Amorphous Ni-B/SiO2 catalyst prepared by microwave heating and its catalytic activity in acrylonitrile hydrogenation

作者：Liu B; Qiao MH; Wang JQ; Xie SH; Li HX; Fan KN^*

来源：Journal of Chemical Technology and Biotechnology, 2003, 78(5): 512-517.

DOI：10.1002/jctb.817

• microwave heating
• Ni-B/SiO2
• amorphous alloy
• acrylonitrile
• hydrogenation

Microwave heating was utilized in the preparation of amorphous Ni-B/SiO2 catalysts. After wetness impregnation with NiCl2 aqueous solution, the catalyst precursor was dried at 383 K, followed by microwave heating and KBH4 reduction. Liquid phase hydrogenation of acrylonitrile was employed as the probe reaction. While ICP, XRD, XPS and turnover frequency results did not reveal discernable structural and electronic differences between the active components of the catalysts with or without microwave heating, SEM uncovered the formation of smaller Ni-B alloy particles with microwave heating, leading to a higher concentration of active sites and greater thermal stability as verified by H-2 chemisorption and DSC.

• 出版日期2003-5
• 单位复旦大学