Invention Grant
- Patent Title: Zeolite production method
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Application No.: US14990431Application Date: 2016-01-07
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Publication No.: US10308516B2Publication Date: 2019-06-04
- Inventor: Tatsuya Okubo , Toru Wakihara , Zhendong Liu , Takahiko Takewaki , Kazunori Oshima , Daisuke Nishioka
- Applicant: MITSUBISHI CHEMICAL CORPORATION , THE UNIVERSITY OF TOKYO
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: MITSUBISHI CHEMICAL CORPORATION,THE UNIVERSITY OF TOKYO
- Current Assignee: MITSUBISHI CHEMICAL CORPORATION,THE UNIVERSITY OF TOKYO
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Leason Ellis LLP
- Priority: JP2013-143771 20130709; JP2014-033684 20140225
- Main IPC: C01B39/54
- IPC: C01B39/54 ; C01B39/48 ; B01J29/70 ; B01J29/83 ; C01B39/10 ; B01J29/06 ; C01B39/02 ; B01J29/85 ; B01J8/08 ; B01J29/76 ; C01B39/04 ; C01B39/46 ; B01J19/24

Abstract:
Provided is a method for continuous production of zeolite in which a starting material is continuously supplied to a tubular reactor to produce an aluminophosphate zeolite that contains, in the framework structure, at least aluminum atoms and phosphorus atoms or an aluminosilicate zeolite having 5≤SiO2/Al2O3≤2000. The tubular reactor is heated using a heat medium; a ratio (volume)/(lateral surface area) of the volume (inner capacity) to the lateral surface area of the tubular reactor is 0.75 cm or smaller; and seed crystals are added to the starting material. Through using a small-diameter tubular reactor and heating with a heat medium, it becomes possible to heat sufficiently the entirety of a starting material (zeolite precursor gel) in a short time, and to allow reaction to proceed at a high rate. The occurrence of irregular pressure fluctuations during continuous production of the zeolite can be prevented by adding seed crystals.
Public/Granted literature
- US20160115039A1 ZEOLITE PRODUCTION METHOD Public/Granted day:2016-04-28
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