The direct synthesis of H2O2 and in situ oxidation of methane: An investigation into the role of the support

IF 5.2 2区化学 Q1 CHEMISTRY, APPLIED Catalysis Today Pub Date : 2024-07-01 DOI:10.1016/j.cattod.2024.114910

Fenglou Ni , Richard J. Lewis , Ángeles López-Martín , Louise R. Smith , David J. Morgan , Thomas E. Davies , Stuart H. Taylor , Graham J. Hutchings

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Abstract

The selective oxidation of methane to methanol, using H₂O₂ generated in situ from H₂ and O₂ has been investigated using bimetallic gold-palladium catalysts, prepared via an industrially relevant wet co-impregnation protocol on a range of zeolite and metal oxide supports. The choice of catalyst support was found to drastically influence catalyst performance, through control of both nanoparticle dispersion and Pd speciation. Notably in the case of those formulations prepared on metal oxides a direct correlation between catalytic performance towards H₂O₂ synthesis and methane valorisation exists, whereas in the case of the zeolitic-based analogues, no clear correlation could be drawn between activity towards individual reaction pathways.

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直接合成 H2O2 和甲烷的原位氧化：对支持物作用的研究

通过在一系列沸石和金属氧化物载体上采用与工业相关的湿法共浸渍工艺制备的双金属金-钯催化剂，研究了利用 H2 和 O2 原位生成的 H2O2 将甲烷选择性氧化为甲醇的过程。研究发现，催化剂载体的选择可通过控制纳米粒子的分散和钯的标示而极大地影响催化剂的性能。值得注意的是，在金属氧化物上制备的配方在 H2O2 合成和甲烷估价的催化性能之间存在直接的相关性，而在沸石基类似物上制备的配方在各个反应途径的活性之间没有明确的相关性。

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来源期刊

Catalysis Today 化学-工程：化工

CiteScore

11.50

自引率

3.80%

发文量

573

审稿时长

2.9 months

期刊介绍： Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues. Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.