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

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

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

ANIPE-Cu Catalyst Enables Highly Enantioselective Markovnikov Hydroboration of α-Olefins

Synlett ◽  
2020 ◽  
Author(s):  
Shi-Liang Shi ◽  
Yuan Cai
Keyword(s):  
Petrochemical Industry ◽  
Future Directions ◽  
Asymmetric Hydroboration ◽  
Terminal Alkenes ◽  
Cu Catalyst

AbstractAsymmetric hydroboration of simple and unactivated terminal alkenes (α-olefins), feedstock chemicals derived from the petrochemical industry, has not been efficiently realized for past decades. Using a bulky ANIPE ligand, we achieved a rare example of highly enantioselective copper-catalyzed Markovnikov hydroboration of α-olefins. The chiral secondary alkylboronic ester products were obtained in moderate to good yields and regioselectivities with excellent enantioselectivities.1 Introduction2 Conditions Optimization3 Substrate Scope4 Application5 Mechanistic Discussion6 Conclusions and Future Directions

Effect of support plates on the micro-drilled hole form quality in CFRP laminates

2019 ◽  
Vol 61 (5) ◽  
pp. 467-476 ◽  
Author(s):  
Ahmet Dogrusadik ◽  
Aykut Kentli
Keyword(s):  
Cfrp Laminates ◽  
Form Quality ◽  
Effect Of Support

scholarly journals Production of Fuels and Chemicals from a CO2/H2 Mixture

Reactions ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 130-146
Author(s):  
Yali Yao ◽  
Baraka Celestin Sempuga ◽  
Xinying Liu ◽  
Diane Hildebrandt
Keyword(s):  
Co2 Hydrogenation ◽  
Water Gas Shift ◽  
Liquid Fuels ◽  
Saturated Hydrocarbons ◽  
Reverse Water Gas Shift ◽  
Cu Catalyst ◽  
In Series ◽  
Fuels And Chemicals ◽  
Water Gas ◽  
Aspen Simulation

In order to explore co-production alternatives, a once-through process for CO2 hydrogenation to chemicals and liquid fuels was investigated experimentally. In this approach, two different catalysts were considered; the first was a Cu-based catalyst that hydrogenates CO2 to methanol and CO and the second a Fisher–Tropsch (FT) Co-based catalyst. The two catalysts were loaded into different reactors and were initially operated separately. The experimental results show that: (1) the Cu catalyst was very active in both the methanol synthesis and reverse-water gas shift (R-WGS) reactions and these two reactions were restricted by thermodynamic equilibrium; this was also supported by an Aspen plus simulation of an (equilibrium) Gibbs reactor. The Aspen simulation results also indicated that the reactor can be operated adiabatically under certain conditions, given that the methanol reaction is exothermic and R-WGS is endothermic. (2) the FT catalyst produced mainly CH4 and short chain saturated hydrocarbons when the feed was CO2/H2. When the two reactors were coupled in series and the presence of CO in the tail gas from the first reactor (loaded with Cu catalyst) significantly improves the FT product selectivity toward higher carbon hydrocarbons in the second reactor compared to the standalone FT reactor with only CO2/H2 in the feed.

Methanol Synthesis via Hydrogenation of Hybrid CO2‐CO Feeds

ChemSusChem ◽  
2021 ◽  
Author(s):  
Thaylan P Araújo ◽  
Adrian H Hergesell ◽  
Dario Faust-Akl ◽  
Simon Büchele ◽  
Joseph A Stewart ◽  
...  
Keyword(s):  
Methanol Synthesis
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