定在86.7%。实验和理论计算表明,CsCl物种促进了1,1,2-三氯乙烷的吸附和活化,从而提高了原料转化率。这项工作为探索高效经济地合成偏二氯乙烯提供了一种很有前景的策略。 展开更多
关键词 偏二氯乙烯 活性炭 催化 1 1 2-三氯乙烷脱氯化氢 催化剂载体
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Vinyl chloride monomer production catalysed by gold: A review 被引量:7
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作者 Catherine J.Davies Peter J.Miedziak +1 位作者 Gemma L.Brett Graham J.Hutchings 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2016年第10期1600-1607,共8页
In this review we discuss the history of research into the use of gold for the acetylene hydrochlorin‐ation reaction, and describe the recent developments which have led to its commercialisation. We discuss the use o... In this review we discuss the history of research into the use of gold for the acetylene hydrochlorin‐ation reaction, and describe the recent developments which have led to its commercialisation. We discuss the use of different precursors and the addition to gold of a secondary metal as methods which attempt to improve these catalysts, and consider the nature of the active gold species. The vast majority of poly vinyl chloride (PVC) produced globally still uses a mercuric chloride as a cata‐lyst, despite the environmental problems associated with it. Due to the agreement by the Chinese government to remove mercury usage in the PVC industry over the course of the next few years there is an obvious need to find a replacement catalyst;the potential use of gold for this process has been well known for several decades and to date gold seems to be the best candidate for this, pri‐marily due to its superior selectivity when compared to other metals. 展开更多
关键词 GOLD ACETYLENE HYDROCHLORINATION Vinyl chloride monomer Poly vinyl chloride catalysis
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二氯亚砜活化的芳基肼自身偶联反应
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作者 杜剑雄 钟品勇 刘晋彪 《合成化学》 CAS 2024年第7期643-648,共6页
联芳烃作为一类重要的芳香化合物,广泛应用于医药、材料和化工等领域,发展新颖简单的Aryl—Aryl合成方法具有重要意义。本文以芳基肼盐酸盐为原料,通过筛选不同的碱、溶剂和活化剂的用量,优化了较佳的实验条件:以4-二甲氨基吡啶为促进剂... 联芳烃作为一类重要的芳香化合物,广泛应用于医药、材料和化工等领域,发展新颖简单的Aryl—Aryl合成方法具有重要意义。本文以芳基肼盐酸盐为原料,通过筛选不同的碱、溶剂和活化剂的用量,优化了较佳的实验条件:以4-二甲氨基吡啶为促进剂,乙腈为溶剂,1.5 eq的二氯亚砜为活化剂,在5 min内以24%~68%的产率合成了11个联苯衍生物,目标化合物结构经^(1)H NMR和^(13)C NMR确证。该方法具有反应条件温和,无需过渡金属催化等特点。 展开更多
关键词 芳基肼 偶联反应 二氯亚砜 4-二甲氨基吡啶 无金属催化
