mixed metal oxides
Recently Published Documents





Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 71
Yuxin Chen ◽  
Dan Dang ◽  
Binhang Yan ◽  
Yi Cheng

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.

Haisen Li ◽  
Huihui Liu ◽  
Qing Qin ◽  
Xien Liu

Lack of low-cost and efficient oxygen evolution reaction (OER) catalysts in acid media has significantly limited the development of proton exchange membrane water electrolysis, which can perfectly integrate with intermittent...

Yanfeng Wen ◽  
Shunzheng Zhao ◽  
Honghong Yi ◽  
Fengyu Gao ◽  
Qingjun Yu ◽  

Mehran Nozari-Asbemarz ◽  
Mandana Amiri ◽  
Hamideh Imanzadeh ◽  
Abolfazl Bezaatpour ◽  
Sima Nouhi ◽  

Fuel ◽  
2021 ◽  
Vol 306 ◽  
pp. 121751
Ya Song ◽  
Jiabao Bai ◽  
Shenqin Jiang ◽  
Huawei Yang ◽  
Lixia Yang ◽  

2021 ◽  
pp. 118470
Rafaela Gabriel ◽  
Sandra H.V. de Carvalho ◽  
José L. da Silva Duarte ◽  
Leonardo M.T.M. Oliveira ◽  
Dimitrios A. Giannakoudakis ◽  

Sign in / Sign up

Export Citation Format

Share Document