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Hydrodeoxygenation of lignin-derived phenolics – a review on the active sites of supported metal catalysts
Green Chemistry ( IF 9.3 ) Pub Date : 2020-10-20 , DOI: 10.1039/d0gc02610g
Xinchao Wang 1, 2, 3, 4, 5 , Masahiko Arai 1, 2, 3, 4, 5 , Qifan Wu 1, 2, 3, 4, 5 , Chao Zhang 1, 2, 3, 4, 5 , Fengyu Zhao 1, 2, 3, 4, 5
Affiliation  

Hydrodeoxygenation (HDO) of lignin-derived phenolic compounds is one of the most promising strategies for the practical conversion of biomass materials to chemicals and fuels. Several consecutive and parallel reactions such as hydrogenation, hydrogenolysis, dehydration and others occur in HDO and give various products over a wide distribution, depending on reaction conditions and catalysts used. It is necessary, therefore, to optimize reaction conditions and choose suitable catalysts for the selective synthesis of target products. Frequently used catalysts are multifunctional supported metal ones, in which different functions come from inherent and cooperative properties of their metal and support components. This article mainly reviews the state-of-the-art achievements of supported metal catalysts and the characteristics and actions of their active sites, working in the reactions involved in HDO of lignin-derived phenolic compounds. We first survey the present research situation of HDO reactions with reaction conditions, most studied model substrates and heterogeneous catalysts and reaction mechanisms proposed so far. Then we focus on the functions of different active sites in supported metal catalysts, such as metal sites, acid sites (liquid or solid) and defective sites on oxide supports, which show their intrinsic (independent) and cooperative (synergistic) characteristics in HDO reactions.

中文翻译:

木质素衍生的酚类化合物的加氢脱氧–负载型金属催化剂活性位的综述

木质素衍生的酚类化合物的加氢脱氧(HDO)是将生物质材料实际转化为化学品和燃料的最有前景的策略之一。在HDO中会发生数个连续且平行的反应,例如氢化,氢解,脱水等,这些反应取决于所使用的反应条件和催化剂,会在较宽的分布范围内产生各种产物。因此,有必要优化反应条件并选择合适的催化剂用于目标产物的选择性合成。常用的催化剂是多官能负载的金属催化剂,其中不同的功能来自其金属和载体组分的固有和协同性能。本文主要综述了负载型金属催化剂的最新进展及其活性位点的特征和作用,并研究了木质素衍生的酚类化合物的HDO反应。我们首先调查了具有反应条件的HDO反应的研究现状,到目前为止研究最多的是研究的模型底物和非均相催化剂以及反应机理。然后,我们重点研究了负载型金属催化剂中不同活性位点的功能,例如金属位点,酸位点(液体或固体)和氧化物载体上的缺陷位点,它们在HDO反应中表现出其固有(独立)和协同(协同)特性。 。我们首先调查了具有反应条件的HDO反应的研究现状,到目前为止研究最多的是研究的模型底物和非均相催化剂以及反应机理。然后,我们重点研究了负载型金属催化剂中不同活性位点的功能,例如金属位点,酸位点(液体或固体)和氧化物载体上的缺陷位点,它们在HDO反应中表现出内在的(独立的)和协同的(协同的)特性。 。我们首先调查了具有反应条件的HDO反应的研究现状,到目前为止研究最多的是研究的模型底物和非均相催化剂以及反应机理。然后,我们重点研究了负载型金属催化剂中不同活性位点的功能,例如金属位点,酸位点(液体或固体)和氧化物载体上的缺陷位点,它们在HDO反应中表现出内在的(独立的)和协同的(协同的)特性。 。
更新日期:2020-11-13
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