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Intensified reactive extraction of 4-hydroxypyridine with di(2-ethylhexyl) phosphoric acid in 1-octanol by using tributyl phosphate
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作者 Zhixian Chang Xiangfeng Zhou +2 位作者 Huihua Bai Deliang Li Ling Zhang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第2期199-205,共7页
The efficient separation of amphoteric organic compounds from dilute solutions is of great importance in the industrial field. In the present work, the reactive extractions of 4-hydroxypyridine(4-HP) with tributyl pho... The efficient separation of amphoteric organic compounds from dilute solutions is of great importance in the industrial field. In the present work, the reactive extractions of 4-hydroxypyridine(4-HP) with tributyl phosphate(TBP), di(2-ethylhexyl) phosphoric acid(D2EHPA) and TBP + D2EHPA dissolved in 1-octanol were investigated, respectively. The influences of the initial concentrations of TBP, D2EHPA and TBP + D2EHPA on distribution ratio(D) were discussed, as well as the reactive extraction mechanism were proposed. The obvious intensification effect was observed when the mixture of TBP and D2EHPA was used as extractant. The best extraction conditions were found to be of the molar ratio of D2EHPA and TBP at 2:1 and the equilibrium aqueous pH at 3.50-4.50. D values increased with the increase of the total concentration of TBP and D2EHPA in 1-octanol. Especially, the analysis on the extraction mechanisms clearly indicate(i) TBP in 1-octanol shows negligible reactive extraction toward 4-HP,(ii) D2EHPA in 1-octanol exhibits moderate extraction effect by forming 4-HP:D2EHPA(1:1) and 4-HP:2D2EHPA(1:2) type complexes, while(iii) D2EHPA in TBP/1-octanol demonstrates the maximum distribution ratio with the 4-HP:D2EHPA(1:1) type complex domination. The discussion provides new insights on the mechanism and opens a new way for the intensified extraction of amphoteric organic compounds by using the mixture of multiple extractants in the diluent. 展开更多
关键词 4-Hydroxypyridine Di(2-ethylhexyl)phosphoric acid tributyl phosphate Reactive extraction Intensified extraction
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Adsorption mechanism of mixed salicylhydroxamic acid and tributyl phosphate collectors in fine cassiterite electro-flotation system 被引量:15
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作者 覃文庆 任浏祎 +2 位作者 徐阳宝 王佩佩 马喜红 《Journal of Central South University》 SCIE EI CAS 2012年第6期1711-1717,共7页
