The structure of acidified ionic liquid [emim]BF4 and its catalytic performance in the reaction for 4,4′-MDC synthesis

2007 ◽  
Vol 276 (1-2) ◽  
pp. 168-173 ◽  
Author(s):  
Xinqiang Zhao ◽  
Liyan Hu ◽  
Yanlou Geng ◽  
Yanji Wang
Keyword(s):  
Ionic Liquid ◽  
Catalytic Performance

Catalytic Performance of Imidazolide Basic Ionic Liquid in Knoevenagel Reactions in Aqueous Media

2011 ◽  
Vol 32 (4) ◽  
pp. 693-698
Author(s):  
Xuewei CHEN ◽  
Hongbing SONG ◽  
Xuehui LI ◽  
Furong WANG ◽  
Yu QIAN
Keyword(s):  
Ionic Liquid ◽  
Aqueous Media ◽  
Catalytic Performance ◽  
Basic Ionic Liquid

Efficient and Reusable Silica Gel Supported Metal Ionic Liquid Catalysts for Palmitic Acid Esterification to Biodiesel

2021 ◽  
Vol 43 (1) ◽  
pp. 1-1
Author(s):  
Guo Yingwei Guo Yingwei ◽  
Chen Xuedan Chen Xuedan ◽  
Yan Shiting Yan Shiting ◽  
Zhang Zhengliang Zhang Zhengliang ◽  
Chen Yuqin Chen Yuqin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Palmitic Acid ◽  
Silica Gel ◽  
High Surface ◽  
High Surface Area ◽  
Kinetic Studies ◽  
Catalytic Performance ◽  
Reaction Conditions ◽  
Acid Esterification ◽  
Supported Metal

A series of silica gel (SG) supported metal ionic liquid catalysts (x[Bmim]Cl-CrCl3/SG) were synthesized and exploited for the esterification of palmitic acid (PA) with methanol (ML) to produce biodiesel efficiently. The 10%[Bmim]Cl-CrCl3/SG catalyst with high surface area and desirable acidity exhibited the best catalytic performance and reusability after six consecutive running cycles. Based on the response surface analysis, the optimal reaction conditions were obtained as follows: methanol/acid mole ratio = 11:1 mol/mol, catalyst amount = 5.3 wt%, reaction time = 65 min, as well as reaction temperature = 373 K, reaching to a biodiesel yield of 96.1%. Further kinetic studies demonstrated that the esterification of PA with ML obeyed 1.41 order kinetics for acid concentration with the activation energy of 16.88 kJ/mol

Stability, interparticle interactions and catalytic performance of gold nanoparticles synthesized through ionic liquid mediated oil palm leaves extract

2018 ◽  
Vol 6 (4) ◽  
pp. 5024-5031 ◽  
Author(s):  
Muhammad Irfan ◽  
Muhammad Moniruzzaman ◽  
Tausif Ahmad ◽  
Ola Yahia Osman ◽  
Pradip Chandra Mandal ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ionic Liquid ◽  
Oil Palm ◽  
Catalytic Performance ◽  
Interparticle Interactions

Efficient and Reusable Silica Gel Supported Metal Ionic Liquid Catalysts for Palmitic Acid Esterification to Biodiesel

2021 ◽  
Vol 43 (1) ◽  
pp. 1-1
Author(s):  
Guo Yingwei Guo Yingwei ◽  
Chen Xuedan Chen Xuedan ◽  
Yan Shiting Yan Shiting ◽  
Zhang Zhengliang Zhang Zhengliang ◽  
Chen Yuqin Chen Yuqin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Palmitic Acid ◽  
Silica Gel ◽  
High Surface ◽  
High Surface Area ◽  
Kinetic Studies ◽  
Catalytic Performance ◽  
Reaction Conditions ◽  
Acid Esterification ◽  
Supported Metal

