METHOD OF MAKING MODIFIED ACTIVATED CARBON

A modified activated carbon and a process for making a modified activated carbon from an activated carbon substrate are disclosed. The activated carbon substrate is pre-treated to make an exposed surface of the activated carbon substrate substantially hydrophilic, coated with a carbon precursor to f...

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Main Authors SKINNER, ILA, GEE, DIANE, L, KARLES, GEORGIOS, NEPOMUCENO, JOSE, LUAN, ZHAOHUA
Format Patent
LanguageEnglish
French
Published 11.10.2007
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Abstract A modified activated carbon and a process for making a modified activated carbon from an activated carbon substrate are disclosed. The activated carbon substrate is pre-treated to make an exposed surface of the activated carbon substrate substantially hydrophilic, coated with a carbon precursor to form a coated activated carbon, and then the coated activated carbon substrate is heated to carbonize the carbon precursor to from the modified activated carbon. The modified activated carbon comprises a uniform porous carbon membrane formed on an exposed surface of the activated carbon substrate. The carbon membrane can mediate the absorption and/or adsorption kinetics of the activated carbon substrate. The modified activated carbon, which can be incorporated into one or more components of a cigarette, can selectively remove gaseous constituents from mainstream smoke during smoking. L'invention concerne un charbon actif modifié et un processus de fabrication de charbon actif modifié à partir d'un substrat de charbon actif. Ce substrat de charbon actif est pré-traité de façon à rendre une surface exposée de ce substrat de charbon actif sensiblement hydrophile, revêtu d'un précurseur de charbon de façon à former un charbon actif revêtu, et ensuite ce substrat de charbon actif revêtu est chauffé afin de carboniser le précurseur de charbon actif pour former le charbon actif modifié. Ce charbon actif modifié comprend une membrane poreuse uniforme formée sur une surface exposée du substrat de charbon actif. Cette membrane de charbon peut médier la cinétique d'absorption et/ou d'adsorption du substrat de charbon actif. Le charbon actif modifié qui peut être incorporé dans un ou plusieurs composants d'une cigarette, peut sélectivement éliminer des constituants gazeux de la fumée principale lorsqu'une personne fume.
AbstractList A modified activated carbon and a process for making a modified activated carbon from an activated carbon substrate are disclosed. The activated carbon substrate is pre-treated to make an exposed surface of the activated carbon substrate substantially hydrophilic, coated with a carbon precursor to form a coated activated carbon, and then the coated activated carbon substrate is heated to carbonize the carbon precursor to from the modified activated carbon. The modified activated carbon comprises a uniform porous carbon membrane formed on an exposed surface of the activated carbon substrate. The carbon membrane can mediate the absorption and/or adsorption kinetics of the activated carbon substrate. The modified activated carbon, which can be incorporated into one or more components of a cigarette, can selectively remove gaseous constituents from mainstream smoke during smoking. L'invention concerne un charbon actif modifié et un processus de fabrication de charbon actif modifié à partir d'un substrat de charbon actif. Ce substrat de charbon actif est pré-traité de façon à rendre une surface exposée de ce substrat de charbon actif sensiblement hydrophile, revêtu d'un précurseur de charbon de façon à former un charbon actif revêtu, et ensuite ce substrat de charbon actif revêtu est chauffé afin de carboniser le précurseur de charbon actif pour former le charbon actif modifié. Ce charbon actif modifié comprend une membrane poreuse uniforme formée sur une surface exposée du substrat de charbon actif. Cette membrane de charbon peut médier la cinétique d'absorption et/ou d'adsorption du substrat de charbon actif. Le charbon actif modifié qui peut être incorporé dans un ou plusieurs composants d'une cigarette, peut sélectivement éliminer des constituants gazeux de la fumée principale lorsqu'une personne fume.
Author NEPOMUCENO, JOSE
KARLES, GEORGIOS
GEE, DIANE, L
SKINNER, ILA
LUAN, ZHAOHUA
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Snippet A modified activated carbon and a process for making a modified activated carbon from an activated carbon substrate are disclosed. The activated carbon...
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Title METHOD OF MAKING MODIFIED ACTIVATED CARBON
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