Zeolite compositions and preparation and use thereof

Details Zeolite compositions and preparation and use thereof Zeolite compositions and preparation and use thereof

2011-04-12

2011-04-12

Brunsman, David M (Department: 1732)

Chemistry of inorganic compounds

Zeolite

Isomorphic metal substitution

C423S085000, C423S122000, C423S123000, C423S140000, C423S141000, C423S277000, C423S326000, C423S328200, C502S060000, C502S202000, C502S240000, C502S242000, C502S258000, C502S260000

Reexamination Certificate

active

07922995

ABSTRACT:
This invention relates to novel compositions of zeolites or microporous metallosilicates characterized by a continuous spatial distribution of the metal and silicon in the crystals and characterized by a crystal surface enriched in silicon relative to the internal part of the same crystals. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. These novel zeolitic compositions can be used in various hydrocarbon conversion reactions. The crystalline metallosilicates can be selected from the group consisting of aluminosilicates, gallosilicates, ferrosilicates, titanosilicates and borosilicates.

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Wu Peng et al., “A Novel Titanosilicate with MWW Structure. I. Hydrothermal Synthesis, Elimination of ExtraFramework Titanium, and Characterizations.”, Journal of Physical Chemistry. B, Materials, Surfaces, Interfaces and Biophysical, Apr. 15, 2001, p. 2897-2905, vol. 105, No. 15, Washington D.C, US.
Wu Peng et al., “Hydrothermal synthesis of a novel titanosilicate with MWW topology.”, Chemistry Letters, Chemical Society of Japan, Jul. 5, 2000, p. 774-775, No. 7, Tokyo, Japan.

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