BROWSE

Related Researcher

Author's Photo

Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

ITEM VIEW & DOWNLOAD

Hydrodechlorination of CCl4 over Pt/gamma-Al2O3 prepared from different pt precursors

Cited 17 times inthomson ciCited 18 times inthomson ci
Title
Hydrodechlorination of CCl4 over Pt/gamma-Al2O3 prepared from different pt precursors
Other Titles
Hydrodechlorination of CCl4 over Pt/gamma-Al2O3 prepared from different pt precursors
Author
Bae, Jong WookLee, Jae SungLee, Kyung Hee
Keywords
SUPPORTED PLATINUM CATALYSTS; CARBON-TETRACHLORIDE; GAMMA-ALUMINA; OXIDATION-REDUCTION; PARTICLE MORPHOLOGY; VAPOR-PHASE; FT-IR; ZEOLITE; CO; PT/AL2O3
Issue Date
2008-01
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED CATALYSIS A-GENERAL, v.334, no.1-2, pp.156 - 167
Abstract
The platinum particle size on gamma-Al2O3 prepared from different platinum precursors such as Pt(NH3)(2)(NO2)(2), H2PtCl6, and K2PtCl6, and its effect on hydrodechlorination (HDC) of CCl4 With the variation of calcination temperatures was investigated. It concomitantly affects the products distribution and catalytic stability in HDC of CCl4. To verify the effects of platinum particle size with different platinum precursors on the product distribution, the catalysts have been characterized by HRTEM and CO chemisorption, FF-IR, and TP methods (TPR, TPD and TPSR). The catalysts with small platinum particles, which possess low coordination number and electron-deficient character, favor the complete dechlorination of CCl4 and produce CH4 more selectively. It could be due to the strong adsorption strength of CCl4 or the decreased activation energy of surface intermediates on small platinum particles. FF-IR studies reveal that the maximum peak position of linear-bonded CO shifted to the higher frequency with the increase of platinum particle size in all catalysts prepared from three different platinum precursors. While the selectivity to CH4 increased with the decrease in the platinum particle size, the total amount of carbonaceous species on the platinum particles was enhanced. The larger the platinum particle, the higher the selectivity to CHCl3 was obtained in all tested catalysts under the non-deactivating condition. (c) 2007 Elsevier B.V. All rights reserved
URI
Go to Link
DOI
10.1016/j.apcata.2007.10.001
ISSN
0926-860X
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
1-s2.0-S0926860X07006102-main.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU