Fast CO2 hydrogenation to formic acid catalyzed by an Ir(PSiP) pincer hydride in a DMSO/water/ionic liquid solvent system

A series of alumina supported Ru nanoparticles (Ru γ -Al2O3-x (x=2-10 Ru wt%) was synthesized using the ethylene glycol reduction method. XRD, TEM, EDX, H2-chemisorption, XPS and H2-TPD analytical techniques were used to understand the physiochemical nature of alumina supported Ru nanoparticles. All the well-characterized Ru#Al2O3-x (x=2-10 Ru wt%) catalysts were used for high-pressure CO2 hydrogenation to formic acid synthesis. A clear correlation was recorded between the physiochemical properties of developed catalysts and the molar quantity of formic acid. Among all the developed catalysts, Ru#Al2O3-2 catalyst with or without ionic liquid reaction medium gave a good molar quantity of formic acid. Application of ionic liquid was also expanded, and ionic liquid medium appeared as a good solvent system as compared to the amine solvent system, which not only provides better solubility of reactants and catalysts but also found useful in the easy recovery of formic acid after the completion of the reaction. The catalyst recycled seven times with easy product isolation stem to make this system very useful and fulfill the requirement of sustainable chemistry.

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A synergetic effect of ionic liquid and microwave irradiation on the acid-catalyzed direct conversion of cellulose into methyl glucopyranoside

Holzforschung ◽

10.1515/hf-2018-0020 ◽

2018 ◽

Vol 72 (12) ◽

pp. 1025-1030

Author(s):

Mafuyu Saito ◽

Takao Kishimoto ◽

Masahiro Hamada ◽

Noriyuki Nakajima ◽

Daisuke Urabe

Keyword(s):

Ionic Liquid ◽

Microwave Irradiation ◽

Synergetic Effect ◽

Acid Catalyst ◽

Solvent System ◽

Direct Conversion ◽

Important Research Topic ◽

Acid Catalyzed ◽

Methyl Pyrrolidone

AbstractConversion of lignocellulose into useful chemicals is an important research topic in the area of biomass utilization. In this study, microcrystalline cellulose (MC) was dissolved in a mixed-solvent system containing the ionic liquid (IL) 1-allyl-3-methylimidazolium chloride ([Amim]Cl) andN-methyl-pyrrolidone (NMP), and the cellulose was directly converted into methyl glucoside (MG) by acid-catalyzed methanolysis aided by microwave irradiation (μWIr). Under moderate reaction temperature and pressure, and in the presence of acetyl chloride/methanol (in situformed HCl) as an acid catalyst, MG was obtained in a 42% yield. In contrast, in the absence of either IL or μWIr, the MG yield was only 5 or 21%, respectively. Both μWIr and the dissolution of cellulose in IL were quite effective for the conversion of cellulose into MG.

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110th Anniversary: Ionic Liquid Promoted CO2 Hydrogenation to Free Formic Acid over Pd/C

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.9b00654 ◽

2019 ◽

Vol 58 (16) ◽

pp. 6333-6339 ◽

Cited By ~ 1

Author(s):

Yunyan Wu ◽

Yanfei Zhao ◽

Huan Wang ◽

Bo Yu ◽

Xiaoxiao Yu ◽

...

Keyword(s):

Ionic Liquid ◽

Formic Acid ◽

Co2 Hydrogenation

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Hydrotalcite Anchored Ruthenium Catalyst for CO2 Hydrogenation Reaction

Letters in Organic Chemistry ◽

10.2174/1570178615666180816120058 ◽

2019 ◽

Vol 16 (5) ◽

pp. 396-408

Author(s):

Vivek Srivastava

Keyword(s):

Ionic Liquid ◽

Formic Acid ◽

Catalytic System ◽

Acid Synthesis ◽

Hydrogenation Reaction ◽

Significant Loss ◽

Co2 Hydrogenation ◽

Catalyst Stability ◽

Catalyst Recycling ◽

Tem Analysis

We developed a series of new hydrotalcite functionalized Ru catalytic system to synthesize formic acid via CO2 hydrogenation reaction. Advance analytical procedures like FTIR, N2 physisorption, ICP-OES, XPS, and TEM analysis were applied to understand the physiochemical nature of functionalized hydrotalcite materials. This well-analyzed system was used as catalysts for CO2 hydrogenation reaction (with and without ionic liquid medium). Ru metal containing functionalized hydrotalcite materials were found highly active catalysts for formic acid synthesis via hydrogenation reaction. The concern of catalyst stability was studied via catalysts leaching and recycling experiments. We recycled the ionic liquid mediated functionalized hydrotalcite catalytic system up to 8 runs without any significant loss of catalytic activity. Surprisingly, no sign of catalyst leaching was recorded during the catalyst recycling experiment.

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Decomposition of Formic Acid Catalyzed by a Phosphine-Free Ruthenium Complex in a Task-Specific Ionic Liquid

ChemCatChem ◽

10.1002/cctc.201000119 ◽

2010 ◽

Vol 2 (10) ◽

pp. 1265-1270 ◽

Cited By ~ 42

Author(s):

Jackson D. Scholten ◽

Martin H. G. Prechtl ◽

Jairton Dupont

Keyword(s):

Ionic Liquid ◽

Formic Acid ◽

Ruthenium Complex ◽

Acid Catalyzed ◽

Task Specific Ionic Liquid

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Investigation of a novel acid-catalyzed ionic liquid pretreatment method to improve biomass enzymatic hydrolysis conversion

Applied Microbiology and Biotechnology ◽

10.1007/s00253-014-5664-0 ◽

2014 ◽

Vol 98 (11) ◽

pp. 5275-5286 ◽

Cited By ~ 31

Author(s):

Qing Qing ◽

Rong Hu ◽

Yucai He ◽

Yue Zhang ◽

Liqun Wang

Keyword(s):

Ionic Liquid ◽

Enzymatic Hydrolysis ◽

Pretreatment Method ◽

Ionic Liquid Pretreatment ◽

Acid Catalyzed

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Electro-oxidation of formic acid catalyzed by FePt nanoparticles

Physical Chemistry Chemical Physics ◽

10.1039/b603045a ◽

2006 ◽

Vol 8 (23) ◽

pp. 2779 ◽

Cited By ~ 114

Author(s):

Wei Chen ◽

Jaemin Kim ◽

Shouheng Sun ◽

Shaowei Chen

Keyword(s):

Formic Acid ◽

Fept Nanoparticles ◽

Electro Oxidation ◽

Acid Catalyzed

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Acid-catalyzed Solvolysis of Isonitriles. I

Canadian Journal of Chemistry ◽

10.1139/v71-402 ◽

1971 ◽

Vol 49 (14) ◽

pp. 2455-2459 ◽

Cited By ~ 18

Author(s):

Y. Y. Lim ◽

A. R. Stein

Keyword(s):

Formic Acid ◽

Acid Catalysis ◽

Hydrolysis Product ◽

Rate Dependence ◽

Linear Rate ◽

First Order ◽

Methyl Amine ◽

Acid Catalyzed ◽

Pseudo First Order ◽

Hydrolysis Of

The acid-catalyzed hydrolysis of methyl isonitrile has been examined. The initial hydrolysis product is N-methylformamide which is further hydrolyzed to methyl amine and formic acid at a much slower rate. The hydrolysis to N-methylformamide is pseudo-first order in methyl isonitrile and shows a linear rate dependence on concentration of general (buffer) acid at fixed pH. The significance of general acid-catalysis in terms of the mechanism of the hydrolysis is considered and taken as evidence for carbon protonation rather than nitrogen protonation as the initiating step.

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