Fe Doped Bimodal Macro/Mesoporous Nickel-Based Catalysts for CO2–CH4 Reforming

• Published in: Industrial & engineering chemistry research 2022-07, Vol.61 (29), p.10347-10356
• Main Authors: Lyu, Linghui, Zhang, Jing, Ma, Qingxiang, Makpal, Shengene, Gao, Xinhua, Fan, Hui, Zhang, Jianli, Sun, Jian, Zhao, Tian-sheng
• Format: Article
• Language: English
• Subjects: Applied Chemistry
• ISSN: 0888-5885; 1520-5045
• DOI: 10.1021/acs.iecr.2c00578

Dry reforming of methane (DRM) is an important process to generate syngas for synthesis of clean liquid fuels and valuable chemicals, but the quick carbon deposition-induced catalyst deactivation hampers its further industrial application. In this paper, Fe doped Ni/Al2O3 catalysts with bimodal-pore stucture are prepared via a one-pot evaporation-induced self-assembly (EISA) method. Characterization results demonstrate that the unique bimodal-pore architecture and the precisely controlled interaction between Ni and Fe guarantee the high activity and excellent stability of the Ni-based catalysts in the DRM reaction. The catalytic performances were tested under atmospheric pressure at 700 °C. The result indicated that the catalyst with a Fe/Ni ratio = 0.5 exhibited the best catalytic performance and carbon deposition resistance after the long-term stability reaction of 100 h, and the conversion rate of CH4 and CO2 remains 76.8% and 85.6%, respectively. The novel strategy for the rational design of Ni-based catalysts will pave the way for the development of the DRM catalytic system.