Patent Number: 7,824,657

Title: Fabrication of hierarchical zeolites

Abstract: A method for producing zeolite or zeotype crystals with a hierarchical pore system having both pores with average diameter between 0.3-2 nm and pores with an average diameter size larger than 4 nm in diameter, comprising the steps of applying a carbohydrate or a carbohydrate solution onto a zeolite precursor material or into a zeolite precursor composition, partly or fully decomposing the carbohydrate, crystallizing the zeolite, removing the partly or fully decomposed carbohydrate by calcination or combustion.

Inventors: Christensen; Claus Hviid (Lynge, DK), Zhu; Kake (Shanghai, CN), Kegnaes; Marina (Copenhagen O, DK), Egeblad; Kresten (Valby, DK)

Assignee: Haldor Topsoe A/S

International Classification: C01B 39/02 (20060101); C01B 33/02 (20060101)

Expiration Date: 2019-11-02 0:00:00