Efficient process for the direct transformation of cellulose and carbohydrates to 5-(hydroxymenthyl)furfural with dual-core sulfonic acid ionic liquids and co-catalysts

RSC Advances ◽  
2013 ◽  
Vol 3 (21) ◽  
pp. 7782 ◽  
Author(s):  
Jincai Shi ◽  
Haiyan Gao ◽  
Yongmei Xia ◽  
Wei Li ◽  
Haijun Wang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Direct Transformation ◽  
Efficient Process ◽  
Co Catalysts ◽  
Dual Core

Study on the Green Nitration of Toluene in a Microglass Reactor

2011 ◽  
Vol 396-398 ◽  
pp. 2018-2022
Author(s):  
Bin Dong Li ◽  
Jian Wu ◽  
Xiao Ming Ma
Keyword(s):  
Ionic Liquids ◽  
Nitric Acid ◽  
Continuous Processing ◽  
Efficient Process ◽  
Controlled Conditions ◽  
Recyclable Catalysts

Continuous processing in the microreactor represents a novel way for the safe and expedient conduct of high energetic nitration. Apart from handling benefits,nitration in microreactors proceed under precisely controlled conditions providing improved yields and selectivity. This paper studied the nitration of toluene in the microglass reactor using concentrated nitric acid as the nitrating agent and SO3H-functional ionic liquids, Lanthanide(iii) trifluoroacetate as recyclable catalysts. We described a mild, efficient process for the nitration of toluene.

Hydrothermal conversion of glucose to levulinic acid using multifunctional ionic liquids: effects of metal ion co-catalysts on the product yield

2018 ◽  
Vol 42 (1) ◽  
pp. 228-236 ◽  
Author(s):  
Komal Kumar ◽  
Firdaus Parveen ◽  
Tanmoy Patra ◽  
Sreedevi Upadhyayula
Keyword(s):  
Ionic Liquids ◽  
Catalytic System ◽  
Metal Ion ◽  
Levulinic Acid ◽  
Product Yield ◽  
Metal Salts ◽  
Hydrothermal Conversion ◽  
Co Catalysts ◽  
Platform Chemicals ◽  
Acidic Ionic Liquids

An efficient catalytic system comprising Bronsted acidic ionic liquids and Lewis acidic metal salts for hydrothermal glucose conversion to platform chemicals.

n-Butyraldehyde Self-Condensation Catalyzed by Sulfonic Acid Functionalized Ionic Liquids

2014 ◽  
Vol 53 (43) ◽  
pp. 16707-16714 ◽  
Author(s):  
Xiaolong Zhang ◽  
Hualiang An ◽  
Hongqi Zhang ◽  
Xinqiang Zhao ◽  
Yanji Wang
Keyword(s):  
Ionic Liquids ◽  
Sulfonic Acid

Synthesis of 4,4′-MDC in the Presence of Sulfonic Acid-functionalized Ionic Liquids

2009 ◽  
Vol 17 (5) ◽  
pp. 756-760 ◽  
Author(s):  
Yanlou GENG ◽  
Liyan HU ◽  
Xinqiang ZHAO ◽  
Hualiang AN ◽  
Yanji WANG
Keyword(s):  
Ionic Liquids ◽  
Sulfonic Acid

scholarly journals Biodiesel fromCitrullus colocynthisOil: Sulfonic-Ionic Liquid-Catalyzed Esterification of a Two-Step Process

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Yasir Ali Elsheikh ◽  
Faheem Hassan Akhtar
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Molar Ratio ◽  
Disulfonic Acid ◽  
Hydrogen Sulfate ◽  
Citrullus Colocynthis ◽  
Step Process ◽  
Acidic Catalyst ◽  
Acidic Catalysts

