Advancements in biomass gasification research utilizing iron-based oxygen carriers in chemical looping: A review

材料导报:能源(英文) Pub Date : 2024-08-01 DOI:10.1016/j.matre.2024.100282

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Abstract

Biomass, recognized as renewable green coal, is pivotal for energy conservation, emission reduction, and dual-carbon objectives. Chemical looping gasification, an innovative technology, aims to enhance biomass utilization efficiency. Using metal oxides as oxygen carriers regulates the oxygen-to-fuel ratio to optimize synthesis product yields. This review examines various oxygen carriers and their roles in chemical looping biomass gasification, including natural iron ore types, industrial by-products, cerium oxide-based carriers, and core-shell structures. The catalytic, kinetic, and phase transfer properties of iron-based oxygen carriers are analyzed, and their catalytic cracking capabilities are explored. Molecular interactions are elucidated and system performance is optimized by providing insights into chemical looping reaction mechanisms and strategies to improve carrier efficiency, along with discussing advanced techniques such as density functional theory (DFT) and reactive force field (ReaxFF) molecular dynamics (MD). This paper serves as a roadmap for advancing chemical looping gasification towards sustainable energy goals.

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在化学循环中利用铁基氧载体的生物质气化研究进展：综述

生物质是公认的可再生绿色煤炭，在实现节能减排和双碳目标方面具有举足轻重的作用。化学循环气化是一项创新技术，旨在提高生物质的利用效率。使用金属氧化物作为氧载体可以调节氧与燃料的比例，从而优化合成产品的产量。本综述探讨了各种氧载体及其在化学循环生物质气化中的作用，包括天然铁矿石类型、工业副产品、基于氧化铈的载体以及核壳结构。分析了铁基氧载体的催化、动力学和相转移特性，并探讨了它们的催化裂解能力。通过深入探讨化学循环反应机制和提高载体效率的策略，以及讨论密度泛函理论 (DFT) 和反应力场 (ReaxFF) 分子动力学 (MD) 等先进技术，阐明了分子间的相互作用，并优化了系统性能。本文是推动化学循环气化技术实现可持续能源目标的路线图。

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