Effect of Crystallization of Hydrous Zirconia on the Isomerization Activity of Pt/WO3-ZrO2

✍ Scribed by Juanjuan ZHANG; Yueqin SONG; Yifei ZHANG; Xiaolong ZHOU; Yaqing JIN; Longya XU

• Publisher: Elsevier Science
• Year: 2010
• Weight: 141 KB
• Volume: 31
• Category: Article
• ISSN: 1872-2067
• DOI: 10.1016/s1872-2067(09)60054-1

✦ Synopsis

A series of crystalline hydrous zirconia supports were prepared by different methods. The preparation method affected the crystallization mode of supports and catalytic activity of Pt/WO 3 -ZrO 2 for n-hexane isomerization. The catalysts were characterized by X-ray photoelectron, Raman spectroscopy, and NH 3 temperature-programmed desorption. The crystallization mode of hydrous zirconia was affected by the ambience used in the synthesis. Crystalline hydrous zirconia prepared in the absence of oxygen led to a catalyst with high activity, and the case was the opposite when it was prepared in the presence of oxygen.