Biodiesel was prepared fromCitrullus colocynthisoil (CCO) via a two-step process. The first esterification step was explored in two ionic liquids (ILs) with 1,3-disulfonic acid imidazolium hydrogen sulfate (DSIMHSO4) and 3-methyl-1-sulfonic acid imidazolium hydrogen sulfate (MSIMHSO4). Both ILs appeared to be good candidates to replace hazardous acidic catalyst due to their exceptional properties. However, the two sulfonic chains existing in DSIMHSO4were found to increase the acidity to the IL than the single sulfonic chain in MSIMHSO4. Based on the results, 3.6 wt% of DSIMHSO4, methanol/CCO molar ratio of 12 : 1, and 150°C offered a final FFA conversion of 95.4% within 105 min. A 98.2% was produced via second KOH-catalyzed step in 1.0%, 6 : 1 molar ratio, 600 rpm, and 60°C for 50 min. This new two-step catalyzed process could solve the corrosion and environmental problems associated with the current acidic catalysts.

Preparation of Biodiesel from Tung Oil Catalyzed by Sulfonic-Functional Brǒnsted Acidic Ionic Liquids

2011 ◽  
Vol 314-316 ◽  
pp. 1459-1462 ◽  
Author(s):  
Jian Hui Zhou ◽  
Yu Jing Lu ◽  
Bao Hua Huang ◽  
Yan Ping Huo ◽  
Kun Zhang
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Acid Group ◽  
Sulfonic Acid Group ◽  
Tung Oil ◽  
Acidic Ionic Liquids ◽  
Good Catalytic Activity

Preparation of biodiesel from tung oil catalyzed by five Brǒnsted acidic ionic liquids (ILs) with propyl sulfonic acid group was investigated. These ILs show good catalytic activity for the transeserification of tung oil. Among these ILs, [C3SO3Hmim]HSO4 showed a highest catalytic activity. In addition, these ionic liquids had a good reusability and could be easily separated from the biodiesel.

Physically mixed catalytic system of amino and sulfo-functional porous organic polymers as efficiently synergistic co-catalysts for one-pot cascade reactions

2020 ◽  
Vol 44 (22) ◽  
pp. 9546-9556
Author(s):  
Zunming Sun ◽  
Fuyao Liu ◽  
Xinyue Yang ◽  
Xianpei Huang ◽  
Mengmeng Zhang ◽  
...  
Keyword(s):  
Catalytic System ◽  
Sulfonic Acid ◽  
Polymeric Materials ◽  
Cascade Reactions ◽  
Porous Polymers ◽  
Amino Groups ◽  
Acid Base ◽  
Porous Organic Polymers ◽  
One Pot ◽  
Co Catalysts

Acid/base bi-functional polymeric materials were prepared using physically mixed porous polymers P(DVB-VBS) with sulfonic acid and P(DVB-VBA) with amino groups for various cascade reactions.

An Efficient Synthesis of Pyrrolidinone Derivatives in the Presence of 1,1′-Butylenebis(3-sulfo-3H-imidazol-1-ium) Chloride

2018 ◽  
Vol 71 (8) ◽  
pp. 566 ◽  
Author(s):  
Nader Ghaffari Khaligh ◽  
Kim Foong Chong ◽  
Taraneh Mihankhah ◽  
Salam Titinchi ◽  
Mohd Rafie Johan ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Electronic Effect ◽  
Catalytic Properties ◽  
Catalytic Efficiency ◽  
Optimal Conditions ◽  
Efficient Synthesis ◽  
Mild Conditions ◽  
Structure Activity ◽  
Relationship Of

The catalytic efficiency of 1,1′-butylenebis(3-sulfo-3H-imidazol-1-ium) chloride as a sulfonic acid-functionalized ionic liquid was demonstrated for the synthesis of pyrrolidinone derivatives under mild conditions. The electronic effect of substituents on aniline derivatives was investigated. Further, a study on the structure–activity relationship of ionic liquids containing sulfonic groups for the synthesis of ethyl-2-(4-chlorophenyl)-4-hydroxy-5-oxo-1-(p-tolyl)-2,5-dihydro-1H-pyrrole-3-carboxylate was performed under optimal conditions. The results showed that the catalytic properties of ionic liquids containing two sulfonic or imidazole moieties with carbon spacers was superior to ionic liquids having one sulfonic or imidazole moiety with no carbon spacer.

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