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[期刊论文]

Improved thiophene solution selectivity by Cu2+, Pb2+ and Mn2+ ions in pervaporative poly[bis(p-methyl phenyl) phosphazene] desulfurization membrane

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Author:

Yang, Zhengjin (Yang, Zhengjin.) | Zhang, Wei (Zhang, Wei.) | Wang, Tao (Wang, Tao.) | Unfold

Indexed by:

EI Scopus SCIE

Abstract:

Due to interfacial defects and agglomeration, role of metal ions in mixed matrix membrane during pervaporation is not fairly demonstrated and not fully taken advantage of. Through surface modification of pristine PMePP membrane and the followed ion exchange treatments, PMePP-M membranes containing Cu2+, Mn2+, or Pb2+ ions were obtained. X-ray photoelectron spectroscopy (XPS) analysis confirms the successful exchange of Cu2+, Mn2+, or Pb2+ ions onto the membrane surface. Pervaporation results show that the removal of thiophene from model gasoline by pristine PMePP membrane or modified PMePP membranes is a solution-diffusion controlled process while it shifts to a solution controlled process for PMePP-M membranes. It provides important evidence for the facilitated thiophene mass transport via metal ions. PMePP-M membranes show superior selectivity in a Robeson type plot and their performance locates above the upper bound of literature reported thiophene permeability and selectivity. In the meantime, it is proved that post-treatment and control of oxidation temperature can compensate the decrease of pervaporative flux caused by the change in surface hydrophobicity and the introduction of electric charge. (c) 2013 Elsevier B.V. All rights reserved.

Keyword:

Facilitated transport Desulfurization Pervaporation membrane Polylbis(p-methyl phenyl) phosphazene]

Author Community:

  • [ 1 ] [Yang, Zhengjin]Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing 100084, Peoples R China
  • [ 2 ] [Wang, Tao]Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing 100084, Peoples R China
  • [ 3 ] [Li, Jiding]Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing 100084, Peoples R China
  • [ 4 ] [Zhang, Wei]Beijing Univ Technol, Coll Environm & Energy Engn, Ctr Membrane Technol, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Li, Jiding]Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing 100084, Peoples R China

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Source :

JOURNAL OF MEMBRANE SCIENCE

ISSN: 0376-7388

Year: 2014

Volume: 454

Page: 463-469

9 . 5 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:258

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 39

SCOPUS Cited Count: 41

30 Days PV: 4

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