Molecular sieve composition, its preparation and application thereof
AssigneesChina Petroleum & Chemical Corporation, Sinopec Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd.
InventorsHui QUAN, Xiaosi WANG, Zhaoyang SONG, Wei ZHAO, Zhiyin ZHANG, Guoquan SUN, Lindong LIU, Shaojian HU
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Abstract
The present application relates to a molecular sieve composition, its preparation and application thereof. The molecular sieve composition comprises a molecular sieve having an embedded structure composed of a molecular sieve having a TON structure and a 5 A-type molecular sieve. The molecular sieve composition has dual functions of adsorption and hydroisomerization.
Claims24
A molecular sieve composition, comprising a molecular sieve having an embedded structure composed of a molecular sieve having a TON structure and a 5A-type molecular sieve, preferably the molecular sieve having a TON structure is embedded onto at least a part of the surface of the 5A-type molecular sieve.
A method for preparing a molecular sieve having an embedded structure, comprising the steps of:
- (1) contacting a silicon source, an aluminum source, and an alkali source in the presence of a templating agent, a molecular sieve having a TON structure, and water to obtain a gel mixture, and
- (2) carrying out hydrothermal crystallization on the gel mixture, and then washing, drying and calcining to obtain a first molecular sieve having an embedded structure.
Dependencies are inferred from the claim text.