Two reagents including salicylhydroxamic acid(SHA) and tributyl phosphate(TBP) were tested as collectors either separately or together for electro-flotation of fine cassiterite(<10 μm).Subsequently,the flotation m... Two reagents including salicylhydroxamic acid(SHA) and tributyl phosphate(TBP) were tested as collectors either separately or together for electro-flotation of fine cassiterite(<10 μm).Subsequently,the flotation mechanism of the fine cassiterite was investigated by adsorbance determination,electrophoretic mobility measurements and Fourier transform infra-red(FT-IR) spectrum checking.Results of the flotation experiments show that with SHA as a collector,the collecting performance is remarkably impacted by the pulp pH value as the floatability of cassiterite varies sharply when the pH changes,and flotation with SHA gives distinct maximum at about pH 6.5.Additionally,the floatability of cassiterite is determined by using SHA and TBP as collectors.The range of pulp pH for good floatability is broadened in the presence of TBP as auxiliary collector,and the utilization of TBP improves the recovery of cassiterite modestly.Moreover,the optimum pH value for cassiterite flotation is associated with adsorbance.The results of FT-IR spectrum and the electrophoretic mobility measurements indicate that the adsorption interaction between the collectors and the cassiterite is dominantly a kind of chemical bonding in the form of one or two cycle chelate rings due to the coordination of carbonyl group,hydroxamate and P=O group to the metal tin atoms,where the oxygen atoms contained in carbonyl group,hydroxamate and P=O group of the polar groups have the stereo conditions to form five-membered rings.In addition,the adsorption interactions of SHA and TBP on the surfaces of cassiterite are also dominated by means of hydrogen bonds. 展开更多
关键词 fine cassiterite particle ELECTRO-FLOTATION salicylhydroxamic acid (SHA) tributyl phosphate (tbp ADSORPTION
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Solvent extraction mechanism and precipitation stripping of bismuth(Ⅲ) in hydrochloric acid medium by tributyl phosphate 被引量:2
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作者 王志坚 丁风华 +1 位作者 湛菁 张传福 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第12期3085-3091,共7页
Tributyl phosphate(TBP) was employed for the Bi(Ⅲ) extraction from hydrochloric acid medium.The effects of extraction time and material concentration were examined.The replacement mechanism between the anion(Cl^-) an... Tributyl phosphate(TBP) was employed for the Bi(Ⅲ) extraction from hydrochloric acid medium.The effects of extraction time and material concentration were examined.The replacement mechanism between the anion(Cl^-) and TBP was proposed for extraction.The results show the species extracted into the organic phase were found to be mainly BiCl_3·x TBP(x=2 or 3).Thermodynamic parameters of the extraction reaction were obtained from the thermodynamics