采用HREM表征和晶体学阐释MoS2/TiO2界面的微观结构

石油炼制与化工 ›› 2017, Vol. 48 ›› Issue (2): 63-67.

采用HREM表征和晶体学阐释MoS2/TiO2界面的微观结构

郭长友,沈智奇,凌凤香,王少军,张会成

中国石化抚顺石油化工研究院

收稿日期:2016-07-22 修回日期:2016-09-28 出版日期:2017-02-12 发布日期:2017-01-17
通讯作者: 郭长友 E-mail:cyguo4321@aliyun.com
作者简介:2017-03-22
基金资助:
中国石油化工股份有限公司合同项目

ELUCIDATION OF MICROSTRUCTURE ON MOS2-TiO2 INTERFACE IN MO/TiO2 CATALYST BY HREM AND CRYSTALLOLOGY

Received:2016-07-22 Revised:2016-09-28 Online:2017-02-12 Published:2017-01-17
Supported by:

摘要/Abstract

摘要： 本文用水热法制备了纳米二氧化钛载体材料，通过浸渍法制备成Mo/TiO2催化剂。用含10%H2S的H2进行干法硫化，获得硫化态催化剂。应用高分辨电子显微术（HREM）表征了催化剂的微观结构。结果表明，MoS2片晶与锐钛矿型二氧化钛载体之间除了基面键合方式外，还存在一种侧面键合方式，该键合方式为（101）表面上与（001）MoS2之间呈66度角，应用晶体学共格倒易点阵（CRLP）模型理论解释了MoS2/TiO2之间界面形成机理。

关键词: Mo/TiO2, 界面, 共格倒易点阵理论

Abstract: Nano anatase-TiO2(A-TiO2) support was synthesized by hydrothermal method. Subsequently, Mo/TiO2 catalyst was prepared by impregnation method and sulfided by dry method under H2S/H2（10 %）mixed gas. The microstructure of the sulfided Mo/TiO2 catalyst was observed by HREM. The results indicate that except base-bonding, MoS2 slab is also anchored on (101) facet of TiO2 with edge-bonding through (001) facet of MoS2. The facet angle between (001) MoS2 and (101) A-TiO2 is 66°. This orientation relationship is elucidated by Coincidence Reciprocal Lattice Points (CRLP) theory.

Key words: Mo/TiO2, interface, coincidence reciprocal lattice point theory

中图分类号:

郭长友沈智奇凌凤香王少军张会成. 采用HREM表征和晶体学阐释MoS2/TiO2界面的微观结构[J]. 石油炼制与化工, 2017, 48(2): 63-67.

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