Modification of the performance of WO3-ZrO2 catalysts by metal addition in hydrocarbon reactions

Química Nova

Universidad Nacional del Litoral, Santa Fe, Argentina¹  Vera, Carlos Román¹  Manuale, Debora Laura¹  Benítez, Viviana Mónica¹  Torres, Gerardo Carlos¹  Yori, Juan Carlos¹ 

关键词: tungstated zirconia;    Ni addition;    hydrocarbon reactions.;   

DOI  :  10.1590/S0100-40422012000400018

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A study of the different hydrocarbon reactions over Ni doped WO3-ZrO2 catalysts was performed. Ni was found as NiO at low Ni concentration while at high Ni concentrations a small fraction was present as a metal. For both cases, Ni strongly modified total acidity and concentration of strong acid sites. In the cyclohexane dehydrogenation reaction, Ni addition promotes both benzene and methyl cyclopentane production. The hydroconversion activity (n-butane and n-octane) increases with the augment of total acidity produced by Ni. The selectivity to reaction products is modified according to the acid strength distribution changes produced by Ni addition.

【 授权许可】

Unknown