Effects of Lattice O Atom Coordination and Pore Confinement on Selectivity Limitations for Ethane Oxidative Dehydrogenation Catalyzed by Vanadium-Oxo Species

2019 ◽  
Vol 123 (46) ◽  
pp. 28168-28191 ◽  
Author(s):  
Yilang Liu ◽  
Leelavathi Annamalai ◽  
Prashant Deshlahra
Keyword(s):  
Oxidative Dehydrogenation ◽  
Ethane Oxidative Dehydrogenation

In Situ Environmental STEM Study of the MoVTe Oxide M1 Phase Catalysts for Ethane Oxidative Dehydrogenation

ACS Catalysis ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 4775-4781 ◽  
Author(s):  
Mimoun Aouine ◽  
Thierry Epicier ◽  
Jean-Marc M. Millet
Keyword(s):  
Oxidative Dehydrogenation ◽  
M1 Phase ◽  
Ethane Oxidative Dehydrogenation

scholarly journals On the Promoting Effects of Te and Nb in the Activity and Selectivity of M1 MoV-Oxides for Ethane Oxidative Dehydrogenation

2020 ◽  
Vol 63 (19-20) ◽  
pp. 1754-1764
Author(s):  
Daniel Melzer ◽  
Gerhard Mestl ◽  
Klaus Wanninger ◽  
Andreas Jentys ◽  
Maricruz Sanchez-Sanchez ◽  
...  
Keyword(s):  
Oxidative Dehydrogenation ◽  
Oxidation Mechanism ◽  
Oxide Catalysts ◽  
Ethane Oxidation ◽  
M1 Phase ◽  
Phase Type ◽  
Metal Composition ◽  
Ethane Oxidative Dehydrogenation

AbstractThe pathways of ethane oxidative dehydrogenation and total combustion have been elucidated for M1 phase type Mo–V oxide catalysts with different metal composition. The ethane oxidation mechanism is not affected by the presence of Te or Nb. Conversely, the selectivity is strongly affected by stoichiometry of M1 catalysts. This is attributed to the facile oxidation of ethene to COx upon formation of unselective VOx species in the absence of Te and Nb.

High-throughput synthesis and screening of V–Al–Nb and Cr–Al–Nb oxide libraries for ethane oxidative dehydrogenation to ethylene

2000 ◽  
Vol 61 (1-4) ◽  
pp. 87-92 ◽  
Author(s):  
Yumin Liu ◽  
Peijun Cong ◽  
Robert D. Doolen ◽  
Howard W. Turner ◽  
W.Henry Weinberg
Keyword(s):  
Oxidative Dehydrogenation ◽  
High Throughput ◽  
Ethane Oxidative Dehydrogenation

scholarly journals The effect of phosphorus on the catalytic performance of nickel oxide in ethane oxidative dehydrogenation

2016 ◽  
Vol 6 (18) ◽  
pp. 6953-6964 ◽  
Author(s):  
Ştefan-Bogdan Ivan ◽  
Ionel Popescu ◽  
Ioana Fechete ◽  
François Garin ◽  
Vasile I. Pârvulescu ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Oxidative Dehydrogenation ◽  
Catalytic Performance ◽  
Ethane Conversion ◽  
Ethane Oxidative Dehydrogenation

Adding P to NiO leads to a decrease of ethane conversion with an increase in ODH selectivity.

Dynamic and Steady State Analysis of Low Temperature Ethane Oxidative Dehydrogenation over Chromia and Chromia-Vanadia Catalysts

2007 ◽  
Vol 5 (1) ◽  
Author(s):  
Gulsun Karamullaoglu ◽  
Timur Dogu
Keyword(s):  
Gas Phase ◽  
Oxidative Dehydrogenation ◽  
Mixed Oxide ◽  
Oxide Catalyst ◽  
Feed Ratio ◽  
Mixed Oxide Catalysts ◽  
Mixed Oxide Catalyst ◽  
Dynamic Experiments ◽  
Ethane Oxidative Dehydrogenation ◽  
Ethylene Selectivity

Oxidative dehydrogenation of ethane to ethylene was investigated over Chromia and Cr-V mixed oxide catalysts synthesized following a complexation procedure. With an O2/C2H6 feed ratio of 0.17, Chromia exhibited a total conversion value of about 0.20 at 447°C (at a space time of 0.24 s.g/mL) with an ethylene selectivity of 0.82. Chromia catalyst was more active than Cr-V mixed oxide at temperatures as low as 200°C. Pulse-response experiments carried out with ethane pulses injected into O2-He indicated the presence of at least two different sites for the formation of CO2 and H2O over Chromia catalyst. In the dynamic experiments carried out with the Cr-V mixed oxide catalyst and by injecting O2 pulses into a gas stream containing a mixture of C2H6 and He, formation of CO rather than C2H4 was favored. Results of the dynamic runs carried out without gas phase oxygen strengthened the conclusion of lattice oxygen participation in the selective oxidation of ethane reaction through a redox mechanism.

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