Research progress of catalysts for direct coal liquefaction

IF 13.1 1区 化学 Q1 Energy
Wei Song , Penggao Liu , Xinyue Chen , Ting Wang , Chunrong He , Rui Hao , Kaiyu Liu
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Abstract

Coal direct liquefaction technology is a crucial contemporary coal chemical technology for efficient and clean use of coal resources. The development of direct coal liquefaction technology and the promotion of alternative energy sources are important measures to guarantee energy security and economic security. However, several challenges need to be addressed, including low conversion rate, inadequate oil yield, significant coking, demanding reaction conditions, and high energy consumption. Extensive research has been conducted on these issues, but further exploration is required in certain aspects such as pyrolysis of macromolecules during the liquefaction process, hydrogen activation, catalysts’ performance and stability, solvent hydrogenation, as well as interactions between free radicals to understand their mechanisms better. This paper presents a comprehensive analysis of the design strategy for efficient catalysts in coal liquefaction, encompassing the mechanism of coal liquefaction, catalyst construction, and enhancement of catalytic conversion efficiency. It serves as a comprehensive guide for further research endeavors. Firstly, it systematically summarizes the conversion mechanism of direct coal liquefaction, provides detailed descriptions of various catalyst design strategies, and especially outlines the catalytic mechanism. Furthermore, it addresses the challenges and prospects associated with constructing efficient catalysts for direct coal liquefaction based on an understanding of their action mechanisms.

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煤直接液化催化剂的研究进展
煤炭直接液化技术是当代高效清洁利用煤炭资源的重要煤化工技术。发展煤直接液化技术,推广替代能源,是保障能源安全和经济安全的重要措施。然而,煤直接液化技术需要解决转化率低、产油量不足、结焦严重、反应条件苛刻、能耗高等难题。针对这些问题已经开展了广泛的研究,但在某些方面还需要进一步探索,如液化过程中大分子的热解、氢活化、催化剂的性能和稳定性、溶剂加氢以及自由基之间的相互作用,以便更好地了解其机理。本文从煤炭液化机理、催化剂结构、提高催化转化效率等方面全面分析了煤炭液化高效催化剂的设计策略。它对进一步的研究工作具有全面的指导作用。首先,它系统地总结了煤直接液化的转化机理,详细介绍了各种催化剂设计策略,特别是概述了催化机理。此外,在了解煤直接液化催化剂作用机理的基础上,探讨了构建高效煤直接液化催化剂所面临的挑战和前景。
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来源期刊
Journal of Energy Chemistry
Journal of Energy Chemistry CHEMISTRY, APPLIED-CHEMISTRY, PHYSICAL
CiteScore
19.10
自引率
8.40%
发文量
3631
审稿时长
15 days
期刊介绍: The Journal of Energy Chemistry, the official publication of Science Press and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, serves as a platform for reporting creative research and innovative applications in energy chemistry. It mainly reports on creative researches and innovative applications of chemical conversions of fossil energy, carbon dioxide, electrochemical energy and hydrogen energy, as well as the conversions of biomass and solar energy related with chemical issues to promote academic exchanges in the field of energy chemistry and to accelerate the exploration, research and development of energy science and technologies. This journal focuses on original research papers covering various topics within energy chemistry worldwide, including: Optimized utilization of fossil energy Hydrogen energy Conversion and storage of electrochemical energy Capture, storage, and chemical conversion of carbon dioxide Materials and nanotechnologies for energy conversion and storage Chemistry in biomass conversion Chemistry in the utilization of solar energy
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