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Characterization and Catalytic Properties of Al-MCM-41 Mesoporous Materials Grafted with Tributyltin Chloride 被引量:1
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作者 宋伟明 刘星 +1 位作者 荆涛 邓启刚 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2012年第5期900-905,共6页
Surface organometallic chemistry (SOMC) is a recently developing research field. It is of great significance for the quantitative modification, restoration of solid surface, identification of the physical and chemical... Surface organometallic chemistry (SOMC) is a recently developing research field. It is of great significance for the quantitative modification, restoration of solid surface, identification of the physical and chemical nature of surface and the preparation of new catalyst. The production of R 3 Sn-O-MCM-41 (R 3 SnM) was obtained by heating tributyltin chloride and Al-MCM-41 mixture at 170 °C for 5 h under stirring in nitrogen atmosphere. The composition, structure and surface physical and chemical properties of the samples were characterized by inductively coupled plasma mass spectrometry (ICP-MS), 13 C, 119 Sn, 29 Si and 27 Al solid state NMR (nuclear magnetic resonance) spectra, in-situ pyridine infrared spectroscopy (Py-IR), N 2 adsorption-desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), etc. The results of ICP and organic elemental analysis shows that the grafting yield w Sn was 6.46% for R 3 SnM. H 0 (the negative logarithm of the acid concentration)and the number of acid sites for R 3 SnM respectively were 2.77-0.99 and 4.8 mmol·g-1 by the Hammett method. N 2 adsorption-desorption, XRD, TEM analysis showed that R 3 SnM with ordered hexagonal mesopore structure, resulted in the decease of surface areas and pore size as well as the increase of mesoporous volume and surface acidity, as compared to Al-MCM-41. R 3 SnM was used in the synthesis of isoamyl acetate. The yield of isoamyl acetate was 96% when n(isoamyl alcohol)︰n(acetic acid) 1.0︰1.0, 3 R SnM w 5%, 138 °C for 5 h. The catalyst can be reused and the yield of 86% can be attained when catalyst was reused five times at the same catalytic conditions. 展开更多
关键词 Al-MCM-41 molecular sieves tributyltin chloride grafting reaction CHARACTERIZATION catalysis isoa-myl acetate
