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

author:

Luo, X.-J. (Luo, X.-J..) [1] | Wang, R. (Wang, R..) [2] | Ni, J. (Ni, J..) [3] | Lin, J.-X. (Lin, J.-X..) [4] | Wei, K.-M. (Wei, K.-M..) [5]

Indexed by:

Scopus PKU CSCD

Abstract:

Ru/CeO2 catalysts were prepared by the co-precipitation method using six precipitants, K2CO3, NH3·H2O, (NH4)2CO3, KOH, NH4HCO3 and KHCO3, used for the ammonia synthesis and characterized by N2 adsorption-desorption, X-ray fluorescence spectroscopy, X-ray diffraction and H2 temperatureprogrammed reduction to explore the cause resulting in their significant difference of catalytic activity. The ammonia synthesis activity of Ru/CeO2 catalyst prepared using NH4HCO3 as the precipitant was 14.46% at 10 MPa, 10000 h-1 , 450°C, which was higher than those obtained by other precipitants. The samples prepared using the rest four precipitants presented lower activity for ammonia synthesis. The type of precipitant not only significantly affects the coprecipitation of ruthenium and cerium ions, but also affects the reduction of the surface oxygen. The high catalytic activity of Ru/CeO2 catalyst prepared using NH4HCO3 can be attributed to the synergism among the increase in ruthenium loading, the higher dispersion of ruthenium particles, and the easier reduction of surface oxygen of the support.

Keyword:

Ammonia synthesis; Cerium; Co-precipitation; Precipitant; Ruthenium

Community:

  • [ 1 ] [Luo, X.-J.]National Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, China
  • [ 2 ] [Wang, R.]National Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, China
  • [ 3 ] [Ni, J.]National Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, China
  • [ 4 ] [Lin, J.-X.]National Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, China
  • [ 5 ] [Wei, K.-M.]National Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, China

Reprint 's Address:

  • [Wang, R.]National Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, China

Show more details

Related Keywords:

Related Article:

Source :

Acta Chimica Sinica

ISSN: 0567-7351

Year: 2009

Issue: 22

Volume: 67

Page: 2573-2578

0 . 7 5 1

JCR@2009

1 . 7 0 0

JCR@2023

JCR Journal Grade:3

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

Affiliated Colleges:

Online/Total:230/10033463
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