Catalytic behavior of alumina-promoted sulfated zirconia supported on mesoporous silica in butane isomerization

Chang Lin Chen, Tao Li, Soofin Cheng, Nanping Xu, Chung Yuan Mou

研究成果: 雜誌貢獻文章同行評審

41 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)223-229
頁數7
期刊Catalysis Letters
78
發行號1-4
DOIs
出版狀態已發佈 - 3月 2002
對外發佈

ASJC Scopus subject areas

  • 催化
  • 化學 (全部)

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