Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By alkyl or aryl transfer between molecules – e.g.,...
Patent
1992-04-27
1993-03-02
Dees, Carl F.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By alkyl or aryl transfer between molecules, e.g.,...
208114, 208119, 208120, 585415, 585417, 585444, 585446, 585467, 585470, 585480, 585481, 585640, 585654, C07C 552, B01J 2904
Patent
active
051911370
ABSTRACT:
There is provided a molecular sieve coated with a non-oxide ceramic. The molecular sieve may be a zeolite, such as ZSM-5, and the ceramic coating may be, e.g., boron nitride. The coated molecular sieve may be prepared by contacting the molecular sieve with a ceramic precursor material comprising a thermally decomposable material, such as polyborazylene, and thermally decomposing this thermally decomposable material. The coated molecular sieves may be used as organic conversion catalysts. The non-oxide ceramic coating may alter or enhance the shape-selective properties of the molecular sieve by providing a diffusion barrier to molecules.
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Dees Carl F.
Kenehan, Jr. Edward F.
McKillop Alexander J.
Mobil Oil Corp.
Speciale Charles J.
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