Effect of pH on the Catalytic Properties of Mo鈥揤鈥揟e鈥揚鈥揙 Catalysts for Selective Oxidation of Isobutane
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- 作者：Jingqi Guan ; Hongsu Wang ; Ying Yang ; Bo Liu ; Xiaofang Yu ; Yuanyuan Ma and Qiubin Kan
- 关键词：Isobutane ; Methacrolein ; Selective oxidation ; Mo– ; V– ; Te– ; P– ; O mixed oxide catalysts
- 刊名：Catalysis Letters
- 出版时间：September, 2009
- 出版年：2009
- 期刊代码：13_1011372X
- 类别：ch
- 卷：131
- 期：3-4
- 页码：512-516
- 数据来源：sp
摘要
Mo–V–Te–P mixed oxide catalysts, prepared by a dry-up method at various pHs (in the range of about 1.0–9.0), have been tested in the partial oxidation of isobutane. The best catalytic performance was achieved over a catalyst prepared at a pH about 7.0. In this case, high selectivity to methacrolein (37.0%) at an isobutane conversion of 12.7%has been obtained at 380 掳C. The surface V4+/V5+ ratios of the calcined samples were strongly influenced by the pH in the synthesized solution, which is one of the key factors in the catalytic performance for selective oxidation of isobutane.