Surface properties of Fe2O3-SiO2 mixed oxide and the activity for but-1-ene reaction

1982 ◽  
Vol 35 (5) ◽  
pp. 919 ◽  
Author(s):  
T Iizuka ◽  
H Tatsumi ◽  
K Tanabe
Keyword(s):  
Surface Properties ◽  
Oxidative Dehydrogenation ◽  
Mixed Oxide ◽  
Infrared Study ◽  
Ene Reaction ◽  
Isotope Tracer ◽  
Carbenium Ion ◽  
Intermediate Mechanism

The oxidative dehydrogenation and isomerization of but-1-ene were studied over Fe2O3-SiO2 catalysts of different composition. It was observed that the activity and selectivity to buta-1,3-diene increased markedly on adding a small amount of SiO2 to Fe2O3. To examine the activity and the mechanism of these reactions, an experiment with deuterium isotope tracer, as well as an infrared study, was carried out. On the basis of the results, it was concluded that the ally1 intermediate mechanism was operative for but-1-ene isomerization and buta-1,3-diene formation over Fe2O3-rich catalysts, and the carbenium ion mechanism was operative for but-1-ene isomerization over SO2-rich catalysts.

Oxidative dehydrogenation of ethylbenzene to styrene with CO2 over SnO2–ZrO2 mixed oxide nanocomposite catalysts

2008 ◽  
Vol 131 (1-4) ◽  
pp. 173-178 ◽  
Author(s):  
David Raju Burri ◽  
Kwang-Min Choi ◽  
Dae-Soo Han ◽  
Sujandi ◽  
Nanzhe Jiang ◽  
...  
Keyword(s):  
Oxidative Dehydrogenation ◽  
Mixed Oxide ◽  
Dehydrogenation Of Ethylbenzene ◽  
Nanocomposite Catalysts ◽  
Oxidative Dehydrogenation Of Ethylbenzene

Oxidative dehydrogenation of ethane over a Mo–V–Nb–Te–O mixed-oxide catalyst in a cyclic mode

2017 ◽  
Vol 58 (2) ◽  
pp. 156-160 ◽  
Author(s):  
I. I. Mishanin ◽  
A. N. Kalenchuk ◽  
K. I. Maslakov ◽  
V. V. Lunin ◽  
A. E. Koklin ◽  
...  
Keyword(s):  
Oxidative Dehydrogenation ◽  
Mixed Oxide ◽  
Oxide Catalyst ◽  
Cyclic Mode ◽  
Oxidative Dehydrogenation Of Ethane ◽  
Mixed Oxide Catalyst

Surface properties of RuO2 + IrO2 mixed oxide electrodes

1986 ◽  
Vol 214 (1-2) ◽  
pp. 535-546 ◽  
Author(s):  
C. Angelinetta ◽  
S. Trasatti ◽  
Lj.D. Atanososka ◽  
R.T. Atanasoski
Keyword(s):  
Surface Properties ◽  
Mixed Oxide ◽  
Oxide Electrodes ◽  
Mixed Oxide Electrodes

scholarly journals Kinetic Study of Oxidative Dehydrogenation of Ethane over MoVTeNb Mixed-Oxide Catalyst

2013 ◽  
Vol 53 (5) ◽  
pp. 1775-1786 ◽  
Author(s):  
Jaime S. Valente ◽  
R. Quintana-Solórzano ◽  
H. Armendáriz-Herrera ◽  
G. Barragán-Rodríguez ◽  
J. M. López-Nieto
Keyword(s):  
Kinetic Study ◽  
Oxidative Dehydrogenation ◽  
Mixed Oxide ◽  
Oxide Catalyst ◽  
Oxidative Dehydrogenation Of Ethane ◽  
Mixed Oxide Catalyst

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.

Sign in / Sign up

Export Citation Format

Share Document