analysis,which illustrates that higher temperatures show a negative effect on the extraction.Extraction isotherm was obtained with 2.16 mol/L TBP for a typical solution containing 0.1 mol/L of bismuth and 1.0 mol/L of hydrochloric acid.About 98.5 % of bismuth has been extracted from the leaching solution under the optimum condition.Moreover,oxalate was explored as a precipitation stripping agent for BiCl_3·x TBP(x=2 or 3) complexes,by which Bi(Ⅲ) was stripped in the form of Bi_2(C_2O_4)_3·7H_2O.A stripping efficiency of 99.3% was obtained in only one stage at the phase ratio of 1 and TBP also could be recycled.Therefore,the method is an efficient,effective and highly selective approach to extract Bi(Ⅲ) and to recover metal bismuth. 展开更多
关键词 solvent extraction bismuth (Bi) tributyl phosphate (tbp precipitation stripping extraction mechanism
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A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl_3 被引量:4
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作者 周智勇 秦炜 +1 位作者 费维扬 李以圭 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2012年第1期36-39,共4页
To study the characteristic of liquid-liquid extraction equilibrium of lithium from brine sources, the complexes formed from tributyl phosphate (TBP) and methyl isobutyl ketone (MIBK) with lithium were investi- ga... To study the characteristic of liquid-liquid extraction equilibrium of lithium from brine sources, the complexes formed from tributyl phosphate (TBP) and methyl isobutyl ketone (MIBK) with lithium were investi- gated using FeCl3 as coextracting agent. Liquid-liquid extraction reaction mechanisms were proposed and the stoichiometry of tetrachloroferrate(III) complex with lithium was obtained by regressing the experimental data. It is found that the stoichiometry of tetrachloroferrate(III) to lithium in the complex is 1 : 1 with either TBP or MIBK as extractant in kerosene. The stoichiometry of the complex of TBP with Li was 1 : 1 and that of MIBK with Li was 2 : 1. The formed complexes of TBP and MIBK with lithium are determined to be LiFeCla-TBP and LiFeC14.2MIBK, respectively, according to the rule of neutralization. 展开更多
关键词 LITHIUM extraction reaction equations formation tributyl phosphate methyl isobutyl ketone KEROSENE
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Extraction of cerium(Ⅳ) using tributyl phosphate impregnated resin from nitric acid medium 被引量:4
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作者 O.S.HELALY M.S.ABD EL-GHANY +3 位作者 M.I.MOUSTAFA A.H.ABUZAID N.M.ABD EL-MONEM I.M.ISMAIL 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第1期206-214,共9页
