Influence of Impregnation-Vacuum Filtration Conditions on Ni Dispersion and Activity of Ni-Cordierite for Hydrogenation

Abstract:

The influence of the preparation conditions of the impregnation-vacuum filtration method was investigated systematically on the Ni dispersion and the activity of Ni-cordierite structured catalysts in hydrogenation of m-dinitrobenzene to m-phenylenediamine. H₂-TPD measurement showed that the Ni dispersion has close relationship with the impregnation solution concentration of nickel nitrate, the impregnation time, the vacuum degree, the vacuum filtration time and the calcination temperature. The hydrogenation activity test and nitrogen physisorption investigation showed that the catalytic performance of Ni-cordierite is dependent upon the Ni dispersion and the chemisorption mode of m-dinitrobenzene on Ni particles.

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 312-319
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.312
• Online since: September 2013
• Authors: Shao Wen Liu, Zhuo Long Guan, Lei Qing, Jiu Ling Chen, Hai Nan Wang, Si Jiang Hu
• Keywords: Hydrogenation of m-Dinitrobenzene, Impregnation, Ni Dispersion, Ni-Cordierite Structured Catalyst, Vacuum Filtration

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