Catalytic Behavior of Alumina-Promoted Sulfated Zirconia Supported on Mesoporous Silica in Butane Isomerization |
| |
Authors: | Chang-Lin Chen Tao Li Soofin Cheng Nanping Xu Chung-Yuan Mou |
| |
Affiliation: | (1) Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan, P.R. China;(2) College of Chemical Engineering, Nanjing University of Technology, Nanjing, China, 210009 |
| |
Abstract: | Alumina-promoted sulfated zirconia was supported on mesoporous molecular sieves of pure-silica MCM-41 and SBA-15. The catalysts were prepared by direct impregnation of metal sulfate onto the as-synthesized MCM-41 and SBA-15 materials, followed by solid state dispersion and thermal decomposition. Measurements of XRD and nitrogen adsorption isotherms showed that the structures of resultant materials retain well-ordered pores, even with ZrO2 loading as high as 50 wt%. The characterization results indicated that most of the promoted sulfated zirconia were well dispersed on the internal surface of the ordered mesopores. The catalytic behavior of the alumina-promoted sulfated zirconia supported on mesoporous silica was studied in n-butane isomerization. The supports of mesoporous structures led to high dispersion of sulfated zirconia in the meta-stable tetragonal phase, which was the catalytic active phase. The high performance of alumina-promoted catalysts was ascribed to the sulfur retention by alumina. |
| |
Keywords: | sulfated zirconia mesoporous silica MCM-41 SBA-15 isomerization of butane alumina |
本文献已被 SpringerLink 等数据库收录! |
|