• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Koike, Mitsuru (Koike, Mitsuru.) [1] | Li, Dalin (Li, Dalin.) [2] | Watanabe, Hideo (Watanabe, Hideo.) [3] | Nakagawa, Yoshinao (Nakagawa, Yoshinao.) [4] | Tomishige, Keiichi (Tomishige, Keiichi.) [5]

Indexed by:

EI

Abstract:

Steam reforming of tar model compounds (benzene, toluene and phenol) was carried out using Ni-Fe/Mg/Al catalysts prepared by calcination and reduction of hydrotalcite-like precursor. Ni-Fe/Mg/Al (Fe/Ni = 0.25) catalyst showed higher activity (∼twice conversion rate based on catalyst weight) and better resistence to carbon deposition (∼one order smaller amount of deposited carbon) than Ni/Mg/Al. The difference in the weight-based rate and carbon deposition amount between catalysts with and without Fe was large when benzene or toluene was used as a substrate and high steam/carbon (S/C) ratio was applied. On the other hand, when phenol was used as a substrate, relatively large amount of carbon derived from decomposition of phenol was deposited on Ni-Fe/Mg/Al catalyst even with high (3.8) S/C ratio. The catalyst loses some activity for steam reforming of toluene when treated with phenol (untreated catalyst: ∼80% conversion of toluene (rate 51 μmol g-1-cat s-1); treated catalyst ∼60% (rate 38 μmol g-1-cat s-1)), probably because of the deposited carbon from phenol. Kinetic studies and O2- or H2O-TPO studies showed that phenol was strongly adsorbed on Fe site as well as Ni site, and the adsorbed phenol could be converted into carbonaceous species under the reaction conditions. On the other hand, the adsorbed phenol on Ni site underwent steam reforming, and the reaction was promoted by Fe. © 2015 Elsevier B.V. All rights reserved.

Keyword:

Benzene Binary alloys Carbon Catalyst activity Deposition Iron Iron alloys Magnesium Nickel Nickel alloys Phenols Steam Steam reforming Toluene

Community:

  • [ 1 ] [Koike, Mitsuru]Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai; 980-8579, Japan
  • [ 2 ] [Li, Dalin]National Engineering Research Center of Chemical Fertilizer Catalyst (NERC), College of Chemistry and Chemical Engineering, Fuzhou University, Gongye Road 523, Fuzhou, Fujian; 350002, China
  • [ 3 ] [Watanabe, Hideo]School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki; 305-8573, Japan
  • [ 4 ] [Nakagawa, Yoshinao]Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai; 980-8579, Japan
  • [ 5 ] [Tomishige, Keiichi]Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai; 980-8579, Japan

Reprint 's Address:

  • [tomishige, keiichi]department of applied chemistry, school of engineering, tohoku university, 6-6-07 aoba, aramaki, aoba-ku, sendai; 980-8579, japan

Show more details

Related Keywords:

Source :

Applied Catalysis A: General

ISSN: 0926-860X

Year: 2015

Volume: 506

Page: 151-162

4 . 0 1 2

JCR@2015

4 . 7 0 0

JCR@2023

ESI HC Threshold:265

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 125

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

Affiliated Colleges:

Online/Total:386/10025701
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1