Catalytic hydrogenolysis of formic acid to hydrogen over heterogeneous catalysts: A review on modification strategies, catalyst deactivation and reaction mechanism

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2024-09-27 DOI:10.1016/j.apcata.2024.119972

{"title":"Catalytic hydrogenolysis of formic acid to hydrogen over heterogeneous catalysts: A review on modification strategies, catalyst deactivation and reaction mechanism","authors":"","doi":"10.1016/j.apcata.2024.119972","DOIUrl":null,"url":null,"abstract":"<div><div>Hydrogen is a renewable energy carrier and one of the most competitive fuel options for the future. Formic acid, due to its high gravimetric and volumetric hydrogen capacities (4.4 wt% and 53 g H<sub>2</sub>·L<sup>−1</sup>), is a viable hydrogen carrier. Formic acid can undergo hydrogen release and storage reactions when subjected to suitable catalysts. This paper reviews heterogeneous catalysts for the dehydrogenation of formic acid, focusing on catalyst modification, catalyst deactivation, and the reaction mechanism of formic acid. The modification strategies enhance catalyst performance by influencing catalyst size, composition, and electronic configuration through synergistic effects between metals and interactions between the support and the metal. The active sites are blocked by CO produced from side reactions, leading to catalyst poisoning. By adding Mo and altering the reaction alkalinity, CO production can be reduced, thereby preventing catalyst poisoning. Currently, there are two main mechanisms for formic acid decomposition. One mechanism involves adsorption and decomposition via the formate anion. The other involves decomposition and reorganization through a formic acid ester intermediate. This review summarizes the research progress on heterogeneous catalysts and suggests that Mo<sub>2</sub>C catalysts should be a focus for further study.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X24004174","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Hydrogen is a renewable energy carrier and one of the most competitive fuel options for the future. Formic acid, due to its high gravimetric and volumetric hydrogen capacities (4.4 wt% and 53 g H₂·L⁻¹), is a viable hydrogen carrier. Formic acid can undergo hydrogen release and storage reactions when subjected to suitable catalysts. This paper reviews heterogeneous catalysts for the dehydrogenation of formic acid, focusing on catalyst modification, catalyst deactivation, and the reaction mechanism of formic acid. The modification strategies enhance catalyst performance by influencing catalyst size, composition, and electronic configuration through synergistic effects between metals and interactions between the support and the metal. The active sites are blocked by CO produced from side reactions, leading to catalyst poisoning. By adding Mo and altering the reaction alkalinity, CO production can be reduced, thereby preventing catalyst poisoning. Currently, there are two main mechanisms for formic acid decomposition. One mechanism involves adsorption and decomposition via the formate anion. The other involves decomposition and reorganization through a formic acid ester intermediate. This review summarizes the research progress on heterogeneous catalysts and suggests that Mo₂C catalysts should be a focus for further study.

查看原文本刊更多论文

在异相催化剂上催化甲酸加氢分解为氢气：改性策略、催化剂失活和反应机理综述

氢是一种可再生能源载体，也是未来最具竞争力的燃料之一。甲酸具有较高的重量氢容量和体积氢容量（4.4 wt% 和 53 g H2-L-1），是一种可行的氢载体。在合适的催化剂作用下，甲酸可以发生氢气释放和储存反应。本文综述了用于甲酸脱氢的异相催化剂，重点介绍了催化剂改性、催化剂失活和甲酸反应机理。改性策略通过金属之间的协同效应以及载体与金属之间的相互作用，影响催化剂的尺寸、组成和电子构型，从而提高催化剂的性能。副反应产生的 CO 会堵塞活性位点，导致催化剂中毒。通过添加 Mo 和改变反应碱度，可以减少 CO 的产生，从而防止催化剂中毒。目前，甲酸分解主要有两种机制。一种机制是通过甲酸阴离子进行吸附和分解。另一种是通过甲酸酯中间体进行分解和重组。本综述总结了有关异相催化剂的研究进展，并建议将 Mo2C 催化剂作为进一步研究的重点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.