Catalytic Activity of Vanadium-Molybdenum Oxide Catalysts in Partial Oxidation of Budadiene

1970 ◽  
Vol 73 (5) ◽  
pp. 950-954 ◽  
Author(s):  
Mamoru AI
1993 ◽  
Vol 51 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Hideo Orita ◽  
Takashi Hayakawa ◽  
Masao Shimizu ◽  
Katsuomi Takehira

2017 ◽  
Vol 19 (3) ◽  
pp. 809-815 ◽  
Author(s):  
Haigen Huang ◽  
Xueguang Wang ◽  
Xu Li ◽  
Chenju Chen ◽  
Xiujing Zou ◽  
...  

A non-noble Ni-MoO3/CN@SBA-15 catalyst exhibits unprecedented catalytic activity and chemoselectivity for the reduction of nitroarenes to anilines in ethanol with hydrazine hydrate.


1995 ◽  
Vol 30 (1-4) ◽  
pp. 159-169 ◽  
Author(s):  
Kunio Suzuki ◽  
Takashi Hayakawa ◽  
Masao Shimizu ◽  
Katsuomi Takehira

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2495
Author(s):  
Daniela Pietrogiacomi ◽  
Maria Cristina Campa ◽  
Ida Pettiti ◽  
Simonetta Tuti ◽  
Giulia Luccisano ◽  
...  

Ni/ZrO2 catalysts, active and selective for the catalytic partial oxidation of methane to syngas (CH4-CPO), were prepared by the dry impregnation of zirconium oxyhydroxide (Zhy) or monoclinic ZrO2 (Zm), calcination at 1173 K and activation by different procedures: oxidation-reduction (ox-red) or direct reduction (red). The characterization included XRD, FESEM, in situ FTIR and Raman spectroscopies, TPR, and specific surface area measurements. Catalytic activity experiments were carried out in a flow apparatus with a mixture of CH4:O2 = 2:1 in a short contact time. Compared to Zm, Zhy favoured the formation of smaller NiO particles, implying a higher number of Ni sites strongly interacting with the support. In all the activated Ni/ZrO2 catalysts, the Ni–ZrO2 interaction was strong enough to limit Ni aggregation during the catalytic runs. The catalytic activity depended on the activation procedures; the ox-red treatment yielded very active and stable catalysts, whereas the red treatment yielded catalysts with oscillating activity, ascribed to the formation of Niδ+ carbide-like species. The results suggested that Ni dispersion was not the main factor affecting the activity, and that active sites for CH4-CPO could be Ni species at the boundary of the metal particles in a specific configuration and nuclearity.


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