Methods for enhancing the mesoporosity of zeolite-containing materials
AssigneeRive Technology, Inc.
InventorsJavier Garcia Martinez, Lawrence B. Dight, Barry K. Speronello
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Abstract
Methods for enhancing the mesoporosity of a zeolite-containing material. Such methods may comprise contacting a composite shaped article containing at least one zeolite and at least one non-zeolitic material with at least one pH controlling agent and at least one surfactant. Such methods may be performed under conditions sufficient to increase the pore volume of at least one 10 angstrom subset of mesoporosity.
Claims29
A method of preparing a shaped zeolitic material with enhanced mesoporosity, said method comprising:
- (a) synthesizing a composite shaped article comprising at least one zeolite and at least one non-zeolitic material;
- and
- (b) contacting said composite shaped article with at least one pH controlling agent and at least one surfactant under conditions sufficient to increase the pore volume of at least one 10 angstrom subset of mesoporosity in said composite shaped article, thereby forming said shaped zeolitic material with enhanced mesoporosity, wherein said pH controlling agent comprises an acid or a base,
- wherein said contacting of step (b) causes a net mesopore increase in said zeolite of said composite shaped article.
A method of preparing a shaped zeolitic material with enhanced mesoporosity, said method comprising:
- (a) synthesizing a composite shaped article comprising at least one zeolite and at least one non-zeolitic material, wherein said zeolite comprises faujasite, mordenite, ZSM-5, CHA, or mixtures thereof;
- and
- (b) contacting said composite shaped article with an acid to form an acid-treated shaped article;
- and
- (c) contacting said acid-treated shaped article with a base to form a base-treated shaped article,
- wherein said base-treated shaped article has an overall mesoporosity that is at least 0.05 cc/g greater than said composite shaped article.
A method of preparing a shaped zeolitic material with enhanced mesoporosity, said method comprising:
- (a) synthesizing a composite shaped article comprising at least one zeolite and at least one non-zeolitic material;
- and
- (b) contacting said composite shaped article with an acid to form an acid-treated shaped article;
- and
- (c) contacting said acid-treated shaped article with a base to form a base-treated shaped article,
- wherein said base-treated shaped article has an overall mesoporosity that is greater than said composite shaped article.
Dependencies are inferred from the claim text.