Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (5): 828-837.DOI: 10.1016/S1872-2067(11)60486-5

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Research, development, and application of amorphous nickel alloy catalysts prepared by melt-quenching

ZONG Baoninga, MU Xuhonga, ZHANG Xiaoxina, MENG Xiangkuna, QIAO Minghuab   

  1. a State key Laboratory of Catalytic Materials and Reaction Engineering, Research Institute of Petroleum Processing, Sinopec, Beijing 100083, China;
    b Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
  • Received:2012-12-20 Revised:2013-05-20 Online:2013-05-06 Published:2013-05-06
  • Supported by:

    This work was supported by the National Basic Research Program of China (973 Program, 2012CB224806).

Abstract:

Raney Ni is one of the most widely used catalysts in the petrochemical industry. This material's intrinsic catalytic activity for hydrogenation may be enhanced by transforming the crystalline Ni-based alloy into an amorphous structure via melt-quenching. The meta-stability and low specific surface area of such amorphous alloys, however, can severely restrict their catalytic applications. Our work has demonstrated that the incorporation of rare earth (RE) elements increases the crystallization temperature of an amorphous Ni catalyst by 200 K. Related experimentation has determined that the specific surface area of such catalysts is dramatically increased by two orders of magnitude following alloying with Al and subsequent caustic leaching. In addition, by introducing a third metal as a promoter, the hydrogenation selectivity, corrosion resistance and magnetism of these materials may be precisely adjusted, giving rise to a family of skeletal amorphous Ni alloy catalysts, to which we apply the trade name SRNA. Among these catalysts, the SRNA-1 catalyst is used for the hydrogenation of pharmaceutical intermediates, SRNA-2 is employed for the hydrogenation of glucose into sorbitol, SRNA-3 is effective in the adsorptive desulfurization of gasoline and diesel and SRNA-4 is used for the purification of caprolactam. In addition, the SRNA-5 catalyst is useful in the hydrogenation of benzoic acid as a partial substitute for the costly Pd/C catalyst, reducing consumption of the latter during the hydrogenation process by almost 50%.

Key words: Amorphous alloy, Skeletal nickel, Hydrogenation, Desulfurization, Industrialization