Activated carbons with molecular sieve membranes and their use as adsorbents in smoking articles

A composite for use in smoking articles such as cigarettes is described comprising a zeolite membrane coated upon an activated carbon-containing substrate. The substrate may be a fiber, fabric, particle, granule or monolith. The composite is prepared by contacting zeolite precursors with the substra...

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Bibliographic Details
Main Authors FOURNIER JAY A, PAINE JOHN B.III, LUAN ZHAOHUA, SHERWOOD TIMOTHY S, ZHUANG SHUZHONG
Format Patent
LanguageEnglish
Published 23.11.2006
Subjects
CIGARETTES
CIGARS
HUMAN NECESSITIES
MATCH BOXES
SMOKERS' REQUISITES
TOBACCO
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Summary:A composite for use in smoking articles such as cigarettes is described comprising a zeolite membrane coated upon an activated carbon-containing substrate. The substrate may be a fiber, fabric, particle, granule or monolith. The composite is prepared by contacting zeolite precursors with the substrate and hydrothermally synthesizing the membrane upon the substrate. The substrate may be pretreated to provide activation sites for adhesion and growth of the membrane. By selection of the zeolite components, the composite may be tailored to selectively remove constituents of tobacco smoke while simultaneously controlling access to the substrate thereby prolonging the shelf life of the activated carbons.
Bibliography:Application Number: US20050311420