Carbon dioxide reduction on Ir(111): stable hydrocarbon surface species at near-ambient pressure

2016 ◽  
Vol 18 (9) ◽  
pp. 6763-6772 ◽  
Author(s):  
Manuel Corva ◽  
Zhijing Feng ◽  
Carlo Dri ◽  
Federico Salvador ◽  
Paolo Bertoch ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ambient Pressure ◽  
Carbon Dioxide Reduction ◽  
Hydrogenation Reaction ◽  
Surface Species ◽  
Carbon Dioxide Hydrogenation

Stable hydrocarbon surface species in the carbon dioxide hydrogenation reaction were identified on Ir(111) under near-ambient pressure conditions.

Bimetallic Ni-Mo Nitride as the Carbon Dioxide Hydrogenation Catalyst

2013 ◽  
Vol 872 ◽  
pp. 3-9 ◽  
Author(s):  
Denis V. Leybo ◽  
Natalia I. Kosova ◽  
Konstantin O. Chuprunov ◽  
Denis V. Kuznetsov ◽  
Irina A. Kurzina
Keyword(s):  
Electron Microscopy ◽  
Carbon Dioxide ◽  
Scanning Electron Microscopy ◽  
Contact Time ◽  
Nitrogen Adsorption ◽  
Hydrogenation Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carbon Dioxide Hydrogenation ◽  
Scanning Electron

The possibility of bimetallic Ni-Mo nitrides usage as the catalysts in carbon dioxide hydrogenation reaction was examined in this work. Powders were synthesized through thermo-programmed reduction of precursor, which was produced by evaporation of the metal-containing solution. Specimens were investigated by x-ray diffraction, thermogravimetry, low-temperature nitrogen adsorption and scanning electron microscopy. It is shown that final powders provide CO2 conversion of 29 % for contact time of 0.26 s.

scholarly journals Carbon Dioxide Hydrogenation by Means of Plasmonic Resonance Activation in Silica Aerogel Media

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2134 ◽  
Author(s):  
Sergio Muñoz ◽  
Alexander Navarrete ◽  
Ángel Martín ◽  
Roland Dittmeyer ◽  
M. Cocero
Keyword(s):  
Carbon Dioxide ◽  
Gas Phase ◽  
High Pressures ◽  
Copper Catalysts ◽  
Hydrogenation Reaction ◽  
Gas Phase Reactions ◽  
Conversion Rates ◽  
High Temperature Processes ◽  
Carbon Dioxide Hydrogenation ◽  
Reactor Temperature

Surface Plasmon Resonance can be used to activate zinc oxide/copper catalysts in order to perform the carbon dioxide hydrogenation reaction by means of light energy, avoiding high-temperature processes. The synthesis and impregnation methods have been designed to fill glass microreactors with ZnO/Cu nanoparticles supported on transparent silica aerogels to maximize the light absorbed by the catalyst. A LED device surrounding the glass microreactors provided white light to activate the catalyst homogeneously throughout the reactor. Temperature, pressure, amount of catalyst and gases flow were studied as possible variables to enhance the process trying to maximize CO2 conversion rates, achieving the best results working at high pressures. The use of transparent SiO2 Aerogels as supports for photocatalytic gas phase reactions even under high-pressure conditions is demonstrated.

Influence of intramolecular interactions on carbon dioxide gas adsorption capacity in Mesoporous Imine polymers

2018 ◽  
Author(s):  
Jaya Prakash Madda ◽  
Pilli Govindaiah ◽  
Sushant Kumar Jena ◽  
Sabbhavat Krishna ◽  
Rupak Kishor
Keyword(s):  
Carbon Dioxide ◽  
Adsorption Capacity ◽  
Density Functional ◽  
Gas Adsorption ◽  
Ambient Pressure ◽  
Condensation Reaction ◽  
Intramolecular Interactions ◽  
Carbon Dioxide Adsorption ◽  
Nitrogen Gas ◽  
Adsorption Characteristic

<p>Covalent organic Imine polymers with intrinsic meso-porosity were synthesized by condensation reaction between 4,4-diamino diphenyl methane and (para/meta/ortho)-phthaladehyde. Even though these polymers were synthesized from precursors of bis-bis covalent link mode, the bulk materials were micrometer size particles with intrinsic mesoporous enables nitrogen as well as carbon dioxide adsorption in the void spaces. These polymers were showed stability up to 260<sup>o</sup> centigrade. Nitrogen gas adsorption capacity up to 250 cc/g in the ambient pressure was observed with type III adsorption characteristic nature. Carbon dioxide adsorption experiments reveal the possible terminal amine functional group to carbamate with CO<sub>2</sub> gas molecule to the polymers. One of the imine polymers, COP-3 showed more carbon dioxide sorption capacity and isosteric heat of adsorption (Q<sub>st</sub>) than COP-1 and COP-2 at 273 K even though COP-3 had lower porosity for nitrogen gas than COP-1 and COP-2. We explained the trends in gas adsorption capacities and Qst values as a consequence of the intra molecular interactions confirmed by Density Functional Theory computational experiments on small molecular fragments.</p>

Fundamentals, On-Going Advances and Challenges of Electrochemical Carbon Dioxide Reduction

2021 ◽  
Author(s):  
Zongkui Kou ◽  
Xin Li ◽  
Tingting Wang ◽  
Yuanyuan Ma ◽  
Wenjie Zang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Reduction
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