Intensifying strategy of ionic liquid for Pd-based catalysts in anthraquinone hydrogenation

2022 ◽  
Author(s):  
Fuying Wang ◽  
Yiming Jia ◽  
Jingyue Liang ◽  
You Han ◽  
Jinli Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Hydrogenation Reaction ◽  
Novel Strategy

A novel strategy was first employed to prepare the Pd-IL complex catalysts for the anthraquinone hydrogenation reaction, taking advantage of the ionic liquid (IL). The IL microphase provides an excellent...

Promotive Selectivity to C2-C3 Polyols From Alkaline Cellulose Hydrogenated by Ionic Liquid-stablized Ru Nanoparticles

2021 ◽  
Author(s):  
Mingrui Liu ◽  
Hua Wang
Keyword(s):  
Ionic Liquid ◽  
Ethylene Glycol ◽  
Conversion Rate ◽  
Metal Salt ◽  
Hydrogenation Reaction ◽  
Metal Catalyst ◽  
Ru Nanoparticles ◽  
Naoh Solution ◽  
Plausible Mechanism ◽  
Amorphous Part

Abstract Alkaline cellulose hydrogenolysis on metal catalyst was an effective way to get C2~C3 polyols. The alkaline cellulose was obtained by treating cellulose with 4 wt% NaOH solution. Ionic liquid-stablized Ru nanoparticles were prepared by reducing metal salt in ionic liquid. The SEM results indicate that the amorphous part of alkaline cellulose is helpful for getting the catalyst into the cavities to have a further hydrogenation reaction. When hydrogenolysis of alkaline cellulose over Ru/[Bmim]BF4 nanoparticles was conducted at 433 K, 63.78% of the substrate was converted with glycerol, 1,2-propanediol and ethylene glycol as main products of which selectivity was up to 58.91 %, whereas the conversion rate over Ru/C catalyst of alkaline cellulose was 59.23 % and only 26.11 % C2~C3 polyols were detected. Moreover, if the ionic liquid-stablized Ru nanoparticles were doped with 53.7 % Ni, the selectivity of C2~C3 polyols was promoted to 65.07 %. These results suggested the advantages of the ionic liquid-stablized Ru nanoparticles, especially doping with Ni, have potentials for promotive selectivity to C2~C3 alcohols. Put forward the plausible mechanism finally.

Selective hydrogenation of CO2gas to formic acid over nanostructured Ru-TiO2catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42297-42306 ◽  
Author(s):  
Praveenkumar Ramprakash Upadhyay ◽  
Vivek Srivastava
Keyword(s):  
Ionic Liquid ◽  
Formic Acid ◽  
Selective Hydrogenation ◽  
Hydrogenation Reaction

Ionic-liquid-mediated TiO2supported Ru for the selective CO2hydrogenation reaction and isolation of HCOOH.

Fabrication of Platinum Nanoparticles through Ionic Liquid Method and its Catalytic Properties in Hydrogenation Reaction

2013 ◽  
Vol 745-746 ◽  
pp. 84-89
Author(s):  
Liu Liu Ding ◽  
Guo Jian Jiang ◽  
Wen Jun Li ◽  
Yun Ying Liu ◽  
Jia Yue Xu
Keyword(s):  
Ionic Liquid ◽  
Hydrogen Pressure ◽  
Room Temperature ◽  
Catalytic Properties ◽  
Pt Nanoparticles ◽  
Hydrogenation Reaction ◽  
Room Temperature Ionic Liquid ◽  
Structure And Morphology ◽  
Mean Diameter ◽  
The Mean

Room temperature ionic liquid [1-butyl-3-methylimidazoliuBF4 was prepared under microwave irradiation. Platinum (Pt) nanoparticles were synthesized in the ionic liquid with ethanol as reductant. The structure and morphology of the Pt nanoparticles were characterized by SEM, FTIR and TG-DTA. The results show that the mean diameter of the nanoparticles was about 10nm and the surface was modified with the room temperature ionic liquid. The catalytic property was evaluated by hydrogenation of benzaldehyde in ethanol and the conversion reached up to 80% under hydrogen pressure.

Transfer hydrogenation reaction using novel ionic liquid based Rh(I) and Ir(III)-phosphinite complexes as catalyst

2016 ◽  
Vol 824 ◽  
pp. 25-32 ◽  
Author(s):  
Duygu Elma Karakaş ◽  
Feyyaz Durap ◽  
Akın Baysal ◽  
Yusuf Selim Ocak ◽  
Khadichakhan Rafikova ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Hydrogenation Reaction ◽  
Transfer Hydrogenation ◽  
Transfer Hydrogenation Reaction

A novel Pseudo Three-Component Synthetic Strategy for the Synthesis of 1,6-dihydroazaazulenes via Cyclization of Pyrrolyl-enones

Synlett ◽  
2021 ◽  
Author(s):  
Luis Chacon-Garcia ◽  
Carlos J. Cortés-García ◽  
Ana Karen García-Dueñas ◽  
Josue Valentín-Escalera ◽  
Cesar Rogelio Solorio-Alvarado ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Medicinal Chemistry ◽  
One Pot ◽  
Mild Conditions ◽  
Synthetic Strategy ◽  
Three Component Reaction ◽  
Privileged Scaffold ◽  
Target Molecules ◽  
Novel Strategy ◽  
The One

Abstract A synthetic novel strategy involving a pseudo three component reaction to obtain 1,6-dihydroazaazulenes derivates via cyclization of pyrrolyl-enones by a novel pseudo three-component reaction was developed. This reaction is carried out under mild conditions from simple starting materials and catalyzed with ionic liquid. Notably, 3 new C-C bonds are formed in the one-pot process. The target molecules are of interest in medicinal chemistry as they contain a privileged scaffold and are considered indole homologues.

Hydrotalcite Anchored Ruthenium Catalyst for CO2 Hydrogenation Reaction

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.

A novel strategy for conversion of methanol and CO2 into dimethoxymethane in a basic ionic liquid

2016 ◽  
Vol 421 ◽  
pp. 117-121 ◽  
Author(s):  
Qijun Zhang ◽  
Haoyan Zhao ◽  
Bin Lu ◽  
Jingxiang Zhao ◽  
Qinghai Cai
Keyword(s):  
Ionic Liquid ◽  
Basic Ionic Liquid ◽  
Novel Strategy
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