Advertisement

Catalysis Letters

, Volume 36, Issue 3–4, pp 271–277 | Cite as

Synthesis, characterization and catalytic activity of ZAPO-5 and ZAPO-11

  • S. P. Elangovan
  • V. Krishnasamy
  • V. Murugesan
Article

Abstract

Zinc containing aluminophosphates (ZAPO-5 and ZAPO-11) were synthesized hydrothermally using triethylamine and dipropylamine as templates. Structures were confirmed from X-ray powder patterns and unit cell parameters were calculated by a standard least-squares refinement technique. The isomorphous substitution of zinc in the aluminophosphate framework is evidenced by the considerable increase in unit cell volume and from MAS-NMR spectra. Acidity was determined by the TPD-TGA method which shows three different strengths of acid sites. FT-IR, chemical analysis and BET surface area were also reported. The physico-chemical properties of the catalysts were correlated towards the vapour phase transformation of camphene and the results are fully discussed.

Keywords

ZAPO-5 ZAPO-11 molecular sieves camphene solid state27Al and31P NMR 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    G.C. Bond, M.R. Gelsthorpe, K.S.W. Sing and C.R. Theocharis, J. Chem. Soc. Chem. Commun. (1985) 1056.Google Scholar
  2. [2]
    E.M. Flanigen, B.M. Lok and R.L. Patton, Pure Appl. Chem. 58 (1986) 1351.Google Scholar
  3. [3]
    E.M. Flanigen, B.M. Lok, R.L. Patton and S.T. Wilson, Eur. Pat. Appl. EP 158,976.Google Scholar
  4. [4]
    J. Meusinger, H. Vinek and J.A. Lercher, J. Mol. Catal. 87 (1994) 263.Google Scholar
  5. [5]
    R.V. Ballmoos and J.B. Higgins,Collection of Simulated X-ray Powder Patterns of Zeolites (Butterworth, London, 1990).Google Scholar
  6. [6]
    S.P. Elangovan and V. Rrishnasamy, Indian J. Chem. 32 A (1993) 1041.Google Scholar
  7. [7]
    S.P. Elangovan, PhD Thesis (1994).Google Scholar
  8. [8]
    C.S. Blackwell and R.L. Patton, J. Phys. Chem. 88 (1984) 6135.Google Scholar
  9. [9]
    M.E. Davis, C. Montes, P.E. Hathaway and J.M. Graces, Stud. Surf. Sci. Catal. 49 A (1989) 249.Google Scholar
  10. [10]
    Ch. Minchev, V. Minkov, V. Penchev, H. Weyda and H. Lechert, J. Therm. Anal. 37 (1991) 171.Google Scholar
  11. [11]
    Y. Xu, P.J. Maddox and J.M. Thomas, Polyhedron 8 (1989) 819.Google Scholar
  12. [12]
    S.P. Elangovan, V. Krishnasamy and V. Murugesan, React. Kinet. Catal. Lett. 55 (1995) 153.Google Scholar
  13. [13]
    S.P. Elangovan, V. Krishnasamy and V. Murugesan, Indian J. Chem. 34 A (1995) 469.Google Scholar
  14. [14]
    A. Stanislaus and L.M. Yeddanapalli, Can. J. Chem. 50 (1972) 61.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1996

Authors and Affiliations

  • S. P. Elangovan
    • 1
  • V. Krishnasamy
    • 1
  • V. Murugesan
    • 1
  1. 1.Department of ChemistryAnna UniversityMadrasIndia

Personalised recommendations