Tributyl phosphate (TBP) solvent was used for impregnation into Amberlite XAD-16 nonionic polymeric resin beads using the wet method to prepare solvent impregnated resin (SIR). Undiluted TBP in a ratio to the resi... Tributyl phosphate (TBP) solvent was used for impregnation into Amberlite XAD-16 nonionic polymeric resin beads using the wet method to prepare solvent impregnated resin (SIR). Undiluted TBP in a ratio to the resin support (volume to mass) of 6.0 at room temperature (RT) in 24 h was impregnated the resin with a mass ratio of 1.944, while the prepared gross sample of SIR at the ratio of solvent to resin of 3.0 was impregnated with a mass ratio of 1.88. Cerium(Ⅳ) oxide concentrate, prepared from crude Egyptian monazite sand, containing 37% cerium, 1.6% thorium and about 40% the other trivalent rare earth oxides, was used to prepare cerium(Ⅳ) nitrate solution for extraction using the prepared SIR. The impregnated resin was satisfactory for Ce(Ⅳ) extraction from nitric acid medium at room temperature. Cerium loading capacity of the impregnated resin reached 95.6% of the calculated theoretical capacity (173 g/kg (Ce/SIR)) under the conditions of 51.57 g/L cerium and 2.48 g/L thorium, 5.0 mol/L free nitric acid, solution to resin ratio of 10.0 and contacting the phases for 5.0 min. The loading capacity reached 98.75% when cerium concentration was increased to 91.43 g/L under the same conditions. 展开更多
关键词 cerium (Ⅳ) crude monazite sand tributyl phosphate impregnated resin EXTRACTION nitric acid medium
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Ion-pair induced solvent extraction of lithium(Ⅰ)from acidic chloride solutions with tributyl phosphate
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作者 Li Cui Lijuan Wang +3 位作者 Ming Feng Li Fang Yanxia Guo Fangqin Cheng 《Green Energy & Environment》 SCIE CSCD 2021年第4期607-616,共10页
Lithium(Li)is an important energy metal in the 21st century.However,the selective recovery of Li is still a big challenge,especially from acidic solutions with multiple metal ions existence.Herein we report a new ion ... Lithium(Li)is an important energy metal in the 21st century.However,the selective recovery of Li is still a big challenge,especially from acidic solutions with multiple metal ions existence.Herein we report a new ion pair induced mechanism for selectively extracting Li^(+)from acidic chloride solutions by tributyl phosphate(TBP).It is shown that the acidity and the chloride ions in the aqueous phase have great effects on the extraction of Li^(+).The FT-IR,UV-Vis and ESI-MS experiments provide solid evidence for the formation of ion-pair complex[Li(TBP)_n(H_(2)O)_(m)]^(+)[FeCl_(4)]^(-)(n-1,2,3;m-0,1)in the organic phase,which brings about the effective and efficient extraction of Li^(+).This mechanism can overcome the Hofmeister bias and allow for the selective extraction of Li^(+) from the extremely hydrophilic chlorides.It has also been proved that the loaded Li in TBP can be effectively stripped by concentrated HCl solution with a Li/Fe separation factor>500.The understanding of the ion-pair transport mechanism is helpful for optimizing the recovery process or further advancing more efficient recovery techniques for Li from acidic liquor. 