A series of silica gel (SG) supported metal ionic liquid catalysts (x[Bmim]Cl-CrCl3/SG) were synthesized and exploited for the esterification of palmitic acid (PA) with methanol (ML) to produce biodiesel efficiently. The 10%[Bmim]Cl-CrCl3/SG catalyst with high surface area and desirable acidity exhibited the best catalytic performance and reusability after six consecutive running cycles. Based on the response surface analysis, the optimal reaction conditions were obtained as follows: methanol/acid mole ratio = 11:1 mol/mol, catalyst amount = 5.3 wt%, reaction time = 65 min, as well as reaction temperature = 373 K, reaching to a biodiesel yield of 96.1%. Further kinetic studies demonstrated that the esterification of PA with ML obeyed 1.41 order kinetics for acid concentration with the activation energy of 16.88 kJ/mol

scholarly journals Preparation and Catalytic Performance of Ionic Liquid Catalyst Immobilized by ZrO2

2013 ◽  
Vol 25 (8) ◽  
pp. 4523-4526
Author(s):  
Jianwei Lian ◽  
Jianling Xia ◽  
Kun Huang ◽  
Mei Li
Keyword(s):  
Ionic Liquid ◽  
Catalytic Performance

Catalytic performance of ionic liquid for dehydrochlorination reaction: Excellent activity and unparalled stability

2019 ◽  
Vol 255 ◽  
pp. 117757 ◽  
Author(s):  
Pengze Zhang ◽  
Zhaobin Jiang ◽  
Yanhong Cui ◽  
Guanqun Xie ◽  
Yangzhen Jin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Catalytic Performance ◽  
Excellent Activity ◽  
Dehydrochlorination Reaction

Magnetic Nanoparticles Supported Acidic Ionic Liquid as a Highly Active and Reusable Catalyst for Esterification

2016 ◽  
Vol 852 ◽  
pp. 485-488 ◽  
Author(s):  
Qiang Zhang ◽  
Xin Zhao ◽  
Xue Hua Zhu ◽  
Ji Hang Li
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Magnetic Nanoparticles ◽  
Catalytic Performance ◽  
Significant Loss ◽  
Reusable Catalyst ◽  
Hydrogen Sulfate ◽  
External Magnet ◽  
Acidic Ionic Liquid ◽  
Highly Active

A magnetic nanoparticles supported dual acidic ionic liquid catalyst was prepared via anchoring 3-sulfobutyl-1-(3-propyltriethoxysilane) imidazolium hydrogen sulfate onto the surface of silica-coated Fe3O4 nanoparticles. And this novel supported acidic ionic liquid catalyst showed good catalytic performance in esterification. More importantly, the catalyst could be easily recovered by an external magnet and reused six times without significant loss of catalytic activity.

Preparation and Catalytic Performance of the Porous Polysulfone Microspheres Enabled by Immobilized Ionic Liquids for Esterification

2018 ◽  
Vol 1145 ◽  
pp. 90-94
Author(s):  
Yong Dong Zhao ◽  
Zhi Ping Zhao ◽  
Shuo Li ◽  
Peng Lu
Keyword(s):  
Ionic Liquid ◽  
Covalent Bond ◽  
Catalytic Performance ◽  
Inversion Method ◽  
Structure And Property ◽  
Porous Microspheres ◽  
H Nmr ◽  
Acidic Ionic Liquid ◽  
Ft Ir ◽  
Phase Inversion Method

Chloromethylated polysulfone (PSF-Cl) porous microspheres were prepared with non-solvent induced phase inversion method for the immobilization of acidic ionic liquid ([MIMBS][HSO4]). FT-IR, SEM, and 1H-NMR were used to characterize the structure and property of polysulfone porous microsphere supported ionic liquid (PSF-ILs). The results showed that acidic ionic liquid was supported onto the PSF-Cl porous microspheres by covalent bond. Furthermore, the catalyst exhibited a good catalytic activity with about 57% acetic acid conversion rate after 8h reaction. After the catalyst was reused for 7 times in the synthesis of ethyl acetate, the yield only decreased 6%.

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