铜负载Y分子筛中Cu物种的表征及分析

doi:10.16085/j.issn.1000-6613.2015.07.020

摘要/Abstract

摘要： 综述了铜负载Y分子筛(CuY)中Cu物种表征及分析的研究进展, 重点阐述了近年来X射线衍射分析(XRD)、透射电子显微镜分析(TEM)、X射线光电子能谱分析(XPS)、H₂程序升温还原(H₂-TPR)、原位红外光谱(CO-IR和NO-IR)、电子顺磁共振(ESR)等表征方法在CuY中Cu物种的微观结构分析方面取得的进展。还对制备方法对CuY中Cu物种落位和性能的影响进行了综述, 指出综合采用这些表征方法, 得到CuY中Cu物种状态、价态、落位及含量等更加全面、准确的信息, 进而选择合适的制备方法调控CuY中Cu物种存在状态、价态及落位, 制备出性能更佳的CuY是今后发展的方向。

关键词: CuY催化剂, 表面, 铜物种, 存在状态, 价态, 分布, 表征分析

Abstract: This paper reviewed the research progress in Cu species characterization and analysis about CuY, and focused recent progress in micro-structure analysis of CuY by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), hydrogen temperature programmed reduction (H₂-TPR), in situ infrared spectroscopy (CO-IR and NO-IR), and electron spin resonance (ESR). The paper also reviewed that the CuY preparation has effect on the location of copper species and the performance of CuY, and pointed out that accurate and informed information about present state, valence state, location, content can be obtained by synthetically employing all above characterization methods. The future development could be focused on the preparation of CuY with optimum performance by choosing appropriate method to regulate and control present state, valence state, and the location of copper species.

Key words: CuY catalyst, surface, copper species, presence status, valence state, distributions, characterization analysis

中图分类号:

O643.36

王玉春, 郑华艳, 李梦云, 李忠. 铜负载Y分子筛中Cu物种的表征及分析[J]. 化工进展, 2015, 34(07): 1933-1940.

WANG Yuchun, ZHENG Huayan, LI Mengyun, LI Zhong. Characterization and analysis of copper species on the surface of Y zeolite loaded copper[J]. Chemical Industry and Engineering Progree, 2015, 34(07): 1933-1940.

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