Ultrastable Cu Catalyst for CO2 Electroreduction to Multicarbon Liquid Fuels by Tuning C−C Coupling with CuTi Subsurface

2021 ◽  
Author(s):  
Fei Hu ◽  
Li Yang ◽  
Yawen Jiang ◽  
Chongxiong Duan ◽  
Xiaonong Wang ◽  
...  
Keyword(s):  
Liquid Fuels ◽  
Co2 Electroreduction ◽  
Cu Catalyst

Ultrastable Cu Catalyst for CO2 Electroreduction to Multicarbon Liquid Fuels by Tuning C−C Coupling with CuTi Subsurface

2021 ◽  
Author(s):  
Fei Hu ◽  
Li Yang ◽  
Yawen Jiang ◽  
Chongxiong Duan ◽  
Xiaonong Wang ◽  
...  
Keyword(s):  
Liquid Fuels ◽  
Co2 Electroreduction ◽  
Cu Catalyst

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.

Intermediate enrichment effect of porous Cu catalyst for CO2 electroreduction to C2 fuels

2021 ◽  
Vol 388 ◽  
pp. 138552
Author(s):  
Bao Liu ◽  
Chao Cai ◽  
Baopeng Yang ◽  
Kejun Chen ◽  
Yan Long ◽  
...  
Keyword(s):  
Co2 Electroreduction ◽  
Cu Catalyst

scholarly journals Plasma-Modified Dendritic Cu Catalyst for CO2 Electroreduction

ACS Catalysis ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 5496-5502 ◽  
Author(s):  
Fabian Scholten ◽  
Ilya Sinev ◽  
Miguel Bernal ◽  
Beatriz Roldan Cuenya
Keyword(s):  
Co2 Electroreduction ◽  
Cu Catalyst

scholarly journals Direct and continuous generation of pure acetic acid solutions via electrocatalytic carbon monoxide reduction

2020 ◽  
Vol 118 (2) ◽  
pp. e2010868118
Author(s):  
Peng Zhu ◽  
Chuan Xia ◽  
Chun-Yen Liu ◽  
Kun Jiang ◽  
Guanhui Gao ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Density Functional ◽  
Liquid Electrolyte ◽  
Liquid Fuels ◽  
Acid Solutions ◽  
Faradaic Efficiency ◽  
Continuous Generation ◽  
Liquid Products ◽  
Cu Catalyst ◽  
Co Reduction

Electrochemical CO2 or CO reduction to high-value C2+ liquid fuels is desirable, but its practical application is challenged by impurities from cogenerated liquid products and solutes in liquid electrolytes, which necessitates cost- and energy-intensive downstream separation processes. By coupling rational designs in a Cu catalyst and porous solid electrolyte (PSE) reactor, here we demonstrate a direct and continuous generation of pure acetic acid solutions via electrochemical CO reduction. With optimized edge-to-surface ratio, the Cu nanocube catalyst presents an unprecedented acetate performance in neutral pH with other liquid products greatly suppressed, delivering a maximal acetate Faradaic efficiency of 43%, partial current of 200 mA⋅cm−2, ultrahigh relative purity of up to 98 wt%, and excellent stability of over 150 h continuous operation. Density functional theory simulations reveal the role of stepped sites along the cube edge in promoting the acetate pathway. Additionally, a PSE layer, other than a conventional liquid electrolyte, was designed to separate cathode and anode for efficient ion conductions, while not introducing any impurity ions into generated liquid fuels. Pure acetic acid solutions, with concentrations up to 2 wt% (0.33 M), can be continuously produced by employing the acetate-selective Cu catalyst in our PSE reactor.

CO2 Electroreduction Reaction on Pt-Cu Catalyst and Its in-Situ Analysis By Infrared Spectroscopy

2020 ◽  
Vol MA2020-02 (63) ◽  
pp. 3216-3216
Author(s):  
Hiroki Takahashi ◽  
Keisuke Ohkubo ◽  
Masami Taguchi
Keyword(s):  
Infrared Spectroscopy ◽  
In Situ Analysis ◽  
Co2 Electroreduction ◽  
Cu Catalyst

scholarly journals RETRACTED ARTICLE: An overview of CO2 electroreduction into hydrocarbons and liquid fuels on nanostructured copper catalysts

2016 ◽  
Vol 9 (3) ◽  
pp. 166-178 ◽  
Author(s):  
Aumber Abbas ◽  
Mudaser Ullah ◽  
Qasim Ali ◽  
Imran Zahid ◽  
Saleem Abbas ◽  
...  
Keyword(s):  
Copper Catalysts ◽  
Liquid Fuels ◽  
Co2 Electroreduction ◽  
Retracted Article ◽  
Nanostructured Copper

High-purity and high-concentration liquid fuels through CO2 electroreduction

2021 ◽  
Vol 4 (11) ◽  
pp. 943-951
Author(s):  
Peng Zhu ◽  
Haotian Wang
Keyword(s):  
High Purity ◽  
Liquid Fuels ◽  
High Concentration ◽  
Co2 Electroreduction

Microscopic versus process parameters in heavy-oil upgrading

1992 ◽  
Vol 50 (1) ◽  
pp. 366-367
Author(s):  
V.A. Munoz ◽  
R.J. Mikula ◽  
C. Payette ◽  
W.W. Lam
Keyword(s):  
Molecular Weight ◽  
Liquid Fuels ◽  
Chemical Components ◽  
Heavy Oils ◽  
Synthetic Fuels ◽  
High Hydrogen ◽  
Optical Texture ◽  
Polar Groups ◽  
Anisotropic Character ◽  
Planar Molecules

The transformation of high molecular weight components present in heavy oils into useable liquid fuels requires their decomposition by means of a variety of processes. The low molecular weight species produced recombine under controlled conditions to generate synthetic fuels. However, an important fraction undergo further recombination into higher molecular weight components, leading to the formation of coke. The optical texture of the coke can be related to its originating components. Those with high sulfur and oxygen content tend to produce cokes with small optical texture or fine mosaic, whereas compounds with relatively high hydrogen content are likely to produce large optical texture or domains. In addition, the structure of the parent chemical components, planar or nonplanar, determines the isotropic or anisotropic character of the coke. Planar molecules have a tendency to align in an approximately parallel arrangement to initiate the formation of the nematic mesophase leading to the formation of anisotropic coke. Nonplanar highly alkylated compounds and/or those rich in polar groups form isotropic coke. The aliphatic branches produce steric hindrance to alignment, whereas the polar groups participate in cross-linking reactions.

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

Sign in / Sign up

Export Citation Format

Share Document