展开更多
关键词 LITHIUM ION-PAIR tributyl phosphate Acidic chloride solution
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废TBP煤油悬浮液配方试验研究
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作者 王珂 张敬辉 +2 位作者 刘铁军 李明富 杨翠玲 《广东化工》 CAS 2024年第10期43-46,共4页
直接焚烧核燃料后处理过程中产生的磷酸三丁酯(TBP)和煤油(OK)有机废液产生的磷酸会对设备造成腐蚀,在采用热解焚烧工艺处理该废液时,需掺入合适比例的中和剂和表面活性剂等添加剂,将废液配制成均匀稳定的悬浮液。中和剂在热解过程中可... 直接焚烧核燃料后处理过程中产生的磷酸三丁酯(TBP)和煤油(OK)有机废液产生的磷酸会对设备造成腐蚀,在采用热解焚烧工艺处理该废液时,需掺入合适比例的中和剂和表面活性剂等添加剂,将废液配制成均匀稳定的悬浮液。中和剂在热解过程中可以固定五氧化二磷,避免磷酸生成腐蚀设备。本文通过不同单因素实验研究各原料的掺量以及搅拌速率对悬浮液性能的影响,优化后处理厂热解焚烧供料系统的悬浮液配方。试验结果显示:当TBP的体积含量为30%~60%时,所制备的悬浮液性能较好,可作为悬浮液配制的基础方案,而当TBP的体积含量大于80%时,制备的悬浮液稳定性变差,乳液相破乳并发生沉降,悬浮液整体性能不佳。当TBP体积含量分别为30%和60%时,在钙磷比为1.25~1.75,乳化剂含量为1%~2%,含水量为8%~12%,DBP含量分别不超过0.26%和0.6%的条件下,所制备的悬浮液成乳情况和流动性较好,粘度和稳定时间满足要求,产生的二次废物少,悬浮液可以应用于TBP/OK有机废液热解焚烧处理工程中。 展开更多
关键词 磷酸三丁酯(TPB) 热解焚烧 悬浮液
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Determination of Di-n-Butyl Phosphate in Organic Streams of FBTR Mixed Carbide Fuel Reprocessing Solution by Gas Chromatographic Technique
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作者 P. Velavendan S. Ganesh +2 位作者 N.K. Pandey U. Kamachi Mudali R. Natarajan 《Journal of Analytical Sciences, Methods and Instrumentation》 2011年第2期31-35,共5页
The present work describes the amount of Di-n- butyl phosphate (DBP) produced when PUREX solvent (30%tri-n-butyl phosphate (TBP) mixed with 70% hydrocarbon diluent) is exposed to intensive radiolytic and chemical at- ... The present work describes the amount of Di-n- butyl phosphate (DBP) produced when PUREX solvent (30%tri-n-butyl phosphate (TBP) mixed with 70% hydrocarbon diluent) is exposed to intensive radiolytic and chemical at- tack during the separation of uranium and plutonium from fission products of FBTR mixed carbide fuel reprocessing solution. DBP is the major degradation product of Tri-n-butyl phosphate (TBP). Amount of DBP formed in the lean organic streams of different fuel burn-up FBTR carbide fuel reprocessing solutions were analyzed by Gas Chromatographic technique. The method is based on the preparation of diazo methane and conversion of non-volatile Di-n-butyl phosphate in to volatile and stable derivatives by the action of diazomethane and then determined by Gas Chromatography (GC). A calibration graph was made for DBP over a concentration in the range