在源自 Ce-MOF 的 Y（Y = Cu、Mn、Co）改性 CeO2 上催化氧化乙酸乙酯

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Communications Pub Date : 2024-01-01 DOI:10.1016/j.catcom.2023.106832

Lirong Lv , Zhongguo Zhang , Sheng Wang , Yue Shan , Liangliang Wang , Tongzhou Xu , Peiran He

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引用次数: 0

摘要

以 Y（Y = Cu、Co、Mn）负载的 Ce 基金属有机框架为前驱体，制备了一系列 YCe 催化剂。在乙酸乙酯（EA）的催化氧化过程中，锰负载 CeO2 的催化活性明显优于贵金属催化剂。通过不同的表征方法研究了 YCe 催化剂的物理化学性质与催化活性之间的关系。催化活性的增强归因于过渡金属与 Ce 之间的强相互作用、高比表面积、丰富的晶格缺陷、更多的氧空位和更高的 Olatt/(Olatt + Oads + Ow) 摩尔比。EA 氧化过程中的主要中间产物是乙醇、乙酸、丙酮、乙醛和二乙醚。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Catalytic oxidation of ethyl acetate over Y (Y = Cu, Mn, Co)-modified CeO2 derived from Ce-MOF

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Catalytic oxidation of ethyl acetate over Y (Y = Cu, Mn, Co)-modified CeO2 derived from Ce-MOF

A series of YCe catalysts were prepared using Y-loaded (Y = Cu, Co, Mn) Ce-based metal–organic framework as a precursor. Mn-loaded CeO₂ exhibited significantly better catalytic activity in the catalytic oxidation of ethyl acetate (EA) than noble metal catalyst. The relationship between the physicochemical properties of YCe catalysts and catalytic activity was studied by different characterization methods. The enhanced catalytic activity was attributed to the strong interaction between the transition metals and Ce, high specific surface area, abundant lattice defects, more oxygen vacacies and higher O_latt/(O_latt + O_ads + O_w) molar ratios. The main intermediates in the oxidation of EA were ethanol, acetic acid, acetone, acetaldehyde and diethyl ether.

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.