Catalysis Letters

, Volume 15, Issue 1–2, pp 95–103 | Cite as

Characterization of silica supported Ni and Mg basic carbonate catalyst precursors

  • G. P. Babu
  • K. D. Ghuge
  • S. V. Rammohan
  • V. Krishnan
  • A. N. Bhat


In Mg-doped Ni-silica catalyst precursors, magnesium preferentially precipitates as basic carbonate species by isomorphous substitution of nickel in basic nickel carbonate network. This has been confirmed by thermal and infrared studies. Presence of magnesium decreases the reducibility of neighbouring nickel atoms due to electronic effects and also acts as spacer/barrier thus minimizing sintering via nickel particle migration. As a consequence, the nickel dispersion in Mg/Ni-silica samples is higher than in Ni-silica samples at all SiO2/Ni ratios.


Ni/SiO2 Mg-doping thermal studies infrared studies 


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Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1992

Authors and Affiliations

  • G. P. Babu
    • 1
  • K. D. Ghuge
    • 1
  • S. V. Rammohan
    • 1
  • V. Krishnan
    • 1
  • A. N. Bhat
    • 1
  1. 1.Hindustan Lever Research CentreAndheri (E), BombayIndia

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