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Rhenium borides (Re3B and ReB2) mechanosynthesis and their use as a catalyst for H2 production from biomass pyrolysis
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2021-05-01 , DOI: 10.1016/j.materresbull.2020.111180
M.G. Granados-Fitch , J.M. Quintana-Melgoza , E.A. Juarez-Arellano , M. Avalos-Borja

Abstract In this study, we report on Re3B and ReB2 mechanosynthesis. Re3B and ReB2 are used as catalysts in H2 production by coconut shell pyrolysis from 500 to 800 °C and using 5, 10, and 20 wt % of catalyst. H2, CH4, and CO production is monitored using gas chromatography with a thermal conductivity detector. Re3B shows the highest catalytic activity for H2 production at 800 °C and 10 wt % of catalyst. Furthermore, Re3B reaches 77.4 % H2 yield at optimal conditions, the highest value reported in the literature. Re3B and ReB2 were also characterized by temperature-programmed reduction (TPR) and Fourier transform infrared spectroscopy (FTIR). We propose a scheme for molecular hydrogen formation based on TPR and FTIR characterizations, thermodynamics analysis, and H2 production.

中文翻译:

硼化铼(Re3B 和 ReB2)机械合成及其作为生物质热解制氢催化剂的用途

摘要 在这项研究中,我们报告了 Re3B 和 ReB2 的机械合成。Re3B 和 ReB2 用作通过椰子壳热解从 500 到 800 °C 并使用 5、10 和 20 wt% 的催化剂生产 H2 的催化剂。使用带有热导检测器的气相色谱法监测 H2、CH4 和 CO 的产生。Re3B 在 800 °C 和 10 wt% 的催化剂下显示出最高的 H2 生产催化活性。此外,Re3B 在最佳条件下达到 77.4% 的 H2 产率,这是文献中报道的最高值。Re3B 和 ReB2 还通过程序升温还原 (TPR) 和傅里叶变换红外光谱 (FTIR) 进行表征。我们提出了基于 TPR 和 FTIR 表征、热力学分析和 H2 生成的分子氢形成方案。
更新日期:2021-05-01
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