气相法制备ZIF-8纳米膜包覆Pt/SiO2催化剂及其炔烃半加氢性能

Gen Luo, Bin Zhang, Xin Chun Yang, Hui Bin Wu, Fan Chun Meng, Li Ming Zhai, Yong Qin

科研成果: 期刊稿件文章同行评审

7 引用 (Scopus)

摘要

In this work, ZIF-8/Pt/SiO2 catalysts were prepared by combining atomic layer deposition (ALD) and vapor phase conversion methods. First, Pt metal nanoparticles were deposited on SiO2 nanowires by ALD. Then, ZnO was further deposited, also by ALD. Subsequently, the ZnO film was converted into ZIF-8 film by vapor phase crystallization to form a sandwich structure (ZIF-8/Pt/SiO2). The microstructures of the catalysts were characterized by XRD, TEM, BET, IC-MS, XPS, and CO-DRIFT. It was shown that the Pt particles were highly dispersed on the SiO2nanowires before and after coating with ZIF-8, and the ZIF-8 film was coated continuously on the entire catalyst with high conformity. The performance of the catalyst was studied by using the semi-hydrogenation of 1-heptyne as a probe reaction. The ZIF-8 film induces an electron density increase in the Pt component, leading to an increase of the olefin selectivity from 14% to 70% in the 1-heptyne hydrogenation reaction. A reduced thickness of the ZIF-8 film increases the catalytic activity but does not affect the selectivity of 1-heptylene.

投稿的翻译标题Synthesis of ZIF-8-coated Pt/SiO2 by vapor deposition for alkyne semi-hydrogenation
源语言繁体中文
页(从-至)1316-1325
页数10
期刊Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology
49
9
DOI
出版状态已出版 - 9月 2021
已对外发布

关键词

  • Atomic layer deposition
  • Semi-hydrogenation
  • Vapor phase crystallization
  • ZIF-8 film

指纹

探究 '气相法制备ZIF-8纳米膜包覆Pt/SiO2催化剂及其炔烃半加氢性能' 的科研主题。它们共同构成独一无二的指纹。

引用此