Titration of active sites for partial oxidation of methanol over V2O5/SnO2 and MoO3/SnO2 catalysts by a low-temperature oxygen chemisorption technique

1989 ◽  
Vol 55 (1) ◽  
pp. L1-L4 ◽  
Author(s):  
B. Mahipal Reddy ◽  
K. Narsimha ◽  
Ch. Sivaraj ◽  
P. Kanta Rao
Keyword(s):  
Low Temperature ◽  
Partial Oxidation ◽  
Active Sites ◽  
Oxygen Chemisorption ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol

scholarly journals Effect of Mo Dispersion on the Catalytic Properties and Stability of Mo–Fe Catalysts for the Partial Oxidation of Methanol

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2410
Author(s):  
Shuai Zhang ◽  
Minghan Han
Keyword(s):  
Surface Layer ◽  
Surface Area ◽  
Partial Oxidation ◽  
Active Sites ◽  
Oxygen Vacancies ◽  
Catalyst Surface ◽  
Catalytic Properties ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol ◽  
Fe Catalysts

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.

scholarly journals Niobium-substituted octahedral molecular sieve (OMS-2) materials in selective oxidation of methanol to dimethoxymethane

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32665-32673 ◽  
Author(s):  
Niluka D. Wasalathanthri ◽  
Curtis Guild ◽  
Quddus A. Nizami ◽  
Shanka L. Dissanayake ◽  
Junkai He ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Partial Oxidation ◽  
Temperature Regime ◽  
Molecular Sieve ◽  
Active Sites ◽  
Promising Candidate ◽  
Oxidation Of Methanol ◽  
Partial Oxidation Of Methanol ◽  
Lower Temperature

The prepared bifunctional Nb-OMS-2 catalysts are promising candidate in partial oxidation of methanol into dimethoxymethane at a lower temperature suggesting that there is an important temperature regime when forming active sites for DMM production.

Modulation of the selectivity in partial oxidation of methanol over CuZnAl catalysts by adding CO 2 and/or H 2 into the reaction feed

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

scholarly journals Partial Oxidation of Methanol Over Highly Dispersed Vanadia Supported on Silica SBA-15

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

Partial oxidation of methanol to produce hydrogen over CuZn-based catalysts

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