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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 Scopus SCIE

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 (similar to twice conversion rate based on catalyst weight) and better resistence to carbon deposition (similar to 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: similar to 80% conversion of toluene (rate 51 mu mol g(-1).cat s(-1)); treated catalyst similar to 60% (rate 38 mu mol g(-1).cat s(-1))), probably because of the deposited carbon from phenol. Kinetic studies and O-2- 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. (C) 2015 Elsevier B.V. All rights reserved.

Keyword:

Iron Nickel Phenol Steam reforming Toluene

Community:

  • [ 1 ] [Koike, Mitsuru]Tohoku Univ, Sch Engn, Dept Appl Chem, Aoba Ku, Sendai, Miyagi 9808579, Japan
  • [ 2 ] [Nakagawa, Yoshinao]Tohoku Univ, Sch Engn, Dept Appl Chem, Aoba Ku, Sendai, Miyagi 9808579, Japan
  • [ 3 ] [Tomishige, Keiichi]Tohoku Univ, Sch Engn, Dept Appl Chem, Aoba Ku, Sendai, Miyagi 9808579, Japan
  • [ 4 ] [Li, Dalin]Fuzhou Univ, Coll Chem & Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst NERC, Fuzhou 350002, Fujian, Peoples R China
  • [ 5 ] [Watanabe, Hideo]Univ Tsukuba, Sch Life & Environm Sci, Tsukuba, Ibaraki 3058573, Japan

Reprint 's Address:

  • [Tomishige, Keiichi]Tohoku Univ, Sch Engn, Dept Appl Chem, Aoba Ku, 6-6-07 Aoba, Sendai, Miyagi 9808579, Japan

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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 Discipline: CHEMISTRY;

ESI HC Threshold:265

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 119

SCOPUS Cited Count: 125

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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