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碳酸钠催化氯化胆碱/乳酸低共熔溶剂改性碱木质素及其表征 被引量:1
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作者 刘庆业 陈贤云 +3 位作者 邓华 甘卫星 黄思玉 蒙冕武 《林产化学与工业》 CAS CSCD 北大核心 2023年第1期89-96,共8页
以季铵盐氯化胆碱(ChCl)与乳酸(Lac)、尿素(U)、草酸(OA)、甲酸(FA)分别合成低共熔溶剂(DES)并对工业碱木质素(AL)进行改性,研究了由不同氢键供体与ChCl合成的DES体系、反应条件及催化剂对碱木质素改性的木质素提取率的影响。研究发现... 以季铵盐氯化胆碱(ChCl)与乳酸(Lac)、尿素(U)、草酸(OA)、甲酸(FA)分别合成低共熔溶剂(DES)并对工业碱木质素(AL)进行改性,研究了由不同氢键供体与ChCl合成的DES体系、反应条件及催化剂对碱木质素改性的木质素提取率的影响。研究发现使用氯化胆碱/乳酸低共熔溶剂(ChCl/Lac)时,木质素的提取率最高。通过单因素试验得到ChCl/Lac改性的最优条件为:在120℃时,Lac与ChCl物质的量比值(n_(Lac)/n_(ChCl))为12,DES添加量为碱木质素质量的20倍(m_(DES)/m_(AL)=20),反应时间12 h,木质素提取率达95.37%;当反应温度降低到100℃,无催化剂时,木质素提取率为40.39%,使用8%碳酸钠为催化剂时,木质素提取率提高至74.87%。采用FT-IR、^(13)C NMR、TG和DTG对木质素样品进行表征,由FT-IR、^(13)C NMR结果可得,改性中β-O-4键断裂并引入羟甲基和甲氧基,改性后木质素主要结构单元为紫丁香基结构。从TG和DTG分析得到碳酸钠催化改性后木质素放热峰向高温移动,热稳定性提高。 展开更多
关键词 低共熔溶剂 氯化胆碱/乳酸 碱木质素 改性 催化
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温和条件下ZnCl_(2)原位催化松木粉快速热裂解制生物油及生物炭应用 被引量:2
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作者 庞兆斌 王建刚 +1 位作者 崔洪友 王景华 《燃料化学学报(中英文)》 EI CAS CSCD 北大核心 2023年第9期1250-1258,共9页
生物质快速热裂解是生物质转化利用的有效途径,但常因是非催化过程,裂解温度高导致生物油成分复杂难控。本实验以ZnCl_(2)为催化剂,研究了木质素、纤维素、玉米芯和松木粉的热解过程,旨在探索原位催化对快速热裂解的强化作用。本实验通... 生物质快速热裂解是生物质转化利用的有效途径,但常因是非催化过程,裂解温度高导致生物油成分复杂难控。本实验以ZnCl_(2)为催化剂,研究了木质素、纤维素、玉米芯和松木粉的热解过程,旨在探索原位催化对快速热裂解的强化作用。本实验通过热重曲线拟合,获得了热裂解的活化能;通过快速热裂解实验,研究了催化作用下热解油组成变化。结果表明,ZnCl_(2)催化可显著降低生物质裂解温度,简化生物油组成。在350℃快速热裂解松木粉获得了47%生物油产率,主要成分是纤维素和半纤维素的衍生物。ZnCl_(2)可显著降低纤维素裂解的活化能(由304.78 kJ/mol降低至112.46 kJ/mol),而对木质素的裂解影响不大。裂解后的碳渣在600℃二次碳化可获得性能良好的活性炭,苯酚吸附容量可达165 mg/g。 展开更多
关键词 生物质 快速热裂解 原位催化 ZnCl_(2) 松木
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锂-亚硫酰氯电池的试验与性能分析
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作者 吴承东 朱小毅 +4 位作者 陈全胜 杜以康 孙宇轩 王士威 庞申然 《山东化工》 2023年第24期23-26,共4页
能源供给是海洋能源与资源开发需重点突破的核心共性关键技术。文章介绍了锂-亚硫酰氯电池的特性及优势,设计出一种电池舱来保证电池组在海底低温情况下也不会降低放电效率;同时根据哈尔伯格—佩克公式,评估出电池在高温高湿的环境下功... 能源供给是海洋能源与资源开发需重点突破的核心共性关键技术。文章介绍了锂-亚硫酰氯电池的特性及优势,设计出一种电池舱来保证电池组在海底低温情况下也不会降低放电效率;同时根据哈尔伯格—佩克公式,评估出电池在高温高湿的环境下功能和使用寿命也不会受到影响;最后利用微热量仪测试电池的自放电率,测得在常温条件下电池的年容量损失<1%。电池舱的设计保证了海洋装备供电系统的高效性与安全性,锂-亚硫酰氯电池的使用保障了海底观测的长期续航。 展开更多
关键词 海洋装备 锂-亚硫酰氯电池 电池舱 寿命 放电
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2-氯乙基乙基醚的无溶剂合成
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作者 吴小春 何勇 +2 位作者 岳志伟 毛业翔 张洪模 《精细化工》 EI CAS CSCD 北大核心 2023年第5期1143-1148,共6页
