生物质热解用生物炭原位合成Zn-Zr金属骨架镍基催化剂

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-03-12 DOI:10.1016/j.ijhydene.2025.03.107

Yucheng Fang, Xiawen Yu, Aobo Wan, Yun He, Zhenhua Qin, Jianfen Li

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引用次数: 0

摘要

本研究旨在改进镍基催化剂用于生物质热解制合成气。采用溶胶-凝胶法制备了复合（Ni/Zn-Zr- bc）和金属（Ni/Zn-Zr）载体两种催化剂。采用XRD、SEM、BET和TPR分析了催化剂的形貌和组成变化。比较了生物质碳掺杂催化剂与未掺杂催化剂的性能。与未掺杂的催化剂相比，生物质碳掺杂催化剂的氢产率显著提高42%。在800°C以上的温度下，900°C的最佳产气量为0.71 L/g，停留时间为20 min，生物质碳比为0.75，表现出良好的催化剂稳定性。性能的提高是由于生物炭的抗氧化能力，它保留了活性金属位点，减少了氧化态，提高了反应效率。

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In-situ synthesis of Zn–Zr metal framework Ni-based catalysts on biochar for biomass pyrolysis

This study aimed to enhance nickel-based catalysts for biomass pyrolysis to produce syngas. Two types of catalysts, composite (Ni/Zn-Zr-BC) and metal (Ni/Zn–Zr) supports, were developed via the sol-gel method. The catalysts' morphology and composition changes were analyzed using XRD, SEM, BET, and TPR. The performance of the biomass carbon-doped catalysts was compared to their non-doped counterparts. The biomass carbon-doped catalysts exhibited a significant 42% increase in hydrogen yield compared to non-doped counterparts. At temperatures above 800 °C, the optimal gas yield reached 0.71 L/g at 900 °C with a 20-min residence time and a biomass carbon ratio of 0.75, demonstrating robust catalyst stability. The performance improvement is attributed to biochar's antioxidative capability, which preserves active metal sites and reduces oxidation states, enhancing reaction efficiency.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.