Reusable and Efficient Polystryrene-Supported Acidic Ionic Liquid Catalyst for the Synthesis of n-Butyl Acetate

2014 ◽  
Vol 983 ◽  
pp. 20-25 ◽  
Author(s):  
Yu He Cheng ◽  
Biao Zhang ◽  
Shang Jiang Dai ◽  
Han Lin Tong ◽  
Li Xia Li
Keyword(s):  
Ionic Liquid ◽  
Acetic Acid ◽  
Catalytic Activity ◽  
Butyl Acetate ◽  
Butyl Alcohol ◽  
Acidic Ionic Liquid

A series of polystyrene-supported 1-(propyl-3-sulfonate)-3-methy-imidazolium hydrosulfate acidic ionic liquid (PS-[SO3H-PMIM][HSO4]) catalysts with different [SO3H-PMIM][HSO4] contents were prepared and tested for esterification of n-butyl alcohol with acetic acid. It was found that the reactivity of the catalyst increased with increasing [SO3H-PMIM][HSO4] content, and best yield of n-Butyl acetate of 98% was obtained using PS-[SO3H-PMIM][HSO4]1 within 1.5h. The catalytic activity of this catalyst decreased slightly after fifth using.

Synthesis, Characterization, and Crystal Structure of Several Novel Acidic Ionic Liquids: 1-ethyl-2-alkyl-benzimidazolium Tetra-Fluoroborate

2013 ◽  
Vol 457-458 ◽  
pp. 139-143 ◽  
Author(s):  
Ming Tian Wang ◽  
Chang Ping Pan ◽  
Wei Peng Gai ◽  
Xiao Xia Lv ◽  
Min Gang Zhai ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ionic Liquid ◽  
Acetic Acid ◽  
Catalytic Activity ◽  
Lamellar Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
Good Catalytic Activity

A series of novel acidic ionic liquid: 1-ethyl-2-alkyl-benzimidazolium tetra-fluoroborate (alkyl= Et, Pr-n, Bu-n) were prepared by simple acid-based neutralization of 1-ethyl-2-alkyl-benzimidazole and tetrafluoroboric acid. The compounds were characterized by FTIR spectra, elemental analysis,1HNMR spectra and thermogravimetric analysis. These novel tetra-fluoroborate salts show good catalytic activity to esterification of benzyl alcohol and acetic acid. Furthermore, a crystal of ([H-ebBiBF4) was prepared with the crystal structure and determined by X-ray diffraction analysis. The molecular is of lamellar structure as mainly π electron ring is stacked interleaving between two layers. The results of cation and anion arranged orderly in pair indicate that the coulombic attraction is more dominant. Simultaneously, the weak local hydrogen bonds C-H···F exist in the molecules.

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.

Understanding the role of hydrogen bonding in Brønsted acidic ionic liquid-catalyzed transesterification: a combined theoretical and experimental investigation

2016 ◽  
Vol 18 (48) ◽  
pp. 32723-32734 ◽  
Author(s):  
Kaixin Li ◽  
Yibo Yan ◽  
Jun Zhao ◽  
Junxi Lei ◽  
Xinli Jia ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Ionic Liquid ◽  
Hydrogen Bonding ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
Hydrogen Bonding Networks

The intra- and inter-hydrogen bonding networks that govern the catalytic activity of Brønsted acidic ionic liquids were identified.

A novel solid acid catalyst synthesized from ZnAl2O4 spinel and its application in the esterification of acetic acid and n-butyl alcohol

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19652-19658 ◽  
Author(s):  
An-Qi Wang ◽  
Xiu-Ling Wu ◽  
Jun-Xia Wang ◽  
Hui Pan ◽  
Xiao-Yun Tian ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Catalytic Activity ◽  
Structural Stability ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Mesoporous Structure ◽  
Butyl Alcohol ◽  
Znal2o4 Spinel

A new spinel-style S2O82−/ZnAl2O4 catalyst with the mesoporous structure exhibited the well catalytic activity and structural stability.

