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[期刊论文]

Synthesis and characterization of a silica-alumina composite membrane and its application in a membrane reactor

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author:

Kageyama, Naoki (Kageyama, Naoki.) [1] | Takagaki, Atsushi (Takagaki, Atsushi.) [2] | Sugawara, Takashi (Sugawara, Takashi.) [3] | Unfold

Indexed by:

EI Scopus SCIE

Abstract:

Hydrothermally stable silica-alumina composite membranes were synthesized through chemical vapor deposition (CVD) of tetraethylorthosilicate (TEOS) and aluminium tri-sec-butoxide precursor at 923 K on porous alumina supports. The membranes showed high hydrogen permselectivity (order of 10(-7) mol m(-2) s(-1)Pa(-1)) comparable to that of pure silica membranes but with superior hydrothermal stability, and were used in a membrane reactor. The permeation of small gas species (H-2, He, Ne) was well explained by a solid-state diffusion mechanism, involving jumps of the permeating species between solubility sites. The permeation mechanism of large gas molecules (CH4, CO2, N-2) was explained by the gas translation mechanism involving large pore defects. Steam methane reforming (SMR) on a Ni/MgO-SiO2 catalyst was carried out at 923 K in the membrane reactor and in a conventional packed-bed reactor. The membrane contributed to an increase in the hydrogen production rate by the selective extraction of hydrogen from the reaction zone.

Keyword:

Chemical vapor deposition Permeance mechanism Silica-alumina membrane Solubility site model Steam methane reforming

Community:

  • [ 1 ] [Kageyama, Naoki]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 2 ] [Takagaki, Atsushi]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 3 ] [Sugawara, Takashi]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 4 ] [Kikuchi, Ryuji]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 5 ] [Oyama, S. Ted]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 6 ] [Takagaki, Atsushi]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 7 ] [Oyama, S. Ted]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 8 ] [Oyama, S. Ted]Virginia Polytech Inst & State Univ, Dept Chem Engn 0211, Environm Catalysis & Nanomat Lab, Blacksburg, VA 24061 USA

Reprint 's Address:

  • 大山茂生

    [Oyama, S. Ted]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

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Source :

SEPARATION AND PURIFICATION TECHNOLOGY

ISSN: 1383-5866

Year: 2018

Volume: 195

Page: 437-445

5 . 1 0 7

JCR@2018

8 . 2 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:209

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 20

SCOPUS Cited Count: 22

30 Days PV: 0

操作日志

管理员  2024-08-07 15:57:17  更新被引

管理员  2024-08-07 15:57:14  更新被引

管理员  2020-11-12 23:46:50  创建

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