Effect of vanadia loading on the acidic, redox and catalytic properties of V2O5–TiO2 and V2O5–TiO2/SO42− catalysts for partial oxidation of methanol

2010 ◽  
Vol 152 (1-4) ◽  
pp. 70-77 ◽  
Author(s):  
H. Zhao ◽  
S. Bennici ◽  
J. Cai ◽  
J. Shen ◽  
A. Auroux
Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2410
Author(s):  
Shuai Zhang ◽  
Minghan Han

Mo–Fe catalysts with different Mo dispersions were synthesized with fast (Cat-FS, 600 r·min−1) or slow stirring speed (Cat-SS, 30 r·min−1) by the coprecipitation method. Improving the stirring speed strengthened the mixing of the solution and increased the dispersion of particles in the catalyst, which exhibited favorable activity and selectivity. The byproduct (dimethyl ether (DME)) selectivity increased from 2.3% to 2.8% with Cat-SS, while it remained unchanged with Cat-FS in a stability test. The aggregation of particles and thin Mo-enriched surface layer decreased the catalyst surface area and slowed down the reoxidation of reduced active sites with Cat-SS, leaving more oxygen vacancies which promoted the formation of DME by the nonoxidative channel.


2013 ◽  
Vol 2 (1) ◽  
pp. 27-34 ◽  
Author(s):  
R. Wojcieszak ◽  
R. Mateos-Blanco ◽  
D. Hauwaert ◽  
S. R.G. Carrazan ◽  
E. M. Gaigneaux ◽  
...  

2015 ◽  
Vol 168-169 ◽  
pp. 14-24 ◽  
Author(s):  
Silvia R. González Carrazán ◽  
Robert Wojcieszak ◽  
Raquel. M. Blanco ◽  
Cecilia Mateos-Pedrero ◽  
Patricio Ruiz

2005 ◽  
Vol 105 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
C. Hess ◽  
Ian J. Drake ◽  
James D. Hoefelmeyer ◽  
T. Don Tilley ◽  
Alex T. Bell

1997 ◽  
Vol 162 (1-2) ◽  
pp. 281-297 ◽  
Author(s):  
L. Alejo ◽  
R. Lago ◽  
M.A. Peña ◽  
J.L.G. Fierro

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