加氢催化剂活性相形貌结构认识与研究进展

摘要/Abstract

摘要： 基于已被广泛接受的Co(Ni)-Mo(W)-S活性相模型，借助透射电子显微镜观测到的片晶形貌结构，对加氢催化剂开展了较系统的构效关系研究，发现加氢催化剂的活性相形貌结构与催化剂性能紧密相关。随着表征技术的发展，通过球差校正扫描透射电子显微镜等技术可以观察到单原子和金属簇等更精细的结构信息，因而有必要进一步系统地研究单原子、金属簇和片晶等典型形貌结构之间的相互关系及其对催化剂性能的影响，从而进一步明确理想的活性相结构特点，并为新型加氢催化剂的高效研发提供理论依据。

关键词: 加氢催化剂, 活性相, 形貌, 结构, 透射电子显微镜, 球差校正扫描透射电子显微镜

Abstract: At present, based on the widely accepted Co (Ni)-Mo (W)-S active phase model, a systematic structure-activity relationship study has been carried out with the help of transmission electron microscope (TEM) observed morphology of active phase slabs on hydrotreating catalysts. It was found that morphology and structure of active phase slabs were closely related to the performance of the catalyst. With the development of characterization technology, more detailed structural information such as single atom and metal clusters could be observed by the aberration-corrected scanning transmission electron microscope (Cs-STEM), etc. Therefore, it was necessary to further systematically study the relationship of typical morphologies such as single atom, metal clusters and slabs and their impact on catalytic performance, so as to further clarify the structural characteristics of the ideal active phase, it also provided a theoretical basis for the efficient research and development of new hydrotreating catalysts.

Key words: hydrotreating catalyst, active phase, morphology, structure, TEM, Cs-STEM

李晨曦张乐李会峰郑爱国杨清河. 加氢催化剂活性相形貌结构认识与研究进展[J]. 石油炼制与化工, 2023, 54(2): 117-125.

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