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负载在磷改性氧化铝上的钌作为糠醛催化转移加氢的有效且稳定的催化剂。

Ruthenium on phosphorous-modified alumina as an effective and stable catalyst for catalytic transfer hydrogenation of furfural.

作者信息

Fovanna Thibault, Campisi Sebastiano, Villa Alberto, Kambolis Anastasios, Peng Gael, Rentsch Daniel, Kröcher Oliver, Nachtegaal Maarten, Ferri Davide

机构信息

Paul Scherrer Institut CH-5232 Villigen PSI Switzerland

École polytechnique fédérale de Lausanne (EPFL), Institute of Chemical Sciences and Engineering CH-1015 Lausanne Switzerland.

出版信息

RSC Adv. 2020 Mar 20;10(19):11507-11516. doi: 10.1039/d0ra00415d. eCollection 2020 Mar 16.

DOI:10.1039/d0ra00415d
PMID:35495338
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9050498/
Abstract

Supported ruthenium was used in the liquid phase catalytic transfer hydrogenation of furfural. To improve the stability of Ru against leaching, phosphorous was introduced on a Ru/AlO based catalyst upon impregnation with ammonium hypophosphite followed by either reduction or calcination to study the effect of phosphorous on the physico-chemical properties of the active phase. Characterization using X-ray diffraction, solid state P nuclear magnetic resonance spectroscopy, X-ray absorption spectroscopy, temperature programmed reduction with H, infrared spectroscopy of pyridine adsorption from the liquid phase and transmission electron microscopy indicated that phosphorous induces a high dispersion of Ru, promotes Ru reducibility and is responsible for the formation of acid species of Brønsted character. As a result, the phosphorous-based catalyst obtained after reduction was more active for catalytic transfer hydrogenation of furfural and more stable against Ru leaching under these conditions than a benchmark Ru catalyst supported on activated carbon.

摘要

负载型钌用于糠醛的液相加氢转移催化反应。为提高钌的抗浸出稳定性，在用次磷酸铵浸渍Ru/AlO基催化剂后引入磷，然后进行还原或煅烧，以研究磷对活性相物理化学性质的影响。使用X射线衍射、固态磷核磁共振光谱、X射线吸收光谱、氢气程序升温还原、液相吡啶吸附红外光谱和透射电子显微镜进行表征，结果表明磷可使钌高度分散，促进钌的还原，并导致形成布朗斯台德酸性物种。因此，在这些条件下，还原后得到的磷基催化剂对糠醛的催化转移氢化反应更具活性，并且比负载在活性炭上的基准钌催化剂更能抵抗钌的浸出。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f75/9050498/a9adf088803f/d0ra00415d-f6.jpg
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