from 200 to 1800 ppm with correlation coefficient of 0.99587 and RSD 1.2%. The degraded 30% TBP-NPH solvent loaded with heavy metal ions like uranium was analyzed after repeated use and results are compared with standard ion chromatographic technique. A column comparison study to select of proper gas chromatographic column for the separation of DBP from other components in a single aliquot of injection is also examined. 展开更多
关键词 Gas Chromatography Flame Ionization Detector Diazomethane Di-n-butyl phosphate PUREX Process Degradation of tbp Lean ORGANIC STREAMS CARBIDE Fuel
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悬滴微萃取-高分辨连续光源石墨炉原子吸收光谱法测定高纯石墨中的超痕量金
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作者 肖芳 张田园 +3 位作者 张丽萍 刘璐 毛香菊 倪文山 《岩矿测试》 CAS CSCD 北大核心 2024年第5期734-743,共10页
准确测定高纯石墨中的超痕量金,难点是如何在最大程度地减少样品前处理过程中器皿、试剂、材料、环境及设备所引入的二次污染的前提下,实现对样品溶液中超痕量金(0.1~1ng/mL)的有效分离和高倍富集。本文建立了铂皿中灰化、酸解、磷酸三... 准确测定高纯石墨中的超痕量金,难点是如何在最大程度地减少样品前处理过程中器皿、试剂、材料、环境及设备所引入的二次污染的前提下,实现对样品溶液中超痕量金(0.1~1ng/mL)的有效分离和高倍富集。本文建立了铂皿中灰化、酸解、磷酸三丁酯悬滴微萃取的方法用于高纯石墨中超痕量金分析。首先于铂皿中高温灼烧除去样品中的固定碳,然后采用氢氟酸-王水-高氯酸将灰分消解完全制备成样品溶液,再以微升级磷酸三丁酯悬滴作为萃取剂,分离富集样品溶液中的金,最后采用高分辨连续光源石墨炉原子吸收光谱法(GFAAS)对悬滴中的金进行测定。实验结果表明,使用2.5μL磷酸三丁酯悬滴(氯仿体积为20%)作为萃取剂,在10%盐酸介质的样品溶液中萃取金2min,对金的富集倍数可达283倍。在实验条件下,金的质量浓度在0.1~2.0ng/mL范围内与其吸光度呈良好的线性关系,相关系数r为0.999,检出限为0.11ng/g,样品溶液中一定量的共存元素(如钠、镁、铝)对金的测定无干扰。按照实验方法测定5个高纯石墨实际样品中的金含量,测定结果的相对标准偏差(RSD,n=6)为1.5%~4.9%,加标回收率为94.9%~105.3%。 展开更多
关键词 高纯石墨 悬滴微萃取 磷酸三丁酯 石墨炉原子吸收光谱法 超痕量
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磷酸三丁酯(TBP)对苯酚的络合萃取 被引量:55
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作者 杨义燕 杨天雪 戴猷元 《环境化学》 CAS CSCD 北大核心 1995年第5期410-415,共6页
基于可逆络合反应的萃取分离方法对极性有机物稀溶液具有高效性和高选择性.本文系统进行了磷酸三丁酯(TBP)对苯酚稀溶液的络合萃取的实验研.负载有机相的红外谱图分析表明,TBP与苯酚通过氢键缔合形成萃合物.以TBP-煤油为萃取剂对工业含... 基于可逆络合反应的萃取分离方法对极性有机物稀溶液具有高效性和高选择性.本文系统进行了磷酸三丁酯(TBP)对苯酚稀溶液的络合萃取的实验研.负载有机相的红外谱图分析表明,TBP与苯酚通过氢键缔合形成萃合物.以TBP-煤油为萃取剂对工业含酚废水进行了萃取平衡和错流萃取实验.讨论了其应用的可能性及开发新的有效的络合萃取剂的途径. 展开更多
关键词 络合萃取 磷酸三丁酯 苯酚 废水处理
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用CTAB/TBP体系从碱性氰化液中萃取低浓度Au(I) 被引量:5
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作者 杨项军 陈景 +3 位作者 韦群燕 吴瑾光 李楷中 李奇伟 《中国有色金属学报》 EI CAS CSCD 北大核心 2004年第11期1958-1962,共5页
以TBP为萃取剂,用新型的柱状萃取装置对水相中加入与Au(I)等摩尔CTAB(十六烷基三甲基溴化铵)的低浓度氰化金溶液进行了萃取研究,考察了水相中添加CTAB、有机相TBP的体积、盐析剂NaCl浓度等对TBP萃取Au(I)性能的影响以及载金有机相中金... 以TBP为萃取剂,用新型的柱状萃取装置对水相中加入与Au(I)等摩尔CTAB(十六烷基三甲基溴化铵)的低浓度氰化金溶液进行了萃取研究,考察了水相中添加CTAB、有机相TBP的体积、盐析剂NaCl浓度等对TBP萃取Au(I)性能的影响以及载金有机相中金的反萃取。结果表明:在水相中添加CTAB后,TBP对低浓度金的萃取性能大幅度提高;50L含金浓度约为10mg/L的氰化金溶液经3级萃取试验后,金的萃取率大于95%,萃余相浓度小于0.5×10-6。用硫氰化钾对含金浓度约为3g/L的载金有机相进行了反萃取研究,当KSCN浓度大于3mol/L时,对金的反萃率大于93%。 展开更多
关键词 萃取柱 KAu(CN)2 十六烷基三甲基溴化铵 磷酸三丁脂 硫氰化钾
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用N_(235)-TBP混合体系从硫酸盐溶液中协同萃取除铁 被引量:37
