Research Progress on Photocatalytic Activation of Methane to Methanol

2021 ◽  
Author(s):  
Yu dong Tian ◽  
Lingyu Piao ◽  
Xiaobo Chen
Keyword(s):  
Thermodynamic Equilibrium ◽  
Research Progress ◽  
Conversion Of Methane ◽  
Thermocatalytic Conversion

The conversion of methane (CH4) to methanol (CH3OH) has attracted much attention in catalysis. However, the traditional thermocatalytic conversion of CH4 to CH3OH is largely restricted by the thermodynamic equilibrium...

scholarly journals Unraveling the Activity of Iron Carbide Clusters Embedded in Silica for Thermocatalytic Conversion of Methane

2020 ◽  
Author(s):  
Gopal K. Dixit ◽  
Manish Kumar ◽  
Ankita Katiyar ◽  
Antonius P. J. Jansen ◽  
Alexander van Bavel ◽  
...  
Keyword(s):  
Partial Pressure ◽  
Density Functional ◽  
High Selectivity ◽  
Iron Carbide ◽  
Methyl Radical ◽  
Reaction Conditions ◽  
Silica Substrate ◽  
Rate Determining Step ◽  
Conversion Of Methane ◽  
Thermocatalytic Conversion

<p>Isolated Fe-sites on silica substrate have recently been reported for direct and non-oxidative</p> <p>conversion of gaseous methane with high selectivity. The activated catalyst was proposed to be</p> <p>FeC2 cluster embedded in silica. Using a combination of density-functional theoretic methods</p> <p>and micro-kinetic modeling, we show that under the same reaction conditions (1223 K , 1 atm)</p> <p>FeC2 sites convert to FeC3 and the latter is instead responsible for the observed activity. We</p> <p>investigate the detailed mechanism of conversion of methane to methyl radical and hydrogen</p> <p>on FeC3@SiO2 under different conditions of methane partial pressure. We find that methyl</p> <p>radical evolution is the rate-determining step for the overall conversion. Our calculations also</p> <p>indicate that the conversion of embedded FeC3 to FeC4 competes with methyl radical evolution</p> <p>from the active catalyst. However, due to the higher stability of FeC3 sites, we anticipate that</p> <p>formation of higher carbides can be inhibited by controlling the hydrogen partial pressure.</p>

Unraveling the activity of iron carbide clusters embedded in silica for thermocatalytic conversion of methane

2021 ◽  
Author(s):  
Gopal Krishna Dixit ◽  
Manish Kumar ◽  
Ankita Katiyar ◽  
Antonius P.J. Jansen ◽  
Sander van Bavel ◽  
...  
Keyword(s):  
High Selectivity ◽  
Iron Carbide ◽  
Silica Substrate ◽  
Conversion Of Methane ◽  
Fe Sites ◽  
Thermocatalytic Conversion

Isolated Fe-sites on silica substrate have recently been reported for direct and non-oxidative conversionof gaseous methane with high selectivity. The activated catalyst was proposed to be FeC2 clusterembedded in silica....

scholarly journals Unraveling the Activity of Iron Carbide Clusters Embedded in Silica for Thermocatalytic Conversion of Methane

2020 ◽  
Author(s):  
Gopal K. Dixit ◽  
Manish Kumar ◽  
Ankita Katiyar ◽  
Antonius P. J. Jansen ◽  
Alexander van Bavel ◽  
...  
Keyword(s):  
Partial Pressure ◽  
Density Functional ◽  
High Selectivity ◽  
Iron Carbide ◽  
Methyl Radical ◽  
Reaction Conditions ◽  
Silica Substrate ◽  
Rate Determining Step ◽  
Conversion Of Methane ◽  
Thermocatalytic Conversion

<p>Isolated Fe-sites on silica substrate have recently been reported for direct and non-oxidative</p> <p>conversion of gaseous methane with high selectivity. The activated catalyst was proposed to be</p> <p>FeC2 cluster embedded in silica. Using a combination of density-functional theoretic methods</p> <p>and micro-kinetic modeling, we show that under the same reaction conditions (1223 K , 1 atm)</p> <p>FeC2 sites convert to FeC3 and the latter is instead responsible for the observed activity. We</p> <p>investigate the detailed mechanism of conversion of methane to methyl radical and hydrogen</p> <p>on FeC3@SiO2 under different conditions of methane partial pressure. We find that methyl</p> <p>radical evolution is the rate-determining step for the overall conversion. Our calculations also</p> <p>indicate that the conversion of embedded FeC3 to FeC4 competes with methyl radical evolution</p> <p>from the active catalyst. However, due to the higher stability of FeC3 sites, we anticipate that</p> <p>formation of higher carbides can be inhibited by controlling the hydrogen partial pressure.</p>

scholarly journals Research Progress on the Photocatalytic Conversion of Methane and Methanol

2019 ◽  
Vol 35 (9) ◽  
pp. 923-939 ◽  
Author(s):  
Shuyi ZHANG ◽  
◽  
Jingxian BAO ◽  
Bo WU ◽  
Liangshu ZHONG ◽  
...  
Keyword(s):  
Research Progress ◽  
Conversion Of Methane

Photocatalytic and Thermocatalytic Conversion of Methane

Solar RRL ◽  
2021 ◽  
pp. 2000596
Author(s):  
Zhonghua Li ◽  
Zhiguo Yi ◽  
Zhaosheng Li ◽  
Zhigang Zou
Keyword(s):  
Conversion Of Methane ◽  
Thermocatalytic Conversion

Which Data to Meta-Analyze, and How?

2019 ◽  
Vol 227 (1) ◽  
pp. 64-82 ◽  
Author(s):  
Martin Voracek ◽  
Michael Kossmeier ◽  
Ulrich S. Tran
Keyword(s):  
Empirical Research ◽  
Meta Analysis ◽  
Curve Analysis ◽  
Research Progress ◽  
Primary Data ◽  
Statistical Procedures ◽  
Graphical Displays ◽  
Primary Data Analysis ◽  
Meta Analyses ◽  
Data Analytic

Abstract. Which data to analyze, and how, are fundamental questions of all empirical research. As there are always numerous flexibilities in data-analytic decisions (a “garden of forking paths”), this poses perennial problems to all empirical research. Specification-curve analysis and multiverse analysis have recently been proposed as solutions to these issues. Building on the structural analogies between primary data analysis and meta-analysis, we transform and adapt these approaches to the meta-analytic level, in tandem with combinatorial meta-analysis. We explain the rationale of this idea, suggest descriptive and inferential statistical procedures, as well as graphical displays, provide code for meta-analytic practitioners to generate and use these, and present a fully worked real example from digit ratio (2D:4D) research, totaling 1,592 meta-analytic specifications. Specification-curve and multiverse meta-analysis holds promise to resolve conflicting meta-analyses, contested evidence, controversial empirical literatures, and polarized research, and to mitigate the associated detrimental effects of these phenomena on research progress.

Psychoanalytic Research: Progress and Process

2002 ◽  
Author(s):  
Raymond A. Levy ◽  
Stuart Ablon
Keyword(s):  
Research Progress
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