scholarly journals On the Effect of Cobalt Promotion over Ni/CeO2 Catalyst for CO2 Thermal and Plasma Assisted Methanation

Catalysts ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 36
Author(s):  
Golshid Hasrack ◽  
Maria Carmen Bacariza ◽  
Carlos Henriques ◽  
Patrick Da Costa
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Thermal Plasma ◽  
Value Added ◽  
Thermal Reaction ◽  
Synthetic Fuels ◽  
Co2 Methanation ◽  
Promotion Effect ◽  
Carbon Dioxide Hydrogenation ◽  
Non Thermal Plasma

In recent years, carbon dioxide hydrogenation leading to synthetic fuels and value-added molecules has been proposed as a promising technology for stabilizing anthropogenic greenhouse gas emissions. Methanation or Sabatier are possible reactions to valorize the CO2. In the present work, thermal CO2 methanation and non-thermal plasma (NTP)-assisted CO2 methanation was performed over 15Ni/CeO2 promoted with 1 and 5 wt% of cobalt. The promotion effect of cobalt is proven both for plasma and thermal reaction and can mostly be linked with the basic properties of the materials.

Design of a Synthetic Enzyme Cascade for the in vitro Fixation of a C1 Carbon Source to a Functional C4 Sugar

2021 ◽  
Author(s):  
Samed Güner ◽  
Vanessa Wegat ◽  
André Pick ◽  
Volker Sieber
Keyword(s):  
Carbon Dioxide ◽  
Carbon Source ◽  
Greenhouse Gas ◽  
Value Added ◽  
Waste Stream ◽  
Enzyme Cascade ◽  
Sustainable Future ◽  
Value Added Products

Realizing a sustainable future requires intensifying the waste stream conversion, such as converting the greenhouse gas carbon dioxide into value-added products. In this paper, we focus on utilizing formaldehyde as...

scholarly journals Positional effects of second-sphere amide pendants on electrochemical CO2 reduction catalyzed by iron porphyrins

2018 ◽  
Vol 9 (11) ◽  
pp. 2952-2960 ◽  
Author(s):  
Eva M. Nichols ◽  
Jeffrey S. Derrick ◽  
Sepand K. Nistanaki ◽  
Peter T. Smith ◽  
Christopher J. Chang
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Electrochemical Reduction ◽  
Energy Input ◽  
Sustainable Energy ◽  
Co2 Reduction ◽  
Value Added ◽  
Iron Porphyrins ◽  
Electrochemical Co2 Reduction ◽  
Positional Effects

The development of catalysts for electrochemical reduction of carbon dioxide offers an attractive approach to transforming this greenhouse gas into value-added carbon products with sustainable energy input.

scholarly journals Promoting CO2 methanation via ligand-stabilized metal oxide clusters as hydrogen-donating motifs

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuhang Li ◽  
Aoni Xu ◽  
Yanwei Lum ◽  
Xue Wang ◽  
Sung-Fu Hung ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Metal Oxide ◽  
Active Sites ◽  
Density Functional ◽  
Copper Catalyst ◽  
Value Added ◽  
Adsorbed Hydrogen ◽  
Co2 Methanation ◽  
Faradaic Efficiency ◽  
Metal Oxide Clusters

AbstractElectroreduction uses renewable energy to upgrade carbon dioxide to value-added chemicals and fuels. Renewable methane synthesized using such a route stands to be readily deployed using existing infrastructure for the distribution and utilization of natural gas. Here we design a suite of ligand-stabilized metal oxide clusters and find that these modulate carbon dioxide reduction pathways on a copper catalyst, enabling thereby a record activity for methane electroproduction. Density functional theory calculations show adsorbed hydrogen donation from clusters to copper active sites for the *CO hydrogenation pathway towards *CHO. We promote this effect via control over cluster size and composition and demonstrate the effect on metal oxides including cobalt(II), molybdenum(VI), tungsten(VI), nickel(II) and palladium(II) oxides. We report a carbon dioxide-to-methane faradaic efficiency of 60% at a partial current density to methane of 135 milliampere per square centimetre. We showcase operation over 18 h that retains a faradaic efficiency exceeding 55%.

Non-thermal plasma induced photocatalytic conversion of light alkanes into high value-added liquid chemicals under near ambient conditions

2020 ◽  
Vol 56 (39) ◽  
pp. 5263-5266
Author(s):  
Aiguo wang ◽  
Shijun Meng ◽  
Hua Song
Keyword(s):  
Thermal Plasma ◽  
Value Added ◽  
Liquid Fuels ◽  
Ambient Conditions ◽  
Light Alkanes ◽  
Non Thermal Plasma

Non-thermal plasma induced photocatalytic transformation of light alkanes into high value-added liquid fuels or chemicals over Ti–Ga/UZSM-5 under near ambient conditions.