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作者 刘铭 周雍茂 《中国有色金属学报》 EI CAS CSCD 北大核心 2005年第10期1648-1654,共7页
研究了采用N235-TBP协同萃取体系从硫酸盐溶液中萃取除铁,考察了萃取体系、N235浓度和料液初始pH值对Fe(Ⅲ)萃取的影响以及相比(Vorg/Vaq)、H2SO4浓度和平衡pH值对Fe(Ⅲ)反萃的影响。结果表明:N235和TBP对硫酸盐溶液中的Fe(Ⅲ)具有协同... 研究了采用N235-TBP协同萃取体系从硫酸盐溶液中萃取除铁,考察了萃取体系、N235浓度和料液初始pH值对Fe(Ⅲ)萃取的影响以及相比(Vorg/Vaq)、H2SO4浓度和平衡pH值对Fe(Ⅲ)反萃的影响。结果表明:N235和TBP对硫酸盐溶液中的Fe(Ⅲ)具有协同萃取效应;加入TBP能有效地抑制载铁有机相的分层,提高Fe(Ⅲ)的反萃率;料液初始pH值及N235浓度对Fe(Ⅲ)的萃取率影响显著,萃铁曲线的最高点随着N235浓度的增大向低pH值方向移动;以含30%N235和10%TBP(体积分数)的有机相作萃取剂,在相比(Vorg/Vaq)为2∶1的条件下,含铁12.73 g/L的合成料液经过3级错流萃取,萃余液中含铁低于0.15 g/L,铁的总萃取率接近99%;以0.4 mol/L的H2SO4为反萃剂,控制反萃液平衡pH小于0.8,铁的单级反萃率大于96%;含铁7.05 g/L的有机相在相比为1∶1时,经过2级错流反萃,铁基本上被反萃完全,贫有机相不经处理可以循环使用。 展开更多
关键词 硫酸盐溶液 协同萃取 反萃 除铁 N235 tbp
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采用磷酸三丁酯(TBP)从含锌烟尘氯化浸出液中萃取锌 被引量:3
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作者 崔涛 徐庆鑫 +2 位作者 袁野 彭建蓉 和晓才 《矿冶》 CAS 2019年第5期65-68,102,共5页
采用磷酸三丁酯萃取剂从含锌烟尘氯化浸出液中萃取锌,研究了工艺参数对锌萃取率的影响,确定了最佳的萃取条件。结果表明,采用磷酸三丁酯(TBP)能够从含锌烟尘氯化浸出液中有效萃取锌,在相比O/A3/1、萃取时间3min、TBP体积分数为60%、水... 采用磷酸三丁酯萃取剂从含锌烟尘氯化浸出液中萃取锌,研究了工艺参数对锌萃取率的影响,确定了最佳的萃取条件。结果表明,采用磷酸三丁酯(TBP)能够从含锌烟尘氯化浸出液中有效萃取锌,在相比O/A3/1、萃取时间3min、TBP体积分数为60%、水相锌离子浓度41.07g/L、水相氯离子浓度122g/L、温度15℃时进行萃取,锌的萃取率能够达到70.43%。萃余液中有白色硫酸钙沉淀生成,且硫酸钙晶须结晶程度较高。 展开更多
关键词 含锌烟尘 磷酸三丁酯 萃取 硫酸钙晶须
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TRPO-TBP/煤油体系对高放废液中镅、铀、钚和锝等的萃取和反萃 被引量:2
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作者 韩宾兵 吴秋林 朱永 《辐射防护》 CAS CSCD 北大核心 2001年第2期93-97,共5页
比较研究了混合三烷基氧膦 ( TRPO) -磷酸三丁酯 ( TBP) /煤油混合体系和 TRPO/煤油体系对铀和硝酸的萃取容量 ,结果表明 ,混合体系的萃取容量比 TRPO/煤油体系高。测定了 2 0 % TRPO- 2 0 %TBP/煤油混合体系对二十余种离子的萃取分配... 比较研究了混合三烷基氧膦 ( TRPO) -磷酸三丁酯 ( TBP) /煤油混合体系和 TRPO/煤油体系对铀和硝酸的萃取容量 ,结果表明 ,混合体系的萃取容量比 TRPO/煤油体系高。测定了 2 0 % TRPO- 2 0 %TBP/煤油混合体系对二十余种离子的萃取分配比 ,结果表明在较宽的 HNO3浓度范围 ( 0 .5~ 5mol/L)内 ,该混合体系对低浓度 UO2 2 +、低浓度 U4 +、Pu4 +、Pu3+、Np O2 2 +、Np4 +都有较高的萃取能力 ;低酸条件( <1.0 mol/L)下 ,混合体系对 Tc O4 -、Am3+、Eu3+、Y3+有较高的分配比 ;混合体系对 Np O2 +、Sr2 +、Cs+等的萃取能力较弱。TRPO- TBP/煤油有机相中萃取的镅、铀、钚和锝可以分别用高浓度硝酸、碳酸铵溶液、羟基乙酸和高浓度硝酸 (或碳酸盐 )反萃下来。 展开更多
关键词 TRPO tbp 煤油 萃取 反萃 高放废液处理 萃取容量 放射性核素
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镧系元素的固-液萃取分离研究——TBP-NH_4SCN-石蜡体系 被引量:1
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作者 王碧 高锦章 +3 位作者 范海燕 郭效军 杨武 康敬万 《稀土》 EI CAS CSCD 北大核心 1999年第4期16-20,共5页
本文以切片石蜡为溶剂,TBP为萃取剂,研究了NH4SCN-HNO3介质中镧系元素的萃取行为。考察了TBP、NH4SCN浓度、温度对萃取分离的影响。
关键词 固液萃取 萃取 镧系元素 磷酸三丁酯
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硅胶-TBP萃取层析连续分离与测定微量钼、锡 被引量:2
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作者 李焕然 容庆新 李俊兴 《分析化学》 SCIE EI CAS CSCD 北大核心 1990年第1期53-56,共4页
本文研究在抗坏血酸存在下的3mol/L盐酸介质作移动相,以硅烷化硅胶负载的磷酸三丁酯(TBP)作固定相,反相萃取层析使微量Mo、Sn与W、Ti、Ge、Zr、Nb、Ta、Gr、V、Fe、AI、Bi和Sb等分离,吸附在柱上的Mo和Sn分别用0.5mol/L盐酸和0.05mol/L... 本文研究在抗坏血酸存在下的3mol/L盐酸介质作移动相,以硅烷化硅胶负载的磷酸三丁酯(TBP)作固定相,反相萃取层析使微量Mo、Sn与W、Ti、Ge、Zr、Nb、Ta、Gr、V、Fe、AI、Bi和Sb等分离,吸附在柱上的Mo和Sn分别用0.5mol/L盐酸和0.05mol/L硫酸洗脱进行连续分离与测定。可应用于含W、Ti等合金钢中微量Mo、Sn的测定。 展开更多
