Cellulase immobilization properties and their catalytic effect on cellulose hydrolysis in ionic liquid

2012 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhongliang Su
Keyword(s):  
Ionic Liquid ◽  
Catalytic Effect ◽  
Cellulose Hydrolysis

scholarly journals Ionic liquid-mediated selective extraction of lignin from wood leading to enhanced enzymatic cellulose hydrolysis

2009 ◽  
Vol 102 (5) ◽  
pp. 1368-1376 ◽  
Author(s):  
Sang Hyun Lee ◽  
Thomas V. Doherty ◽  
Robert J. Linhardt ◽  
Jonathan S. Dordick
Keyword(s):  
Ionic Liquid ◽  
Cellulose Hydrolysis ◽  
Selective Extraction

scholarly journals Access to cross-linked chitosans by exploiting CO2 and the double solvent-catalytic effect of ionic liquids

2017 ◽  
Vol 19 (5) ◽  
pp. 1235-1239 ◽  
Author(s):  
Andrea Mezzetta ◽  
Lorenzo Guazzelli ◽  
Cinzia Chiappe
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic Effect ◽  
Component System

Fist synthesis of ureido cross-linked chitosans employing the CO2–chitosan–ionic liquid three component system as a way to prepare new biomaterials.

A solvent-free protocol for the green synthesis of arylalkylidene rhodanines in a task-specific ionic liquid

2010 ◽  
Vol 88 (6) ◽  
pp. 514-518 ◽  
Author(s):  
Abdolhamid Alizadeh ◽  
Mohammad M. Khodaei ◽  
Ali Eshghi
Keyword(s):  
Ionic Liquid ◽  
Green Synthesis ◽  
Carbonyl Compounds ◽  
Catalytic Effect ◽  
Knoevenagel Condensation ◽  
Solvent Free ◽  
Detailed Mechanism ◽  
Solvent Free Conditions ◽  
First Time ◽  
Task Specific Ionic Liquid

2-Hydroxyethylammonium formate acts as a task-specific ionic liquid (TSIL) for the Knoevenagel condensation of carbonyl compounds with rhodanine to afford arylalkylidene rhodanines under solvent-free conditions and in good-to-excellent yields. Additionally, compared with those in organic solvents, the yields obtained in the presence of our ionic liquid (IL) were significantly increased. The detailed mechanism of the catalytic effect of TSIL is also reported for the first time.

scholarly journals Efficient and Reusable Iron Catalyst to Convert CO2 into Valuable Cyclic Carbonates

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1089
Author(s):  
Ana P. C. Ribeiro ◽  
Peter Goodrich ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic Effect ◽  
Iron Catalyst ◽  
Cyclic Carbonate ◽  
Cyclic Carbonates ◽  
Mild Conditions ◽  
First Time

The production of cyclic carbonates from CO2 cycloaddition to epoxides, using the C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz = 1H-pyrazol-1-yl) as a catalyst, is achieved in excellent yields (up to 98%) in a tailor-made ionic liquid (IL) medium under mild conditions (80 °C; 1–8 bar). A favorable synergistic catalytic effect was found in the [FeCl2{κ3-HC(pz)3}]/IL system. Notably, in addition to exhibiting remarkable activity, the catalyst is stable during ten consecutive cycles, the first decrease (11%) on the cyclic carbonate yield being observed during the 11th cycle. The use of C-scorpionate complexes in ionic liquids to afford cyclic carbonates is presented herein for the first time.

Cellulose hydrolysis and binding withTrichoderma reeseiCel5A and Cel7A and their core domains in ionic liquid solutions

2013 ◽  
Vol 111 (4) ◽  
pp. 726-733 ◽  
Author(s):  
Ronny Wahlström ◽  
Jenni Rahikainen ◽  
Kristiina Kruus ◽  
Anna Suurnäkki
Keyword(s):  
Ionic Liquid ◽  
Cellulose Hydrolysis ◽  
Liquid Solutions

Theoretical Study of Ionic Liquid Clusters Catalytic Effect on the Fixation of CO2

2018 ◽  
Vol 58 (1) ◽  
pp. 34-43 ◽  
Author(s):  
Xin Tan ◽  
Xiaomin Liu ◽  
Xiaoqian Yao ◽  
Yaqin Zhang ◽  
Kun Jiang
Keyword(s):  
Ionic Liquid ◽  
Catalytic Effect ◽  
Theoretical Study ◽  
Liquid Clusters

scholarly journals Valorization of Microcrystalline Cellulose using Heterogeneous Protonated Zeolite Catalyst: An experimental and kinetics approach

2021 ◽  
Author(s):  
Samuel Kassaye ◽  
Dinesh Gupta ◽  
Kamal. K. Pant ◽  
Sapna Jain
Keyword(s):  
Activation Energy ◽  
Ionic Liquid ◽  
Microcrystalline Cellulose ◽  
Maximum Yield ◽  
Cellulose Hydrolysis ◽  
Reducing Sugar ◽  
Zeolite Catalysts ◽  
Bet Surface Area ◽  
X Ray Diffraction ◽  
Temperature Programmed

Abstract This study aims to valorize microcrystalline cellulose (MCC) using protonated zeolite catalysts such as (H-ZSM-5) and Cr/H-ZSM-5 (5 %) in ionic liquid. The catalytic effect in synergy with 1-butyl-3-methylimidazolium Chloride ([BMIM] Cl) ionic liquid was studied in detail. The total reducing sugar (TRS) was determined using 3, 5-dinitrisalcylic acid (DNS) array method. The catalysts were characterized using techniques such as Fourier transform infrared (FT-IR), X-ray diffraction analysis (XRD), temperature-programmed desorption of ammonia (NH3-TPD), and BET-surface area analyzer. H-ZSM-5 effectively depolymerized cellulose with a maximum yield of 70% total reducing sugar (34% glucose, 8% fructose, and 4.5% 5-HMF) Cr/H-ZSM-5 catalyst dehydrates fructose to 5-HMF with a yield of 53%. The use of ionic liquid significantly reduced the activation energy of formation and decomposition. The activation energy determined in cellulose hydrolysis was 85.83 KJ mol− 1 for a reaction time of 180 min while the decomposition energy was found to be 42.5 kJ mol− 1.

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