The role of lattice oxygen in the oxidative dehydrogenation of ethane on alumina-supported vanadium oxide

2009 ◽  
Vol 11 (29) ◽  
pp. 6119 ◽  
Author(s):  
Arne Dinse ◽  
Reinhard Schomäcker ◽  
Alexis T. Bell
Keyword(s):  
Vanadium Oxide ◽  
Oxidative Dehydrogenation ◽  
Lattice Oxygen ◽  
Oxidative Dehydrogenation Of Ethane

scholarly journals Role of CO2 During Oxidative Dehydrogenation of Propane Over Bulk and Activated-Carbon Supported Cerium and Vanadium Based Catalysts

2021 ◽  
Author(s):  
Petar Djinović ◽  
Janez Zavašnik ◽  
Janvit Teržan ◽  
Ivan Jerman
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Oxidative Dehydrogenation ◽  
Active Phase ◽  
Lattice Oxygen ◽  
Chemisorbed Oxygen ◽  
Catalytically Active ◽  
Temperature Programmed ◽  
Propane Cracking

AbstractCeO2, V2O5 and CeVO4 were synthesised as bulk oxides, or deposited over activated carbon, characterized by XRD, HRTEM, CO2-TPO, C3H8-TPR, DRIFTS and Raman techniques and tested in propane oxidative dehydrogenation using CO2. Complete oxidation of propane to CO and CO2 is favoured by lattice oxygen of CeO2. The temperature programmed experiments show the ~ 4 nm AC supported CeO2 crystallites become more susceptible to reduction by propane, but less prone to re-oxidation with CO2 compared to bulk CeO2. Catalytic activity of CeVO4/AC catalysts requires a 1–2 nm amorphous CeVO4 layer. During reaction, the amorphous CeVO4 layer crystallises and several atomic layers of carbon cover the CeVO4 surface, resulting in deactivation. During reaction, V2O5 is irreversibly reduced to V2O3. The lattice oxygen in bulk V2O5 favours catalytic activity and propene selectivity. Bulk V2O3 promotes only propane cracking with no propene selectivity. In VOx/AC materials, vanadium carbide is the catalytically active phase. Propane dehydrogenation over VC proceeds via chemisorbed oxygen species originating from the dissociated CO2. Graphic Abstract

Role of TiO2 nanoparticle modification of Cr/MCM41 catalyst to enhance Cr-support interaction for oxidative dehydrogenation of ethane with carbon dioxide

2019 ◽  
Vol 584 ◽  
pp. 117114 ◽  
Author(s):  
Abdulrhman S. Al-Awadi ◽  
Ahmed Mohamed El-Toni ◽  
Saeed M. Al-Zahrani ◽  
Ahmed E. Abasaeed ◽  
Mansour Alhoshan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Oxidative Dehydrogenation ◽  
Tio2 Nanoparticle ◽  
Support Interaction ◽  
Oxidative Dehydrogenation Of Ethane

Enhanced ethylene productivity by the promotion of lattice oxygen in Ni Nb O/CexZr1−xO2 composite for oxidative dehydrogenation of ethane

2017 ◽  
Vol 95 ◽  
pp. 58-62 ◽  
Author(s):  
Minzae Lee ◽  
Yang Sik Yun ◽  
Jongbaek Sung ◽  
Joongwon Lee ◽  
Young-Jong Seo ◽  
...  
Keyword(s):  
Oxidative Dehydrogenation ◽  
Lattice Oxygen ◽  
Oxidative Dehydrogenation Of Ethane
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