Fabrication of SAPO-34 crystals with different morphologies by microwave heating

Song Lin, Jiyang Li, Raj Pal Sharma, Jihong Yu*, Ruren Xu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

The crystal size and shape of the silicoaluminophosphate molecular sieve SAPO-34 have been effectively controlled in the reaction system of Al 2O3-P2O5-SiO2-TEAOH- H2O under microwave radiations. Nano sheet-like SAPO-34 crystals are obtained when using colloidal silica as the silica source. When TEOS is used as the source of silica, homogeneous SAPO-34 crystals with a particle size of about 100 nm are formed, and the morphology of the crystals changes from uniform nano particles (∼100 nm) to microspheres (∼ 1.5 μm) by varying the H 2O/Al2O3 molar ratio. To further investigate the morphology control of SAPO-34, the synthetic factors, such as the silica source, water content, crystallization time and aging time have been studied in detail.

Original languageEnglish
Pages (from-to)1304-1310
Number of pages7
JournalTopics in Catalysis
Volume53
Issue number19-20
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

Keywords

  • Microwave heating
  • Morphology
  • SAPO-34
  • Zeolite

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