Synthesis and regeneration of mesoporous Ni–Cu/Al2O4 catalyst in sub-kilogram-scale for methanol steam reforming reaction

Hsin Kai Huang, Yi Kai Chih, Wei Hsin Chen, Cheng Yu Hsu, Kai Jhei Lin, Hong Ping Lin, Chun Han Hsu

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

A green template-free method is proposed for the synthesis of mesoporous Ni–Cu/Al2O4 catalyst in sub-kilogram scale. In the convenient synthetic method, an intermediate is formed via electrostatic forces and hydrogen bonding interactions between the aluminate ions and the metal ions and/or metal hydroxides under suitable pH conditions. The desired Ni–Cu/Al2O4 composites, with Ni/Cu molar ratios of 10%, 20% and 30% of Cu at Cu/Al molar ratio of 10.0%, respectively, are then obtained from calcination. The nitrogen adsorption-desorption isotherms show that the Ni–Cu/Al2O4 composites have specific surface areas of 136–170 m2g-1. The Ni–Cu/Al2O4 products are used as catalyst materials in the methanol steam reforming (MSR) of hydrogen and are shown to have a high conversion efficiency (>99%), a low methane concentration, good stability, and a high hydrogen yield (H2/methanol molar ratio ≈ 3.0) at low reaction temperatures in the range of 200–300 °C. In addition, the coke formation on the catalyst surface is less than 1.0 wt% even after a reaction time of 30 h. Notably, the Ni–Cu/Al2O4 catalyst can be regenerated by calcination at 800 °C and retains a high methanol conversion efficiency of close to >99% when reused in MSR.

原文English
頁(從 - 到)37542-37551
頁數10
期刊International Journal of Hydrogen Energy
47
發行號88
DOIs
出版狀態Published - 2022 10月 30

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術

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