Effects of ultrasound on SAPO-34 molecular sieve synthesis

Li Ming Kong, Xiao Qin Liu, Ding Hua Liu

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

The effects of ultrasound irradiation on SAPO-34 molecular sieve synthesis are investigated for improving its catalytic performance in MTO (Methanol to olefin). The molecular sieve samples are characterized with XRD, SEM, FT-IR, and DTG techniques. XRD results show that the crystallization rate and the crystallinity of SAPO-34 increase apparently after ultrasound irradiation. SEM results show that the crystal size becomes smaller and the size distribution becomes narrower after ultrasound irradiation. Ultrasonic-wave treatment is effective in improving the thermal stability of SAPO-34 molecular sieve. MTO catalytic reaction shows that the SAPO-34 molecular sieve of smaller crystal size has higher selectivity to ethylene and propylene.

源语言英语
页(从-至)528-532
页数5
期刊Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and Technology
31
4
出版状态已出版 - 8月 2007

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