Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (6): 1022.
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LI Jiang, QIAO Ming-Hua, DENG Jing-Fa
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Abstract: Amorphous Ni-B/γ-Al2O3 catalyst 1 is prepared with chemical reduction by KBH4 solution after wetness impregnation and desiccation at 70 ℃ first and then at 110 ℃ for thorough water removal. Its higher catalytic activity than amorphous Ni-B/γ-Al2O3 catalyst 2, prepared by conventional one-step desiccation procedure at 110 ℃, is identified in liquid-phase benzene hydrogenation to cyclohexane. Both catalysts are characterized by XRDand SEM, Ni-B/γ-Al2O3 catalyst 1 has a higher active specific surface area and dispersion degree, which can be assigned to more effective distribution of nickel salt over the support during desiccation, thus resulting in its superior activity in benzene hydrogenation.
Key words: Ni-B/γ-Al2O3 catalyst, Amorphous alloy, Benzene hydrogenation, Dispersion degree
CLC Number:
O643.1
TrendMD:
LI Jiang, QIAO Ming-Hua, DENG Jing-Fa . Effect of Desiccation of the Catalyst Precursor on the Performance of Amorphous Ni-B/γ-Al2O3 Catalyst[J]. Chem. J. Chinese Universities, 2001, 22(6): 1022.
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