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Catalysis Letters

, Volume 134, Issue 3–4, pp 337–342 | Cite as

Influence of Copper on the Isomerization of Eugenol for as-Synthesized NiCuAl Ternary Hydrotalcites: An Understanding Through Physicochemical Study

  • C. M. Jinesh
  • V. Rives
  • D. Carriazo
  • Churchil A. Antonyraj
  • S. Kannan
Article

Abstract

Catalysts with the hydrotalcite-like structure and general formula NiCuAlyz-HT having (Ni + Cu)/Al atomic ratio of 3.0 with varying Ni:Cu atomic compositions (100:0–50:50) were synthesized, characterized and tested for isomerization of eugenol to isoeugenol. The decrease in the activity upon addition of copper to NiAl lattice is investigated through temperature programmed reduction and phenol adsorption.

Graphical Abstract

Conversion of eugenol over active NiAl hydrotalcite significantly decreased upon incorporation of Cu2+ in the NiAl binary lattice wherein substitution of 25 at% of Ni2+ by Cu2+ annihilated the isomerization activity. The decrease in the activity upon addition of copper to NiAl lattice is investigated through physiochemical studies.

Keywords

Eugenol isomerization NiCuAl ternary hydrotalcites Basicity Phenol adsorption 

Notes

Acknowledgments

S. K. thanks the Department of Science and Technology, New Delhi for financial assistance for a research project sponsored under SERC project scheme (No. SR/S1/PC-35/2003). D. C. acknowledges Universidad de Salamanca (Spain) for an undergraduate grant. D. C. and V. R. acknowledge Mr. A. Montero for some experimental results, and financial funds from ERDF and MEC (grant MAT2006-10800-C02-01).

Supplementary material

10562_2009_236_MOESM1_ESM.doc (2.9 mb)
Supplementary material 1 (DOC 2998 kb)

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • C. M. Jinesh
    • 1
  • V. Rives
    • 2
  • D. Carriazo
    • 2
  • Churchil A. Antonyraj
    • 1
  • S. Kannan
    • 1
  1. 1.Discipline of Inorganic Materials & Catalysis, Central Salt and Marine Chemicals Research InstituteCouncil of Scientific and Industrial Research (CSIR)GB Marg, BhavnagarIndia
  2. 2.GIR-QUESCAT, Departamento de Quimica InorganicaUniversidad de SalamancaSalamancaSpain

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