Title:
PROCESS FOR PRODUCING ZEOLITES WITH BEA, MTW, AND MFI STRUCTURES ADDITIONALLY CONTAINING MESOPORES AND MACROPORES USING CYCLIC DIAMMONIUM
Document Type and Number:
WIPO Patent Application WO/2010/087633
Kind Code:
A2
Abstract:
The present invention relates to the synthesis of zeolites and zeotype molecular sieves having an extremely small crystal size of 5 to 50 nm by adding a cyclic diammonium to a zeolite synthesis composition. Further, the present invention involves molecular sieve materials which are activated or functionalized by a dealumination, an ion exchange, and other post-treatments, and a catalytic activity thereof. The nanocrystalline molecular sieve synthesized by the present invention has mesopores (2 < diameter < 50 nm) and macropores (50 nm < diameter) existing among molecular sieve crystals containing micropores (diameter < 1 nm), thereby increasing molecular diffusion and significantly increasing the activity in the function of a catalyst and an ion-exchange resin as compared to conventional zeolites. Further, the present invention enables the easy diffusion and adsorption of giant molecules, and thus exhibits a significantly high reactivity in the alkylation reaction, acylation reaction, etc., of large organic molecules.
Inventors:
RYOO RYONG (KR)
CHOI MINKEE (KR)
NA KYUNGSU (KR)
CHOI MINKEE (KR)
NA KYUNGSU (KR)
Application Number:
PCT/KR2010/000529
Publication Date:
August 05, 2010
Filing Date:
January 29, 2010
Export Citation:
Assignee:
KOREA ADVANCED INST SCI & TECH (KR)
RYOO RYONG (KR)
CHOI MINKEE (KR)
NA KYUNGSU (KR)
RYOO RYONG (KR)
CHOI MINKEE (KR)
NA KYUNGSU (KR)
International Classes:
C01B39/02
Foreign References:
| US5271922A | 1993-12-21 | |||
| US5271921A | 1993-12-21 | |||
| US5273736A | 1993-12-28 | |||
| US5501848A | 1996-03-26 |
Attorney, Agent or Firm:
KOREANA PATENT FIRM (KR)
특허법인코리아나 (KR)
특허법인코리아나 (KR)
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