期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 250, 期 -, 页码 43-46出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2017.05.021
关键词
Porous materials; Large external surface; Nano-ZSM-5; Hollow structure; Mesoporous shell
类别
资金
- National Natural Science Foundation of China [21606160]
- Science and Technology Foundation Platform Construction Project of Shanxi Province [2015091009]
A hollow nano-ZSM-5 zeolites with mesoporous shell was successfully synthesized by a two-step alkaline treatment method. Firstly, nano-ZSM-5 zeolite was alkali treated with NaOH solution to dissolve internal silica of crystals and then the hollow structure was formed. After that, obvious mesopores were introduced in the shell of the hollow zeolites by a NaOH&TPAOH leaching based on the protective desilication. As a result, the external surface area was increased from 98 to 203 m(2)g(-1), more than twice that of the untreated nano-ZSM-5. The thin shell and rich mesopores would improve its catalytic performance in many diffusion-limited reactions. (C) 2017 Elsevier Inc. All rights reserved.
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