高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 190.

• Chemistry in Materials Sciences • 上一篇    下一篇

Strong Acidic and High Temperature Hydrothermally Stable Mesoporous Aluminosilicates with Well-ordered Hexagonal Structure

XIAO Feng-Shou, ZHANG Zong-Tao, HAN Yu, QIU Shi-Lun   

  1. Department of Chemistry, Jilin University, Changchun 130023
  • 出版日期:2000-12-31 发布日期:2000-12-31

Strong Acidic and High Temperature Hydrothermally Stable Mesoporous Aluminosilicates with Well-ordered Hexagonal Structure

XIAO Feng-Shou, ZHANG Zong-Tao, HAN Yu, QIU Shi-Lun   

  1. Department of Chemistry, Jilin University, Changchun 130023
  • Online:2000-12-31 Published:2000-12-31

摘要:

Mesoporous molecular sieves such as hexagonally ordered MCM-41 have been attracted many researchers' attention since they are potentially used as versatile catalysts and catalyst supports for conversion of large molecules. However, as compared with those of zeolites, the acidity and hydrothermal stability of these mesostructured materials are relatively low, which strongly influence their practical applications in industrial catalytic reactions of petroleum. Despite several successful examples of preparation on the stabilization of aluminosilicate mesostructures at low temperature (in boiling water,100℃) including syntheses of materials with thick pore walls by triblock copolymers, removal of silanol groups by silylation, addition of salts effects,and post-treatments, their acidity and hydrothermal stability at high temperature (800℃) are still lower than those of microporous aluminosilicate zeolites.

Abstract:

Mesoporous molecular sieves such as hexagonally ordered MCM-41 have been attracted many researchers' attention since they are potentially used as versatile catalysts and catalyst supports for conversion of large molecules. However, as compared with those of zeolites, the acidity and hydrothermal stability of these mesostructured materials are relatively low, which strongly influence their practical applications in industrial catalytic reactions of petroleum. Despite several successful examples of preparation on the stabilization of aluminosilicate mesostructures at low temperature (in boiling water,100℃) including syntheses of materials with thick pore walls by triblock copolymers, removal of silanol groups by silylation, addition of salts effects,and post-treatments, their acidity and hydrothermal stability at high temperature (800℃) are still lower than those of microporous aluminosilicate zeolites.

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