全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
化工学报  2015 

[(C2H5)3NH]Cl/ZnCl2离子液体催化合成维生素E

DOI: 10.11949/j.issn.0438-1157.20141011, PP. 126-131

Keywords: Lewis酸,离子液体,维生素E,合成,催化剂

Full-Text   Cite this paper   Add to My Lib

Abstract:

维生素E合成过程中催化剂用量大、损失严重且不能循环使用,后处理过程产生大量废液导致严重的环境问题。实验合成了几种Lewis酸性离子液体,并应用于维生素E合成。研究发现,[(C2H5)3NH]Cl/ZnCl2离子液体催化合成维生素E效果最好,该离子液体中无机阴离子起主要催化作用,季铵阳离子易与异植物醇的羟基形成氢键,能使异植物醇与主环发生定向缩合反应。采用FT-IR研究了[(C2H5)3NH]Cl/ZnCl2离子液体结构和酸性,并系统考察了其对维生素E合成的影响。随着ZnCl2摩尔分数增加,离子液体的Lewis酸性增强。在ZnCl2摩尔分数为0.66的[(C2H5)3NH]Cl/ZnCl2离子液体催化作用下,维生素E的产率可达到87.4%,该离子液体重复使用5次,催化性能没有明显下降。

References

[1]  Huang Xiangui (黄贤贵), Li Tao (李涛), Jin Ronghua (金荣华), Tian Weisheng (田伟生). Asymmetric synthesis of vitamin E [J]. Chinese Journal of Organic Chemistry (有机化学), 2006, 26 (10): 1353-1361
[2]  Wang Shaoning, Werner Bonrath, Horst Pauling, Frank Kienzle. The synthesis of d,l-α-tocopherol in supercritical media [J]. Journal of Supercritical Fluids, 2000, 17 (2): 135-143
[3]  Coman S M, Wuttke S, Vimont A, Daturi M, Kemnitz E. Catalytic performance of nanoscopic, aluminium trifluoride-based catalysts in the synthesis of (all-rac)-α-tocopherol [J]. Advanced Synthesis & Catalysis, 2008, 350 (16): 2517-2524
[4]  Qian Dong, Cui Jia, Tan Yanzhi, Wang Kaiyi. Synthesis of d,l-α-tocopherol catalyzed by heteropoly acids [J]. Chinese Chemical Letters, 1999, 10 (6): 443-444
[5]  Frank Schager, Werner Bonrath. Synthesis of d,l-α-tocopherol using strong solid acids as catalysts [J]. Journal of Catalysis, 1999, 182: 282-284
[6]  Wang Hai, Xu Boqing. Catalytic performance of Nafion/SiO2 nanocomposites for the synthesis of α-tocopherol [J]. Applied Catalysis A: General, 2004, 275: 247-255
[7]  Xing Huabin, Wang Tao, Dai Youyuan. Continuous synthesis of d,l-α-tocopherol catalyzed by sulfonic acid-functionalized ionic liquid in supercritical carbon dioxide [J]. The Journal of Supercritical Fluids, 2009, 49 (1): 52-58
[8]  Du Jun (杜军), Ke Gaili (柯改利), Liu Zuohua (刘作华), Liu Renlong (刘仁龙), Tao Changyuan (陶长元). Effects of ionic liquid and/or catalysts on product distribution of methyl cellulose pyrolysis by microwave [J]. CIESC Journal (化工学报), 2012, 63 (4): 1083-1088
[9]  Du Jun, Shi Jing, Li Zhengfei, Liu Zuohua. Ionic liquid mediated CO2 activation for DMC synthesis [J]. Journal of Natural Gas Chemistry, 2012, 21: 476-479
[10]  Guo Jintang (郭锦棠), Zhu Chengcai (朱成才), Tian Jing (田晶), Zhang Hongxin (张鸿信). Application of novel ionic liquid in copolymerization of carbon monoxide and styrene [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2008, 59 (2): 497-502
[11]  Zhang Lipeng (张丽鹏), Yu Xianjin (于先进), Zhao Zengdian (赵增典), Dong Yunhui (董云会), Wang Xiaoming (王晓铭), Zhang Dechao (张德超). Synthesis of [EMIM]Br-AlCl3 ionic liquid [J]. CIESC Journal (化工学报), 2011, 62 (S2): 173-178
[12]  Qiao Kun, Deng Youquan. Alkylations of benzene in room temperature ionic liquids modified with HCl [J]. Journal of Molecular Catalysis A, 2001, 171 (1/2): 81-84
[13]  Hao Suxia (郝苏霞), Wang Guirong (王桂荣), Luan Yanqin (栾艳勤), Zhao Xinqiang (赵新强), Wang Yanji (王延吉). Progress in the application of ionic liquids for Friedel-Crafts reactions [J]. Chemical Industry and Engineering Progress (化工进展), 2009, 28 (6): 953-957
[14]  Zhao Dishun (赵地顺), Ge Jingjing (葛京京), Zhai Jianhua (翟建华). Synthesis of succinic acid diisopropyl ester catalyzed by Lewis acid ionic liquids [J]. CIESC Journal (化工学报), 2014, 65 (2): 561-569
[15]  Wang Xiaolei (王晓磊), Han Jinyu (韩金玉), Wang Hua (王华). Preparation of lactide using ionic liquid catalyst [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2007, 58 (12): 3082-3085
[16]  National Pharmacopoeia Committee (国家药典委员会). Pharmacopoeia of the People's Republic of China (中华人民共和国药典) [M]. Part 2. Beijing: Chinese Medical Science and Technology Press, 2010: 907-908
[17]  Fan Mingming (范明明), Wang Hui (王辉), Zhang Pingbo (张萍波), Ni Bangqing (倪邦庆). Synthesis, characterization and catalysis performance of ionic liquid 1-butyl-3-methylimidazolium chlorozincate [J]. Chinese Journal of Inorganic Chemistry (无机化学学报), 2012, 27 (7): 1333-1337
[18]  Wang Xiaohua (王晓化), Tao Guohong (陶国宏), Wu Xiaomu (吴晓牧), Kou Yuan (寇元). Investigate of the acidity of ionic liquids by IR spectroscopy [J]. Acta Physico-Chimica Sinica (物理化学学报), 2005, 21 (5): 528-633
[19]  Yang Yali, Kou Yuan. Determination of the Lewis acidity of ionic liquids by means of an IR spectroscopic probe [J]. Chemical Communications, 2004 (2): 226-227
[20]  Bulychev E Yu, Kartsev G N. On the mechanism of α-tocopherol synthesis. Effect of amines on the yield and purity of α-tocopherol [J]. Pharmaceutical Chemisty Journal, 1999, 33 (5): 267-268
[21]  Baldenius K, Bussche-Hlinnefeld L, Hilgemann E, Hoppe P, Stiirmer R. Acetate by condensation of trimethyldroquinone with isopytol [P]: EP, 132384A2. 2001-12-09
[22]  Liu Zuohua (刘作华), Sun Ruixiang (孙瑞祥), Tao Changyuan (陶长元), Wu Chunxia (吴春霞). A method for the preparation of vitamin E acetate [P]: CN, 102276572A. 2011-12-14
[23]  Juraj G?m?ry, Milan Králik. Study of (all-rac)-α-tocopherol synthesis from trimethylhydroquinone and isophytol at the presence of solid catalysts [J]. Acta Chimica Slovaca, 2010, 3 (2): 110-121

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133