关键词 萃取分析 磷酸三丁酯 合金钢
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高盐含酚工业废水的脱酚工艺研究与优化
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作者 张潆心 蒋文伟 +2 位作者 焦高成 彭小双 曾鸿锟 《现代化工》 CAS CSCD 北大核心 2024年第S01期201-206,212,共7页
研究了磷酸三丁酯(TBP)-煤油体系在对硝基苯酚(PNP)工业废水中的萃取工艺,TBP与PNP主要形成1∶1型的络合物,萃取过程的ΔH=-28.21 kJ/mol,废水中盐的存在对络合萃取有正向影响。采用单因素实验法考察了萃取剂浓度、搅拌转速、有机相/水... 研究了磷酸三丁酯(TBP)-煤油体系在对硝基苯酚(PNP)工业废水中的萃取工艺,TBP与PNP主要形成1∶1型的络合物,萃取过程的ΔH=-28.21 kJ/mol,废水中盐的存在对络合萃取有正向影响。采用单因素实验法考察了萃取剂浓度、搅拌转速、有机相/水相的体积比(O/A)对脱酚率以及化学需氧量(COD)去除率的影响。根据单因素实验结果,设计三因素三水平Box-Behnken模型进行响应面优化实验。实验结果表明,响应面优化后的最优工艺条件为:TBP浓度为28%,搅拌转速为187 r/min,相比为0.6,该条件下脱酚率为99.97%,单级萃取后萃余水相酚含量为0.12 mg/L。 展开更多
关键词 磷酸三丁酯 对硝基苯酚 响应面 含酚废水
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3-庚酮+乙酸乙酯、3-庚酮+乙酸丁酯、3-庚酮+TBP、MIBK+TBP二元体系的过量摩尔体积和黏度 被引量:2
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作者 杨得岭 林晓 +2 位作者 曹宏斌 李以圭 张懿 《化工学报》 EI CAS CSCD 北大核心 2012年第8期2327-2340,共14页
常压下测定了3-庚酮+乙酸乙酯、3-庚酮+乙酸丁酯、3-庚酮+磷酸三丁酯(TBP)、4-甲基-2-戊酮(MI-BK)+磷酸三丁酯4个二元体系在293.15~318.15K下的密度和黏度值,计算了二元体系的过量摩尔体积VE和过量黏度Δη,并用Redlich-Kister方程对V... 常压下测定了3-庚酮+乙酸乙酯、3-庚酮+乙酸丁酯、3-庚酮+磷酸三丁酯(TBP)、4-甲基-2-戊酮(MI-BK)+磷酸三丁酯4个二元体系在293.15~318.15K下的密度和黏度值,计算了二元体系的过量摩尔体积VE和过量黏度Δη,并用Redlich-Kister方程对VE和Δη进行了关联。混合溶剂的黏度数据采用Orrick-Erbar(O-E)基团贡献法进行了关联和预测,增加了O-E方法中的(—O)3—PO基团贡献值。结果表明,O-E方法可根据现有的纯溶剂的黏度数据预测得到混合溶剂的黏度,平均误差小于15%。 展开更多
关键词 3-庚酮 磷酸三丁酯 4-甲基-2-戊酮 乙酸乙酯 乙酸丁酯 密度 黏度 Orrick-Erbar(O-E)基团贡献法
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TBP配合萃取苯酚羟化液过程 被引量:1
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作者 冯惠生 陈毅烈 何丽娟 《化学工业与工程》 CAS 2007年第6期517-520,共4页
采用磷酸三丁酯(TBP)为配合剂,甲基异丁基甲酮(MIBK)为稀释剂研究了苯酚羟化液萃取过程。测定了相平衡曲线,平衡分配系数和萃取率,用双曲线对数法分析了萃合物组成。试验表明,采用TBP配合萃取苯酚羟化液,萃取率可达到99.76%,明显优于物... 采用磷酸三丁酯(TBP)为配合剂,甲基异丁基甲酮(MIBK)为稀释剂研究了苯酚羟化液萃取过程。测定了相平衡曲线,平衡分配系数和萃取率,用双曲线对数法分析了萃合物组成。试验表明,采用TBP配合萃取苯酚羟化液,萃取率可达到99.76%,明显优于物理萃取。 展开更多
关键词 配合萃取 羟化液 磷酸三丁酯(tbp)
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氯化物体系中微量金的协同萃取分离研究
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作者 朱山 卢杨潇 +1 位作者 胡久刚 张谌虎 《湿法冶金》 CAS 北大核心 2024年第1期60-66,共7页
研究了用DIBK(二异丁基酮,HA)和TBP(磷酸三丁酯,B)协同萃取体系分离和富集氯化物体系中的金,考察了萃取体系及组成、萃取时间和温度、水相中氯离子浓度、萃取相比(V_(O)/V_(A))对金萃取分离性能的影响,并采用斜率法初步探究萃取机制。... 研究了用DIBK(二异丁基酮,HA)和TBP(磷酸三丁酯,B)协同萃取体系分离和富集氯化物体系中的金,考察了萃取体系及组成、萃取时间和温度、水相中氯离子浓度、萃取相比(V_(O)/V_(A))对金萃取分离性能的影响,并采用斜率法初步探究萃取机制。结果表明:在协同萃取体系为TBP-DIBK、萃取剂总浓度1.5 mol/L、n(TBP)∶n(DIBK)=1∶4、萃取时间20 min、萃取温度20℃、V_(O)/V_(A)=2/1、水相中氯离子浓度6 mol/L条件下,金萃取率可达98.82%,最大金/铜萃取分离系数为1189.05;斜率法研究表明,萃合物组成可能为[AuCl_(6)·3A·B],其萃取化学反应式可改写为Au^(3+)+6Cl^(-)+3HA+B→[AuCl_(6)·3A·B]+3H^(+)。 展开更多
关键词 酸性溶液 二异丁基酮 磷酸三丁酯 协同萃取 微量贵金属
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