Oxidative Dehydrogenation of Ethane on Vanadium-Containing Aluminophosphates with AFI Structure

1998 ◽  
Vol 63 (11) ◽  
pp. 1869-1883 ◽  
Author(s):  
Teresa Blasco ◽  
Patricia Concepción ◽  
José M. López Nieto ◽  
Arturo Martínez-Arias
Keyword(s):  
Hydrothermal Synthesis ◽  
Molecular Oxygen ◽  
Oxidative Dehydrogenation ◽  
Diffuse Reflectance ◽  
Catalytic Properties ◽  
Nitrogen Adsorption ◽  
Catalytic Performance ◽  
Oxidative Dehydrogenation Of Ethane ◽  
Catalytic Behaviour ◽  
Acid Character

MeAPO-5 (Me = V, Mg, Co, Mn) and VMeAPO-5 (Me = Mg, Co, Mn) with AFI structure were prepared by hydrothermal synthesis and characterized by nitrogen-adsorption, TPR, diffuse reflectance (UV-VIS) and ESR spectroscopies. Their catalytic performance in the oxidative dehydrogenation of ethane using molecular oxygen was also studied. Although different catalytic behaviour was observed depending on the metal incorporated, Vanadia-metal containing materials were the most selective catalysts. The importance of both redox and acid character of the catalysts on their catalytic properties is discussed.

Effect of Bi on catalytic performance and stability of MoVTeNbO catalysts in oxidative dehydrogenation of ethane

2017 ◽  
Vol 534 ◽  
pp. 58-69 ◽  
Author(s):  
E.V. Ishchenko ◽  
R.V. Gulyaev ◽  
T.Yu. Kardash ◽  
A.V. Ishchenko ◽  
E.Yu. Gerasimov ◽  
...  
Keyword(s):  
Oxidative Dehydrogenation ◽  
Catalytic Performance ◽  
Oxidative Dehydrogenation Of Ethane

Redox and Catalytic Properties of Promoted NiO Catalysts for the Oxidative Dehydrogenation of Ethane

2017 ◽  
Vol 121 (45) ◽  
pp. 25132-25142 ◽  
Author(s):  
D. Delgado ◽  
B. Solsona ◽  
A. Ykrelef ◽  
A. Rodríguez-Gómez ◽  
A. Caballero ◽  
...  
Keyword(s):  
Oxidative Dehydrogenation ◽  
Catalytic Properties ◽  
Oxidative Dehydrogenation Of Ethane

Impregnation vs. coprecipitation dispersion of Cr over TiO2 and ZrO2 used as active and stable nanocatalysts in oxidative dehydrogenation of ethane to ethylene by carbon dioxide

RSC Advances ◽  
2016 ◽  
Vol 6 (50) ◽  
pp. 44195-44204 ◽  
Author(s):  
Azadeh Talati ◽  
Mohammad Haghighi ◽  
Farhad Rahmani
Keyword(s):  
Carbon Dioxide ◽  
Oxidative Dehydrogenation ◽  
Catalytic Performance ◽  
Oxidative Dehydrogenation Of Ethane

The catalytic performance of Cr/ZrO2 and Cr/TiO2 nanocatalysts, prepared by coprecipitation and impregnation methods, was examined in oxidative dehydrogenation of ethane to ethylene using CO2 as an oxidant.

scholarly journals Mixed Metal Oxides of M1 MoVNbTeOx and TiO2 as Composite Catalyst for Oxidative Dehydrogenation of Ethane

Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 71
Author(s):  
Yuxin Chen ◽  
Dan Dang ◽  
Binhang Yan ◽  
Yi Cheng
Keyword(s):  
Metal Oxides ◽  
Oxidative Dehydrogenation ◽  
Sol Gel ◽  
Catalytic Performance ◽  
Mixed Metal Oxides ◽  
Gel Method ◽  
Mixed Metal ◽  
Sol Gel Method ◽  
Composite Catalysts ◽  
Oxidative Dehydrogenation Of Ethane

Composite catalysts of mixed metal oxides were prepared by mixing a phase-pure M1 MoVNbTeOx with anatase-phase TiO2. Two methods were used to prepare the composite catalysts (the simple physically mixed or sol-gel method) for the improvement of the catalytic performance in the oxidative dehydrogenation of ethane (ODHE) process. The results showed that TiO2 particles with a smaller particle size were well dispersed on the M1 surface for the sol-gel method, which presented an excellent activity for ODHE. At the same operating condition (i.e., the contact time of 7.55 gcat·h/molC2H6 and the reaction temperature of 400 °C), the M1-TiO2-SM and M1-TiO2-PM achieved the space time yields of 0.67 and 0.52 kgC2H4/kgcat/h, respectively, which were about ~76% and ~35% more than that of M1 catalyst (0.38 kgC2H4/kgcat/h), respectively. The BET, ICP, XRD, TEM, SEM, H2-TPR, C2H6-TPSR, and XPS techniques were applied to characterize the catalysts. It was noted that the introduction of TiO2 raised the V5+ abundance on the catalyst surface as well as the reactivity of active oxygen species, which made contribution to the promotion of the catalytic performance. The surface morphology and crystal structure of used catalysts of either M1-TiO2-SM or M1-TiO2-PM remained stable as each fresh catalyst after 24 h time-on-stream tests.

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