Silica Gel Supported Dual Acidic Ionic Liquid as a Recyclable and Efficient Catalyst for Esterification and Acetalization Reactions

2011 ◽  
Vol 233-235 ◽  
pp. 1336-1339 ◽  
Author(s):  
Qiang Zhang ◽  
Hong Su ◽  
Jun Luo
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Silica Gel ◽  
Covalent Bond ◽  
High Catalytic Activity ◽  
The Novel ◽  
Hydrogen Sulfate ◽  
Efficient Catalyst ◽  
Acidic Ionic Liquid

A supported dual acidic ionic liquid was prepared via anchoring 3-sulfobutyl-1-(3-propyltriethoxysilane) imidazolium hydrogen sulfate onto common silica gel by covalent bond. The novel immobilized acidic ionic liquid illustrated high catalytic activity in esterification and acetalization reactions. The products could be separated by simple decantation and the recovered catalyst could be recycled without remarkable loss of catalytic activity even after eight runs for esterification and six runs for acetalization.

scholarly journals Brönsted Acidic Ionic Liquid 1-(1-Propylsulfonic)-3-methylimidazolium-Chloride Catalyzed Hydrolysisof D-Cellobiose in Aqueous Medium

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Ananda S. Amarasekara ◽  
Bernard Wiredu
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Sulfuric Acid ◽  
Acid Group ◽  
H Nmr ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Cellobiose Hydrolysis ◽  
Glucose Anomers ◽  
Hydrolysis Of

Brönsted acidic ionic liquid 1-(1-propylsulfonic)-3-methylimidazolium chloride (PSMIMCl) shows a higher catalytic activity than sulfuric acid in the hydrolysis of D-cellobiose to D-glucose in water at 90–120°C. This catalytic activity enhancement is more significant at higher temperatures, and at 120°C, PSMIMCl produced 64.5% glucose yield, whereas H2SO4 produced only 42.2% after 40 min. reaction, and this is a 52.8% enhancement of catalytic activity due to the alkylimidazolium group attached to the sulfonic acid group. 1H NMR monitoring of the D-cellobiose hydrolysis in PSMIMCl and sulfuric acid mediums failed to reveal intermediates in the hydrolysis reaction, and this is probably due to rapid conversion of the intermediate(s) to a mixture of D-glucose anomers with α:β≈1:1.6.

Designed ether-functionalized acidic ionic liquid catalyst for butyl acetate synthesis

2018 ◽  
Vol 96 (11) ◽  
pp. 2455-2460 ◽  
Author(s):  
Xiantao Feng ◽  
Cai Zhang ◽  
Yunling Liu ◽  
Xiaoyong Zuo ◽  
Haoxiang Shi
Keyword(s):  
Ionic Liquid ◽  
Butyl Acetate ◽  
Acidic Ionic Liquid

scholarly journals Catalytic activity comparison of Zr–SBA-15 immobilized by a Brønsted–Lewis acidic ionic liquid in different esterifications

RSC Advances ◽  
2017 ◽  
Vol 7 (51) ◽  
pp. 32427-32435 ◽  
Author(s):  
Liming Dai ◽  
Qian Zhao ◽  
Minglan Fang ◽  
Ruifeng Liu ◽  
Mingfeng Dong ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Molecular Sieves ◽  
Physical Adsorption ◽  
Mesoporous Molecular Sieves ◽  
One Pot ◽  
Molar Ratios ◽  
Acidic Ionic Liquid ◽  
Activity Comparison ◽  
Lewis Acidic Ionic Liquid

Zirconium-incorporated SBA-15 mesoporous molecular sieves (Zr–SBA-15) with different Si/Zr molar ratios were one-pot synthesized and characterized by XRD, TEM and N2 physical adsorption.

Alkylation of Phenol with Cyclohexanol Catalyzed by Acidic Ionic Liquid

2011 ◽  
Vol 233-235 ◽  
pp. 188-193 ◽  
Author(s):  
Hai Bing Yu ◽  
Jun Nan ◽  
Jing Cheng Zhang ◽  
Jian Zhou Gui
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Reaction Time ◽  
Reaction Temperature ◽  
Reactant Ratio ◽  
Temperature Reaction ◽  
Reaction Conditions ◽  
Acidic Ionic Liquid ◽  
Optimum Reaction

Alkylation of phenol with cyclohexanol catalyzed by acidic ionic liquid has been investigated. The influences of reaction temperature, reaction time, reactant ratio (mol ratio of phenol to cyclohexanol), the amount and the recycle of ionic liquid on catalytic activity were studied. The conversion of phenol and the selectivity of paracyclohexylphenol were 75.5% and 61.6%, respectively, under optimum reaction conditions. The ionic liquid was utilized repeatedly over three times without remarkable loss of catalytic activity．

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