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Study on the Development of ZIF-8 Membranes for Gasoline Vapor Recovery

Li, Jing ; Zhong, Jing ; Huang, Weiqiu ; Xu, Rong ; Zhang, Qi ; Shao, Hui ; Gu, Xuehong Li, Jing (correspondence author)

Industrial & Engineering Chemistry Research, Mar 5, 2014, Vol.53(9), pp.3662-3668-3662-3668 [Peer Reviewed Journal]

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  • Title:
    Study on the Development of ZIF-8 Membranes for Gasoline Vapor Recovery
  • Author: Li, Jing ; Zhong, Jing ; Huang, Weiqiu ; Xu, Rong ; Zhang, Qi ; Shao, Hui ; Gu, Xuehong
  • Li, Jing (correspondence author)
  • Subjects: Separation ; Membranes ; Mathematical Models ; Recovery ; Gasoline ; Operating Temperature ; Reluctance ; Pressure Drop ; Design Principles (Mt) ; Analysis (MD) ; Chemical Analysis (Ep) ; Chemical Analysis (Ed) ; Chemical Analysis (EC)
  • Is Part Of: Industrial & Engineering Chemistry Research, Mar 5, 2014, Vol.53(9), pp.3662-3668-3662-3668
  • Description: The recovery of gasoline vapor is still a major challenge in the petrochemical industry. In this study, a zeolitic imidazolate frameworks (ZIFs) membrane has been developed and first applied to gasoline vapor recovery. Zeolitic imidazole framework (ZIF-8) membranes were fabricated by a facile solvothermal seed growth method on ZrO sub(2) supports. X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis measurements were conducted to study the morphologies, structure, and physical and chemical properties of ZIF-8 membranes. The effects of trans-membrane pressure drop, operating temperature, feed concentration, and stage cut on the separation performances of ZIF-8 membranes were systematically investigated. At 293 K, the ZIF-8 membrane showed an optimum n-hexane (n-C sub(6)H sub(14)) permeance of 7.16 10 super(-8) mol/(m super(2).s.Pa) with the corresponding separation factor of 2.46 for the nitrogen/n-hexane model mixtures at a trans-membrane pressure drop of 0.05 MPa, a stage cut of 0.293, and a n-hexane volume fraction of 30%. Moreover, the separation factor for the multicomponent alkanes decreased with increasing the number of n-alkanes because of competitive adsorption of the n-alkanes in membrane pores. Experimental results indicated that the ZIF-8 membrane is a fairly promising candidate for the application in gasoline vapor recovery.
  • Language: English
  • Identifier: ISSN: 0888-5885 ; E-ISSN: 1520-5045 ; DOI: 10.1021/ie403894u

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