Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (04): 331-337.doi: 10.3866/PKU.WHXB20000408

• ARTICLE • Previous Articles     Next Articles

Study on Ni-supported Bifunctional Basic Zeolite Catalyst

Jiang Hui-Jun, Yang Chun, Meng Zhong-Yue   

  1. Department of Chemistry,Nanjing Normal University,Nanjing 210097
  • Received:1999-08-09 Revised:1999-11-02 Published:2000-04-15
  • Contact: Yang Chun

Abstract:

Ni-K/NaX catalysts were prepared by impregnating NaX with KOH and Ni(NO3)2 solution. The reducibility and the state of Ni species and the basicity of the samples were characterized by XRD、TPR、CO2-TPD and XPS techniques. It is shown that there is an interaction between metallic species and NaX, as well as KOH, which results in the easy reduction of Ni2+and the decrease in basicity of the sample. In the reaction of condensation of acetone to methyl isobutyl ketone(MIBK), the reason why a suitable balance between basicity and metallicity of catalysts is necessary for selective MIBK production has been revealed.

Key words: NaX zoelites, Ni, KOH, Basicity, Reducibility, Interaction