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Preparation Of Zirconium Diphosphonate-Phosphites With A Narrow Distribution Of Mesopores.

Published online by Cambridge University Press:  15 February 2011

G. Alberti ,
U. Costantino ,
R. Vivani  and
P. Zappelli
G. Alberti
Affiliation:
University of Perugia, Dept. of Chemistry, via Elce di Sotto 10, 06100 Perugia, Italy.
U. Costantino
Affiliation:
University of Perugia, Dept. of Chemistry, via Elce di Sotto 10, 06100 Perugia, Italy.
R. Vivani
Affiliation:
University of Perugia, Dept. of Chemistry, via Elce di Sotto 10, 06100 Perugia, Italy.
P. Zappelli
Affiliation:
Eniricerche S.p.A., via E. Ramarini 32, 00016 Monterotondo (Roma), Italy.
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Abstract

The presence of H3PO3 in the synthesis of zirconium diphosphonates in dimethylsulfoxide, other than the expected dilution of the pillars, which in turn gives rise to a certain degree of microporosity, may also induce the formation of a high percentag. of mesopores. E.g., compounds with high surface area(300–500 m2 /g) of which 60–70% is due to mesopores with diameters 20–40 Å and the remaining is due to micropores, were obtained. It was furthermore found that the distribution of the mesopores was fairly narrow. Compounds with micropores <3 Å and mesopores of 20–30 Å behave in practice as pure and narrow mesoporous solids;they are therefore of great interest as new molecular inorgano-organic sieves.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 233: Symposium U – Synthesis/Characterization and Novel Applications of Molecular Sieve Materials , 1991 , 101
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

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