ESR Study on the Nature of Active Site of Silica-supported Chromia in Propane Dehydrogenation Reaction

1999 ◽  
Vol 28 (8) ◽  
pp. 761-762
Author(s):  
Hu Zou ◽  
Yuwang Han ◽  
Weijie Ji ◽  
Jianyi Shen
Keyword(s):  
Active Site ◽  
Propane Dehydrogenation ◽  
Dehydrogenation Reaction

scholarly journals Strain in Silica-Supported Ga (III) Sites: Neither Too Much nor Too Little for Propane Dehydrogenation Catalytic Activity

2020 ◽  
Author(s):  
C. S. Praveen ◽  
A. P. Borosy ◽  
Christophe Copéret ◽  
Aleix Comas Vives
Keyword(s):  
Catalytic Activity ◽  
Propane Dehydrogenation ◽  
Intrinsic Activity ◽  
Dehydrogenation Reaction ◽  
The Road ◽  
Highly Active ◽  
Beta Hydride Elimination ◽  
Hydride Elimination ◽  
Single Site Catalysts ◽  
Highly Strained

<p>Well-defined Ga(III) sites on SiO<sub>2</sub> are highly active, selective, and stable catalysts in the propane dehydrogenation reaction. In this contribution, we evaluate the catalytic activity towards propane dehydrogenation of tri-coordinated and tetra-coordinated Ga(III) sites on SiO<sub>2</sub> by means of first principles calculations using realistic amorphous periodic SiO<sub>2</sub>models. We evaluated the three reaction steps in propane dehydrogenation, namely the C-H activation of propane to form propyl, the beta-hydride elimination transfer to form propene, and a Ga-hydride, and the H-H coupling to release H<sub>2</sub>, regenerating the initial Ga-O bond and closing the catalytic cycle. Our work shows how Brønsted-Evans-Polanyi relationships are followed for these three reaction steps on Ga(III) sites on SiO<sub>2</sub> and highlights the role of the strain of the reactive Ga-O pairs on such sites of realistic amorphous SiO<sub>2</sub> models. While highly strained sites are very reactive sites for the initial C-H activation, they are more difficult to regenerate. The corresponding less strained sites are not reactive enough, pointing to the need of a right balance in strain to be an effective site for propane dehydrogenation. Overall, our work provides an understanding of the intrinsic activity of acidic Ga single sites towards the propane dehydrogenation reaction and paves the road towards the design and prediction of better single-site catalysts on SiO<sub>2 </sub>for the propane dehydrogenation reaction.</p>

Analysis of the catalytic activity induction and deactivation of PtIn/Mg(Al)O catalysts for propane dehydrogenation reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64689-64695 ◽  
Author(s):  
Ke Xia ◽  
Wan-Zhong Lang ◽  
Pei-Pei Li ◽  
Xi Yan ◽  
Ya-Jun Guo
Keyword(s):  
Catalytic Activity ◽  
Propane Dehydrogenation ◽  
Dehydrogenation Reaction ◽  
Activity Induction

The catalytic activity induction and deactivation of PtIn/Mg(Al)O catalysts for propane dehydrogenation reaction are experimentally verified.

Propane Dehydrogenation Reaction in a High-Pressure Zeolite Membrane Reactor

2021 ◽  
Author(s):  
Shailesh Dangwal ◽  
Anil Ronte ◽  
Ghader Mahmodi ◽  
Payam Zarrintaj ◽  
Jong Suk Lee ◽  
...  
Keyword(s):  
High Pressure ◽  
Membrane Reactor ◽  
Zeolite Membrane ◽  
Propane Dehydrogenation ◽  
Dehydrogenation Reaction

Origin of the Robust Catalytic Performance of Nanodiamond–Graphene-Supported Pt Nanoparticles Used in the Propane Dehydrogenation Reaction

ACS Catalysis ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 3349-3355 ◽  
Author(s):  
Jie Liu ◽  
Yuanyuan Yue ◽  
Hongyang Liu ◽  
Zhijian Da ◽  
Changcheng Liu ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Catalytic Performance ◽  
Propane Dehydrogenation ◽  
Dehydrogenation Reaction

scholarly journals Identification of Pt-based catalysts for propane dehydrogenation via a probability analysis

2018 ◽  
Vol 9 (16) ◽  
pp. 3925-3931 ◽  
Author(s):  
Shenjun Zha ◽  
Guodong Sun ◽  
Tengfang Wu ◽  
Jiubing Zhao ◽  
Zhi-Jian Zhao ◽  
...  
Keyword(s):  
Probability Analysis ◽  
Propane Dehydrogenation ◽  
Dehydrogenation Reaction ◽  
Bimetallic Alloy ◽  
Computational Screening ◽  
Screening Study

A probability-based computational screening study has successfully identified an optimal bimetallic alloy (Pt3In) for the propane dehydrogenation reaction.

The influences of Mg/Al molar ratio on the properties of PtIn/Mg(Al)O- x catalysts for propane dehydrogenation reaction

2016 ◽  
Vol 284 ◽  
pp. 1068-1079 ◽  
Author(s):  
Ke Xia ◽  
Wan-Zhong Lang ◽  
Pei-Pei Li ◽  
Liu-Liu Long ◽  
Xi Yan ◽  
...  
Keyword(s):  
Propane Dehydrogenation ◽  
Molar Ratio ◽  
Dehydrogenation Reaction
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