Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 20, Issue 16, Pages 3227-3231Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b924736j
Keywords
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Funding
- Major State Basic Research Development Program of People's Republic of China [2009CB623506, 2009CB623505]
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A novel hierarchical SAPO-34 monolith was prepared by the dry gel conversion of the amorphous silicoaluminophosphate monolith. The obtained material possesses macropores and mesopores besides micropores. The macroporous framework of the hierarchical SAPO-34 is constructed by interconnected spherical aggregates of cubic SAPO-34 crystals and mesopores is formed by the close stacking of cubic SAPO-34 crystals. Catalytic tests show that the hierarchical SAPO-34 possesses high catalytic activity compared with the conventional microporous SAPO-34 for methanol conversion to light olefins (MTO) reaction. The better activity is mainly assigned to the existence of cubic SAPO-34 crystals and the hierarchical porosity.
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