了解 Cu/ZnO 和 Cu/Al2O3 催化剂中铜与金属氧化物相互作用对环境的敏感性

IF 3.8 3区化学 Q2 CHEMISTRY, PHYSICAL

ChemCatChem Pub Date : 2024-08-27 DOI:10.1002/cctc.202401323

Zhaocong Jiang, Didi Li, Haoyuan Gu, Shiqing Jin, Minghui Zhu

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引用次数: 0

摘要

Cu/ZnO/Al2O3 三元催化剂是最重要的工业催化剂之一，在甲醇转化反应中表现出卓越的活性。然而，由于其对环境的敏感性，阐明对催化剂结构和性能有关键影响的金属支撑相互作用具有挑战性。本研究考察了在不同温度和氢气浓度下对 Cu/Al2O3 和 Cu/ZnO 模型催化剂进行还原处理后，Cu 与 Al2O3 和 ZnO 之间的相互作用。结合布鲁纳-艾美特-泰勒（BET）测量、X 射线衍射（XRD）、N2O 滴定、漫反射红外傅立叶变换光谱（DRIFTS）和高分辨率透射电子显微镜（HRTEM），可以全面了解催化剂的结构演变。

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Understanding the Environmental Sensitivity of Copper‐Metal Oxides Interactions in Cu/ZnO and Cu/Al2O3 Catalysts

Ternary Cu/ZnO/Al2O3 catalysts are one of the most important industrial catalysts and show excellent activity in methanol reforming reaction. However, it is challenging to elucidate the metal support interactions, which critically influence the catalyst structure and performance, due to their environmentally sensitive nature. This study examines the interactions between Cu and Al2O3 and ZnO, after reductive treatments of the Cu/Al2O3 and Cu/ZnO model catalysts with varying temperatures and hydrogen concentration. A combination of Brunner‐Emmet‐Teller (BET) measurements, X‐ray diffraction (XRD), N2O titration, diffuse reflectance infrared Fourier transformations spectroscopy (DRIFTS) and high‐resolution transmission electron microscopy (HRTEM) provided comprehensive insights into the structural evolution of the catalysts.

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来源期刊

ChemCatChem 化学-物理化学

CiteScore

8.10

自引率

4.40%

发文量

511

审稿时长

1.3 months

期刊介绍： With an impact factor of 4.495 (2018), ChemCatChem is one of the premier journals in the field of catalysis. The journal provides primary research papers and critical secondary information on heterogeneous, homogeneous and bio- and nanocatalysis. The journal is well placed to strengthen cross-communication within between these communities. Its authors and readers come from academia, the chemical industry, and government laboratories across the world. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies, and is supported by the German Catalysis Society.