Remarkable promotion effect of lauric acid on Mn-MIL-100 for non-thermal plasma-catalytic decomposition of toluene

2020 ◽  
Vol 503 ◽  
pp. 144290 ◽  
Author(s):  
Huang Huang ◽  
Changwei Chen ◽  
Rui Yang ◽  
Yanke Yu ◽  
Reem Albilali ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Lauric Acid ◽  
Catalytic Decomposition ◽  
Promotion Effect ◽  
Non Thermal Plasma

scholarly journals Carboxylases in Natural and Synthetic Microbial Pathways

2011 ◽  
Vol 77 (24) ◽  
pp. 8466-8477 ◽  
Author(s):  
Tobias J. Erb
Keyword(s):  
Carbon Dioxide ◽  
Synthetic Biology ◽  
Carbon Cycle ◽  
Greenhouse Gas ◽  
Inorganic Carbon ◽  
Carbon Assimilation ◽  
Value Added ◽  
Global Carbon Cycle ◽  
Global Carbon ◽  
Novel Antibiotics

ABSTRACTCarboxylases are among the most important enzymes in the biosphere, because they catalyze a key reaction in the global carbon cycle: the fixation of inorganic carbon (CO2). This minireview discusses the physiological roles of carboxylases in different microbial pathways that range from autotrophy, carbon assimilation, and anaplerosis to biosynthetic and redox-balancing functions. In addition, the current and possible future uses of carboxylation reactions in synthetic biology are discussed. Such uses include the possible transformation of the greenhouse gas carbon dioxide into value-added compounds and the production of novel antibiotics.

CuAg nanoparticles/carbon aerogel for electrochemical CO2 reduction

2021 ◽  
Author(s):  
Wenbo Wang ◽  
Runqing Lu ◽  
Xin-Xin Xiao ◽  
Shanhe Gong ◽  
Daniel Kobina Sam ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Co2 Reduction ◽  
Value Added ◽  
Electrical Energy ◽  
Carbon Aerogel ◽  
Carbon Dioxide Reduction ◽  
Reduction Reaction ◽  
Electrochemical Co2 Reduction ◽  
Value Added Products

Electrochemical carbon dioxide reduction reaction (eCO2RR) is a promising technology that uses electrical energy to catalytically reduce the greenhouse gas-CO2, which can convert CO2 into high value-added products such as...

Discharge of Carbon Dioxide Using a Non-Thermal Plasma Reactor

2013 ◽  
Author(s):  
Onur Taylan ◽  
Halil Berberoglu
Keyword(s):  
Carbon Dioxide ◽  
Thermal Plasma ◽  
Plasma Reactor ◽  
Dielectric Materials ◽  
Gas Discharge ◽  
Aluminum Electrode ◽  
Plasma Reactors ◽  
Dbd Plasma ◽  
Power Requirement ◽  
Non Thermal Plasma

This paper reports a numerical study on the discharge of carbon dioxide using a non-thermal dielectric barrier discharge (DBD) plasma reactor at ambient conditions. DBD plasma reactors have been used for various applications due to their ease of production, process control, operation at different conditions. The applications of DBD plasma reactors include discharge of gases. Carbon dioxide is a greenhouse gas formed as a byproduct of fossil fuel combustion. Use of DBD non-thermal plasma reactor can be a promising technology for carbon dioxide mitigation due to its operation at low temperatures, lack of need for catalysts, and flexibility in controlling the products generated. In this study, a tubular DBD non-thermal plasma reactor was modeled with different electrode materials separated by different dielectric materials. The aim was to provide guidelines for the design and material selection for optimizing DBD plasma reactors for CO2 discharge. A parametric set of simulations was performed using a finite element solver to investigate how electrode and dielectric materials affect the discharge volume of CO2 and power requirement of the non-thermal plasma discharge of CO2. The results showed that electrode material did not affect the discharge or the power requirement. However, dielectric material with higher permittivity or lower conductivity increased the gas discharge and power requirement. Among the analyzed materials, aluminum electrode and mica tube were suggested based on the simulation results for the maximum gas discharge and low power requirement.

scholarly journals Coupling non-thermal plasma with Ni catalysts supported on BETA zeolite for catalytic CO2 methanation

2019 ◽  
Vol 9 (15) ◽  
pp. 4135-4145 ◽  
Author(s):  
Huanhao Chen ◽  
Yibing Mu ◽  
Yan Shao ◽  
Sarayute Chansai ◽  
Shaojun Xu ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Reaction Mechanisms ◽  
Beta Zeolite ◽  
Ni Catalysts ◽  
Co2 Methanation ◽  
Plasma Activation ◽  
Non Thermal Plasma

Non-thermal plasma activation promotes CO2 conversion over Ni catalysts supported on BETA zeolite via multiple reaction mechanisms.

scholarly journals Understanding carbon dioxide activation and carbon–carbon coupling over nickel

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Charlotte Vogt ◽  
Matteo Monai ◽  
Ellen B. Sterk ◽  
Jonas Palle ◽  
Angela E. M. Melcherts ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Value Added ◽  
Nickel Particle ◽  
Theoretical Knowledge ◽  
Particle Sizes ◽  
Theoretical Understanding ◽  
Carbon Dioxide Hydrogenation ◽  
Carbon Dioxide Activation ◽  
Power To Gas ◽  
Value Added Products

AbstractCarbon dioxide is a desired feedstock for platform molecules, such as carbon monoxide or higher hydrocarbons, from which we will be able to make many different useful, value-added chemicals. Its catalytic hydrogenation over abundant metals requires the amalgamation of theoretical knowledge with materials design. Here we leverage a theoretical understanding of structure sensitivity, along with a library of different supports, to tune the selectivity of methanation in the Power-to-Gas concept over nickel. For example, we show that carbon dioxide hydrogenation over nickel can and does form propane, and that activity and selectivity can be tuned by supporting different nickel particle sizes on various oxides. This theoretical and experimental toolbox is not only useful for the highly selective production of methane, but also provides new insights for carbon dioxide activation and subsequent carbon–carbon coupling towards value-added products thereby reducing the deleterious effects of this environmentally harmful molecule.

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