Dual catalysis mechanism of alcohol solvent and Cu catalyst for a new methanol synthesis method

2005 ◽  
Vol 6 (4) ◽  
pp. 275-279 ◽  
Author(s):  
Ruiqin Yang ◽  
Yi Zhang ◽  
Noritatsu Tsubaki
Keyword(s):  
Methanol Synthesis ◽  
Synthesis Method ◽  
Catalysis Mechanism ◽  
Cu Catalyst ◽  
Alcohol Solvent ◽  
Dual Catalysis

Methanol synthesis from CO2: a DFT investigation on Zn-promoted Cu catalyst

2019 ◽  
Vol 46 (3) ◽  
pp. 1749-1769 ◽  
Author(s):  
Huayan Zheng ◽  
Nilesh Narkhede ◽  
Linyi Han ◽  
Huacheng Zhang ◽  
Zhong Li
Keyword(s):  
Methanol Synthesis ◽  
Cu Catalyst

Microwave-assisted heteropolyanion-based ionic liquid promoted sustainable protocol to N-heteroaryl amides via N-directing dual catalyzed oxidative amidation of aldehydes

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107699-107707 ◽  
Author(s):  
Renzhong Fu ◽  
Yang Yang ◽  
Weihua Jin ◽  
Hui Gu ◽  
Xiaojun Zeng ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Microwave Assisted ◽  
Catalysis Mechanism ◽  
Dual Catalysis ◽  
Oxidative Amidation

A procedure for the synthesis of N-heteroaryl amides directly from oxidative amidation of aldehydes catalyzed by heteropolyanion-based ionic liquids has been reported. The proposed N-directing dual-catalysis mechanism was briefly investigated.

Low temperature methanol synthesis in alcohol solvent over copper-based catalyst

2009 ◽  
Vol 10 (12) ◽  
pp. 1620-1624 ◽  
Author(s):  
Baoshan Hu ◽  
Yoko Yamaguchi ◽  
Kaoru Fujimoto
Keyword(s):  
Low Temperature ◽  
Methanol Synthesis ◽  
Alcohol Solvent ◽  
Copper Based Catalyst

Effect of Support on Methanol Synthesis over Cu Catalyst

1994 ◽  
Vol 23 (10) ◽  
pp. 1877-1880 ◽  
Author(s):  
Tadahiro Fujitani ◽  
Masahiro Saito ◽  
Yuki Kanai ◽  
Taiki Watanabe ◽  
Junji Nakamura ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
Cu Catalyst ◽  
Effect Of Support

Pd/Cu dual catalysis: highly enantioselective access to α-substituted α-amino acids and α-amino amides

2018 ◽  
Vol 54 (6) ◽  
pp. 599-602 ◽  
Author(s):  
Xiaohong Huo ◽  
Jingke Fu ◽  
Xiaobo He ◽  
Jianzhong Chen ◽  
Fang Xie ◽  
...  
Keyword(s):  
Amino Acids ◽  
Catalyst System ◽  
Asymmetric Allylation ◽  
Cu Catalyst ◽  
Dual Catalysis ◽  
High Yields ◽  
Amino Amides

In this work, we have developed a synergistic Pd/Cu catalyst system for the asymmetric allylation of glycine iminoesters/amides, affording a range of α-substituted α-amino acids/amides in high yields and with excellent enantioselectivities (88 → 99% ee).

scholarly journals Membrane Reactor for Methanol Synthesis Using Si-Rich LTA Zeolite Membrane

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 505
Author(s):  
Masahiro Seshimo ◽  
Bo Liu ◽  
Hey Ryeon Lee ◽  
Katsunori Yogo ◽  
Yuichiro Yamaguchi ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
Membrane Reactor ◽  
Synthesis Method ◽  
Packed Bed ◽  
Zeolite Membrane ◽  
Packed Bed Reactor ◽  
Co2 Conversion ◽  
Experimental Conditions ◽  
Reaction Field ◽  
Lta Zeolite

We successfully demonstrated the effect of a membrane reactor for methanol synthesis to improve one-pass CO2 conversion. An Si-rich LTA membrane for dehydration from a methanol synthesis reaction field was synthesized by the seed-assisted hydrothermal synthesis method. The H2O permselective performance of the membrane showed 1.5 × 10−6 mol m−2 s−1 Pa−1 as H2O permeance and around 2,000 as selectivity of H2O/MeOH at 473 K. From the results of membrane reactor tests, the CO2 conversion of the membrane reactor was higher than that of the conventional packed-bed reactor under the all of experimental conditions. Especially, at 4 MPa of reaction pressure, the conversion using the membrane reactor was around 60%. In the case of using a packed-bed reactor, the conversion was 20% under the same conditions. In addition, the calculated and experimental conversion were in good agreement in both the case of the membrane reactor and packed-bed reactor.

The Role of Cu1-O3 Species in Single-Atom Cu Catalyst for Directional Methanol Synthesis from CO2 Hydrogenation

2021 ◽  
Author(s):  
Huibo Zhao ◽  
Ruofan Yu ◽  
Sicong Ma ◽  
Yang Chen ◽  
Kaizhuang Xu ◽  
...  
Keyword(s):  
High Activity ◽  
Methanol Synthesis ◽  
Active Sites ◽  
High Performance ◽  
Heterogeneous Catalysts ◽  
Side Reaction ◽  
Catalytic Process ◽  
Single Atom ◽  
The Real ◽  
Cu Catalyst

Abstract Cu-based catalysts have attracted much interest in CO2 hydrogenation to methanol because of their high activity. However, the effect of interface, coordination structure, particle size and other underlying factors existed in heterogeneous catalysts render to complex active sites on its surface, therefore it is difficult to study the real active sites for methanol synthesis. Here, we report a novel Cu-based catalyst with isolated Cu active sites (Cu1-O3 units) for highly selective hydrogenating CO2 to methanol at low temperature (100% selectivity for methanol at 180 oC). Experimental and theoretical results reveal that the single-atom Cu-Zr catalyst with Cu1-O3 units is only contributed to synthesize methanol at 180 oC, but the Cu clusters or nanoparticles with Cu-Cu or Cu-O-Cu active sites will promote the process of reverse water gas shift (RWGS) side reaction to form undesirable byproducts CO. Furthermore, the Cu1-O3 units with tetrahedral structure could gradually migrate to the catalyst surface for accelerating CO2 hydrogenation reaction during catalytic process. The high activity isolated Cu-based catalyst with legible structure will be helpful to understand the real active sites of Cu-based catalysts for methanol synthesis from CO2 hydrogenation, thereby guiding further design the Cu catalyst with high performance to meet the industrial demand, at the same time as extending the horizontal of single atom catalyst for application in the thermal catalytic process of CO2 hydrogenation.

Highly dispersed Cu catalyst based on the layer confinement effect of Cu/Zn/Ga-LDH for methanol synthesis

2021 ◽  
Vol 516 ◽  
pp. 111984
Author(s):  
Huayan Zheng ◽  
Nilesh Narkhede ◽  
Guoqiang Zhang ◽  
Huacheng Zhang ◽  
Lina Ma ◽  
...  
Keyword(s):  
Methanol Synthesis ◽  
Confinement Effect ◽  
Highly Dispersed ◽  
Cu Catalyst
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