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

author:

She Yusheng (She Yusheng.) [1] | Li Lei (Li Lei.) [2] | Zhan Yingying (Zhan Yingying.) [3] (Scholars:詹瑛瑛) | Lin Xingyi (Lin Xingyi.) [4] (Scholars:林性贻) | Zheng Qi (Zheng Qi.) [5] (Scholars:郑起) | Wei Kemei (Wei Kemei.) [6]

Indexed by:

EI Scopus SCIE

Abstract:

This paper presented a study on the role of yttrium addition to CuO/CeO2 catalyst for water-gas shift reaction. A single-step co-precipitation method was used for preparation of a series of yttrium doped CuO/CeO2 catalysts with yttrium content in the range of 0-5wt.%. Properties of the obtained samples were characterized and analyzed by X-ray diffraction (XRD), Raman spectroscopy, H-2-TPR, cyclic voltammetry (CV) and the BET method. The results revealed that catalytic activity was increased with the yttrium content at first, but then decreased with the further increase of yttrium content. Herein, CuO/CeO2 catalyst doped with 2wt.% of yttrium showed the highest catalytic activity (CO conversion reaches 93.4% at 250 degrees C) and thermal stability for WGS reaction. The catalytic activity was correlated with the surface area, the area of peak gamma of H-2-TPR profile (i.e., the reduction of surface copper oxide (crystalline forms) interacted with surface oxygen vacancies on ceria), and the area of peak C-2 and A(1) (Cu-0 <-> Cu2+ in cyclic voltammetry process), respectively. Besides, Raman spectra provided evidences for a synergistic Cu-O-vacancy interaction, and it was indicated that doping yttrium may facilitate the formation of oxygen vacancies on ceria.

Keyword:

CuO/CeO2 catalyst cyclic voltammetry rare earths water-gas shift yttrium

Community:

  • [ 1 ] [She Yusheng]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalysis, Fuzhou 350002, Peoples R China
  • [ 2 ] [Li Lei]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalysis, Fuzhou 350002, Peoples R China
  • [ 3 ] [Zhan Yingying]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalysis, Fuzhou 350002, Peoples R China
  • [ 4 ] [Lin Xingyi]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalysis, Fuzhou 350002, Peoples R China
  • [ 5 ] [Zheng Qi]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalysis, Fuzhou 350002, Peoples R China
  • [ 6 ] [Wei Kemei]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalysis, Fuzhou 350002, Peoples R China

Reprint 's Address:

  • 郑起

    [Zheng Qi]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalysis, Fuzhou 350002, Peoples R China

Show more details

Related Keywords:

Source :

JOURNAL OF RARE EARTHS

ISSN: 1002-0721

CN: 11-2788/TF

Year: 2009

Issue: 3

Volume: 27

Page: 411-417

0 . 5 7 2

JCR@2009

5 . 2 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:3

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 27

SCOPUS Cited Count: 28

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

Online/Total:141/10012103
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