scholarly journals Ultradispersed Mo/TiO2 catalysts for CO2 hydrogenation to methanol

2021 ◽  
Author(s):  
Thomas Len ◽  
Mounib Bahri ◽  
Ovidiu Ersen ◽  
Yaya Lefkir ◽  
Luis Cardenas ◽  
...  
Keyword(s):  
Gas Phase ◽  
Co2 Hydrogenation ◽  
Hydrogenation Of Co2 ◽  
Crucial Effect ◽  
Effect Of The Support

Mo/TiO2 catalysts with atomic dispersion of molybdenum appear active and stable in the gas-phase hydrogenation of CO2. The comparison between various titania materials shows a crucial effect of the support...

scholarly journals Hydrogenation of CO2 Promoted by Silicon-Activated H2S: Origin and Implications

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 50
Author(s):  
Xing Liu
Keyword(s):  
Low Temperatures ◽  
Underlying Mechanism ◽  
Reactive Species ◽  
Co2 Hydrogenation ◽  
Usual Method ◽  
Title Reaction ◽  
Hydrogenation Of Co2 ◽  
Hydrogenation Reactions

Unlike the usual method of COx (x = 1, 2) hydrogenation using H2 directly, H2S and HSiSH (silicon-activated H2S) were selected as alternative hydrogen sources in this study for the COx hydrogenation reactions. Our results suggest that it is kinetically infeasible for hydrogen in the form of H2S to transfer to COx at low temperatures. However, when HSiSH is employed instead, the title reaction can be achieved. For this approach, the activation of CO2 is initiated by its interaction with the HSiSH molecule, a reactive species with both a hydridic Hδ− and protonic Hδ+. These active hydrogens are responsible for the successive C-end and O-end activations of CO2 and hence the final product (HCOOH). This finding represents a good example of an indirect hydrogen source used in CO2 hydrogenation through reactivity tuned by silicon incorporation, and thus the underlying mechanism will be valuable for the design of similar reactions.

CO2 hydrogenation on Fe-based catalysts doped with potassium in gas phase and under supercritical conditions

2019 ◽  
Vol 29 (4) ◽  
pp. 382-384 ◽  
Author(s):  
Yana A. Pokusaeva ◽  
Aleksey E. Koklin ◽  
Valery V. Lunin ◽  
Victor I. Bogdan
Keyword(s):  
Gas Phase ◽  
Co2 Hydrogenation ◽  
Supercritical Conditions

How to make an efficient gas-phase heterogeneous CO2 hydrogenation photocatalyst

2020 ◽  
Vol 13 (9) ◽  
pp. 3054-3063 ◽  
Author(s):  
Tingjiang Yan ◽  
Na Li ◽  
Linlin Wang ◽  
Qin Liu ◽  
Abdinoor Jelle ◽  
...  
Keyword(s):  
Gas Phase ◽  
Photocatalytic Performance ◽  
Co2 Hydrogenation ◽  
Cubic Phases

rh/c-In2O3−x(OH)y with precisely adjustable fractions of rhombohedral and cubic phases were synthesized and enabled boosting photocatalytic performance toward CO2 hydrogenation.

In-Co-Zn/C-N catalysts derived from ZIFs for selective hydrogenation of CO2 into methanol

2021 ◽  
Author(s):  
Bing Liu ◽  
Tingfeng Fang ◽  
Yumei He
Keyword(s):  
Methanol Synthesis ◽  
Selective Hydrogenation ◽  
Hydrogenation Reaction ◽  
Co2 Hydrogenation ◽  
Great Promise ◽  
Co2 Conversion ◽  
Hydrogenation Of Co2 ◽  
Low Co2

Recently, In2O3-based catalysts have shown great promise in methanol synthesis from CO2 hydrogenation reaction due to the high methanol selectivity. However, the low CO2 conversion restrict their application. Here, we...

Mechanistic insights into catalytic CO2 hydrogenation using Mn(i)-complexes with pendant oxygen ligands

2018 ◽  
Vol 8 (12) ◽  
pp. 3034-3043 ◽  
Author(s):  
Shubhajit Das ◽  
Swapan K. Pati
Keyword(s):  
Formic Acid ◽  
Co2 Hydrogenation ◽  
Hydrogenation Of Co2

Hydrogenation of CO2 to formic acid catalysed by Mn(i)-complexes with pendant oxygen ligands.

scholarly journals LED-driven controlled deposition of Ni onto TiO2 for the visible-light expanded conversion of carbon dioxide into C1-C2 alkanes

2021 ◽  
Author(s):  
Arturo Sanz-Marco ◽  
José L Hueso ◽  
Victor Sebastian ◽  
David Nielsen ◽  
Susanne Mossin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Visible Light ◽  
Gas Phase ◽  
White Light ◽  
Ni Nanoparticles ◽  
Hydrogenation Of Co2 ◽  
Controlled Deposition ◽  
Supported Ni ◽  
Led Irradiation

Photocatalytic gas-phase hydrogenation of CO2 into alkanes was achieved over TiO2-supported Ni nanoparticles under LED irradiation at 365 nm, 460 nm and white light. Photocatalysts were prepared using the photo-assisted...

First-principles microkinetic simulations revealing the scaling relations and structure sensitivity of CO2 hydrogenation to C1 & C2 oxygenates on Pd surfaces

2021 ◽  
Author(s):  
Jun Ke ◽  
Yangdong Wang ◽  
Chuan-Ming Wang
Keyword(s):  
First Principles ◽  
Co2 Hydrogenation ◽  
Structure Sensitivity ◽  
Scaling Relations ◽  
Hydrogenation Of Co2

Hydrogenation of CO2 to methanol, ethanol and other oxygenates is an emerging attractive process in C1 chemistry but remains a great challenge not least because of the intrinsic inertness of...

Residual Gas Reactions in the Electron Microscope: I. Qualitative Observations on the Water Gas Reaction

1968 ◽  
Vol 26 ◽  
pp. 292-293
Author(s):  
Richard E. Hartman ◽  
Roberta S. Hartman ◽  
Peter L. Ramos
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Gas Phase ◽  
Absolute Temperature ◽  
Residual Gas ◽  
Gas Reactions ◽  
Image Position ◽  
The Right ◽  
Water Gas ◽  
Thinning Rate

The action of water and the electron beam on organic specimens in the electron microscope results in the removal of oxidizable material (primarily hydrogen and carbon) by reactions similar to the water gas reaction .which has the form:The energy required to force the reaction to the right is supplied by the interaction of the electron beam with the specimen.The mass of water striking the specimen is given by:where u = gH2O/cm2 sec, PH2O = partial pressure of water in Torr, & T = absolute temperature of the gas phase. If it is assumed that mass is removed from the specimen by a reaction approximated by (1) and that the specimen is uniformly thinned by the reaction, then the thinning rate in A/ min iswhere x = thickness of the specimen in A, t = time in minutes, & E = efficiency (the fraction of the water striking the specimen which reacts with it).

Sign in / Sign up

Export Citation Format

Share Document