对2-氯乙基乙基醚的合成工艺进行了无溶剂合成改进。以三乙胺为催化剂,乙二醇单乙醚与二氯亚砜发生氯代反应合成了2-氯乙基乙基醚,产物经饱和碳酸钠溶液碱洗、饱和氯化钠溶液水洗、无水硫酸钠干燥,得到2-氯乙基乙基醚,采用^(1)HNMR和GC... 对2-氯乙基乙基醚的合成工艺进行了无溶剂合成改进。以三乙胺为催化剂,乙二醇单乙醚与二氯亚砜发生氯代反应合成了2-氯乙基乙基醚,产物经饱和碳酸钠溶液碱洗、饱和氯化钠溶液水洗、无水硫酸钠干燥,得到2-氯乙基乙基醚,采用^(1)HNMR和GC-MS对产物结构进行了表征。采用单因素实验考察了投料物质的量比、反应温度和反应时间对产物GC纯度和收率的影响。优化后2-氯乙基乙基醚的合成工艺为n(乙二醇单乙醚)∶n(二氯亚砜)∶n(三乙胺)=1.0∶1.3∶0.3、反应温度为70℃、反应时间为4h。在该工艺下经公斤级中试放大,产品的收率可达90.2%以上、GC纯度达到99.4%以上、含量达到99.2%以上。 展开更多
关键词 2-氯乙基乙基醚 乙二醇单乙醚 二氯亚砜 三乙胺 无溶剂合成 精细化工中间体
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GC-MS法测定磷酸苯丙哌林中潜在基因毒性杂质
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作者 董斌 徐桂连 +2 位作者 郝爱鱼 姜博海 王戈 《中国药物评价》 2023年第4期313-315,共3页
目的:建立GC-MS法测定磷酸苯丙哌林中潜在基因毒性杂质环氧丙烷和二氯亚砜。方法:采用TG-WAXMS毛细管柱,程序升温;离子源温度230℃,SIM模式;顶空进样,炉温为90℃,时间为30 min。结果:环氧丙烷在0.09~1.8μg·mL^(-1)浓度范围内线性... 目的:建立GC-MS法测定磷酸苯丙哌林中潜在基因毒性杂质环氧丙烷和二氯亚砜。方法:采用TG-WAXMS毛细管柱,程序升温;离子源温度230℃,SIM模式;顶空进样,炉温为90℃,时间为30 min。结果:环氧丙烷在0.09~1.8μg·mL^(-1)浓度范围内线性关系良好;二氯亚砜在0.0454~1.818μg·mL^(-1)浓度范围内线性关系良好;环氧丙烷和二氯亚砜回收率分别为97.6%和99.2%(n=9);重复性RSD分别为4.9%和5.0%(n=6);10批原料药中均未检出环氧丙烷和二氯亚砜。结论:本方法灵敏度高,准确度好,可用于磷酸苯丙哌林中环氧丙烷和二氯亚砜的测定。 展开更多
关键词 磷酸苯丙哌林 环氧丙烷 二氯亚砜 基因毒性杂质 气相质谱联用法
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氯化亚砜液体桶装物料输料间安全设计探讨
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作者 刘畅 《山东化工》 CAS 2023年第7期192-194,共3页
通过对生产车间内反应釜附近氯化亚砜液体桶装物料输料情况的观察,分析了存在的风险及可能造成的事故后果,提出了氯化亚砜液体桶装物料输料间的设计原则。
关键词 氯化亚砜 液体桶装物料输料间 设计原则
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十二烷基三甲基氯化铵的催化合成研究
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作者 陈松 肖建平 《中国洗涤用品工业》 CAS 2023年第7期29-34,共6页
采用高压釜反应器,以十二烷基二甲基叔胺(以下简称“12叔胺”)和一氯甲烷为原料,研究了12叔胺和一氯甲烷的最佳摩尔比。并在不同反应温度和反应时间条件下,以碳酸钠、硼氢化钠和氢氧化钠等为催化剂,对比合成十二烷基三甲基氯化铵(以下... 采用高压釜反应器,以十二烷基二甲基叔胺(以下简称“12叔胺”)和一氯甲烷为原料,研究了12叔胺和一氯甲烷的最佳摩尔比。并在不同反应温度和反应时间条件下,以碳酸钠、硼氢化钠和氢氧化钠等为催化剂,对比合成十二烷基三甲基氯化铵(以下简称“1231”)的叔胺转化率和产品色泽。得到了叔胺转化率和产品色泽与反应时间和反应温度的关系曲线。结果表明:当原料摩尔比n(一氯甲烷)︰n(12叔胺)=1.02︰1时,以碳酸钠为催化剂,反应温度为80℃,反应时间为4 h,得到产品的色泽和和叔胺转化率最佳,色泽小于20 Hazen,叔胺转化率达99.5%,游离胺相对阳离子活性物的质量分数小于0.3%。 展开更多
关键词 十二烷基三甲基氯化铵 阳离子表面活性剂 催化 合成
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乙炔、二氯乙烷无汞催化合成氯乙烯生产装置运行总结
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作者 王亮亮 兰俊兵 +2 位作者 王秋云 商福栋 艾卫东 《聚氯乙烯》 CAS 2023年第8期6-9,共4页
介绍了我国首套乙炔、二氯乙烷无汞催化合成氯乙烯生产装置开车运行情况,总结了装置运行过程中遇到的问题和相应对策。
关键词 氯乙烯 乙炔 二氯乙烷 无汞催化 水俣公约
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