Ir-Based Bimetallic Catalysts for Hydrogen Production through Glycerol Aqueous-Phase Reforming

Catalysts

Miguel Ruiz-Gómez¹  Francisco Espinosa-Moreno²  JuanC. Chavarria-Hernandez²  Saúl Tlecuitl-Beristain³  Putrakumar Balla⁴  Wenjie Shen⁴ 

[1] CONACYT-Departamento de Física Aplicada, CONACYT-CINVESTAV-IPN, 97310 Mérida, Yucatán, Mexico;Centro de Investigación Científica de Yucatán, Parque Científico y Tecnológico de Yucatán, Carretera Sierra Papacal–Chuburna Puerto, km 5. Sierra Papacal, 97302 Mérida, Yucatán, Mexico;Ingeniería en Biotecnología, Universidad Politécnica de Tlaxcala, San Pedro Xalcatzinco, 90180 Tepeyanco, Tlaxcala, Mexico;State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457-Zhong Shan Road, Dalian 116023, China;

关键词: iridium;    glycerol;    aqueous-phase reforming;    hydrogen production;   

DOI  :  10.3390/catal8120613

来源: DOAJ

【 摘 要 】

Iridium, Iridium-Nickel and Iridium-Copper catalysts were prepared by incipient wetness impregnation and evaluated in the aqueous-phase reforming of glycerol using La₂O₃ or CeO₂ as supports. The catalysts were characterized by N₂ physisorption, XRD, H₂-TPR, XPS, and EDS. The reactions were carried out in a fixed bed reactor feeding a solution of glycerol (10 wt %) in water, at 270 °C and 58 bar. All IrNi catalysts showed higher activity than Ir and IrCu, and in general, La₂O₃ catalysts showed a better performance when compared to CeO₂ catalysts. The highest hydrogen production yield was reached by bimetallic IrNi catalysts with over 250 µmol min⁻¹ g_cat⁻¹ for La₂O₃ and 150 µmol min⁻¹ g_cat⁻¹ for CeO₂.

【 授权许可】

Unknown