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author:

Vargheese, Vibin (Vargheese, Vibin.) [1] | Ghampson, I. Tyrone (Ghampson, I. Tyrone.) [2] | Yun, Gwang-Nam (Yun, Gwang-Nam.) [3] | Kobayashi, Yasukazu (Kobayashi, Yasukazu.) [4] | Takagaki, Atsushi (Takagaki, Atsushi.) [5] | Oyama, S. Ted (Oyama, S. Ted.) [6]

Indexed by:

EI Scopus SCIE

Abstract:

A one-pot redox deposition method is described to prepare silica-supported bimetallic NiPt and CuPt catalysts using differences in standard reduction potentials. The synthesis involved the initial reduction of non-noble metal ions (Ni2+ and Cu2+) by NaBH4, followed by reduction of Pt ions by these reduced metals. Alloy formation and phase purity were established by X-ray diffraction (XRD), bulk composition by X-ray fluorescence (XRF), and surface composition by X-ray photoelectron spectroscopy (XPS). Alloy formation was enhanced by increase in the amount of base metals available to reduce Pt, or through the use of excess NaBH4 after redox deposition. The catalysts were evaluated for methane oxidation at 300-400 degrees C and atmospheric pressure. Reference samples prepared using the incipient wetness impregnation (IW) method had inferior performance and characteristics. The redox deposition method provides a simple and versatile protocol for the preparation of bimetallic alloys between noble metals and base metals.

Keyword:

Bimetallic catalyst copper platinum nickel platinum noble metal and base metal alloy redox deposition method reduction potential

Community:

  • [ 1 ] [Vargheese, Vibin]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 2 ] [Ghampson, I. Tyrone]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 3 ] [Kobayashi, Yasukazu]Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
  • [ 4 ] [Takagaki, Atsushi]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 ] [Yun, Gwang-Nam]Virginia Tech, Dept Chem Engn, Blacksburg, VA 24061 USA
  • [ 7 ] [Oyama, S. Ted]Virginia Tech, Dept Chem Engn, Blacksburg, VA 24061 USA
  • [ 8 ] [Oyama, S. Ted]Fuzhou Univ, Sch Chem Engn, Fuzhou 350116, Peoples R China
  • [ 9 ] [Takagaki, Atsushi]Kyushu Univ, Dept Appl Chem, Fukuoka 8190935, Japan

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 :

APPLIED CATALYSIS A-GENERAL

ISSN: 0926-860X

Year: 2020

Volume: 591

5 . 7 0 6

JCR@2020

4 . 7 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:160

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 15

SCOPUS Cited Count: 15

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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