Invention Grant
US09573116B2 Synthesis of ZSM-58 crystals with improved diffusivity for use in gas separations
有权
合成具有改进扩散性的ZSM-58晶体,用于气体分离
- Patent Title: Synthesis of ZSM-58 crystals with improved diffusivity for use in gas separations
- Patent Title (中): 合成具有改进扩散性的ZSM-58晶体,用于气体分离
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Application No.: US14573177Application Date: 2014-12-17
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Publication No.: US09573116B2Publication Date: 2017-02-21
- Inventor: Ivy D. Johnson , Tilman W. Beutel , Peter I. Ravikovitch , Harry W. Deckman , Jack W. Johnson , Jean W. Beeckman , Natalie A. Fassbender , Nadya A Hrycenko , Randolph J. Smiley
- Applicant: Ivy D. Johnson , Tilman W. Beutel , Peter I. Ravikovitch , Harry W. Deckman , Jack W. Johnson , Jean W. Beeckman , Natalie A. Fassbender , Nadya A Hrycenko , Randolph J. Smiley
- Applicant Address: US NJ Annandale
- Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
- Current Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
- Current Assignee Address: US NJ Annandale
- Agent David M. Weisberg
- Main IPC: C01B39/02
- IPC: C01B39/02 ; B01J20/30 ; C01B39/04 ; B01J20/18 ; B01J20/282 ; B01D53/02 ; C01B37/02 ; C01B39/48

Abstract:
Methods are provided for synthesizing ZSM-58 crystals with an improved morphology and/or an improved size distribution. By controlling the conditions during synthesis of the ZSM-58 crystals, crystals of a useful size with a narrow size distribution can be generated. Steaming the H-form DDR framework type crystals at a temperature from 426±° C. to 1100±° C. for a time period from about 30 minutes to about 48 hours can attain one or more of the following properties: a CH4 diffusivity of no more than 95% of the CH4 diffusivity of the unsteamed H-form DDR framework type crystals; an N2 BET surface area from 85% to 110% of the surface area of unsteamed H-form DDR framework type crystals; and an equilibrium CO2 sorption capacity from 80% to 105% of the equilibrium CO2 sorption capacity of unsteamed H-form DDR framework type crystals.
Public/Granted literature
- US20150182947A1 SYNTHESIS OF ZSM-58 CRYSTALS WITH IMPROVED DIFFUSIVITY FOR USE IN GAS SEPARATIONS Public/Granted day:2015-07-02
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