Sulfated zirconia catalyst supported on MCM-41 mesoporous molecular sieve

Chang Lin Chen, Soofin Cheng, Hong Ping Lin, She Tin Wong, Chung Yuan Mou

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89 Citations (Scopus)

Abstract

Sulfated zirconia (SZ) was supported on siliceous hollow tubular MCM-41 mesoporous molecular sieve by using a one-step incipient wetness impregnation method with zirconium sulfate as the precursor. The SZ/MCM-41 catalyst was obtained by thermal decomposition of the precursor in air. The resultant catalyst was characterized with various techniques, such as nitrogen physisorption, X-ray diffraction, SEM, and TEM. It was shown that the well-ordered channels of MCM-41 support arranged in hexagonal arrays while the hollow tubular morphology was retained. Both tetragonal and monoclinic phases of zirconia were developed in the catalysts. With the addition of a proper amount of aluminum as a promoter, resulting in catalyst SZA/MCM-41, the transformation of zirconia from metastable tetragonal phase to monoclinic phase was retarded. The catalytic activity of SZA/MCM-41 catalyst in the isomerization of n-butane was dramatically improved in comparison to the activities of SZ/MCM-41 or SZA/silica.

Original languageEnglish
Pages (from-to)21-30
Number of pages10
JournalApplied Catalysis A: General
Volume215
Issue number1-2
DOIs
Publication statusPublished - 2001 Jul 13

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

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