BROWSE

Related Researcher

Author

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

ITEM VIEW & DOWNLOAD

ROOM-TEMPERATURE OXIDATION OF K2CO3/MOS2 CATALYSTS AND ITS EFFECTS ON ALCOHOL SYNTHESIS FROM CO AND H2

Cited 26 times inthomson ciCited 25 times inthomson ci
Title
ROOM-TEMPERATURE OXIDATION OF K2CO3/MOS2 CATALYSTS AND ITS EFFECTS ON ALCOHOL SYNTHESIS FROM CO AND H2
Other Titles
ROOM-TEMPERATURE OXIDATION OF K2CO3/MOS2 CATALYSTS AND ITS EFFECTS ON ALCOHOL SYNTHESIS FROM CO AND H2
Author
WOO, HEE CHULNAM, IN-SIKLee, Jae SungCHUNG, JONG SHIKLEE, KYUNG HEEKIM, YOUNG GUL
Keywords
PROMOTED IRON-OXIDE; MOLYBDENUM SULFIDE CATALYSTS; AMORPHOUS MOS3; ALUMINA; SULFUR; CHEMISORPTION; PRETREATMENT; ADSORPTION; DISULFIDE; PYRIDINE
Issue Date
199212
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF CATALYSIS, v.138, no.2, pp.525 - 535
Abstract
Potassium-promoted MoS2 is used as a catalyst for mixed alcohol synthesis from CO and H2. This study investigates the room-temperature oxidation of the catalyst and its effect on the surface structure and catalytic activity in alcohol synthesis at 573 K and 1.5 MPa. Catalysts were stored in the atmosphere or in a vacuum oven for several weeks. The characterization of catalyst was performed using XRD, XPS, FT-IR, and TGA/DTA methods. The XPS data of K2CO3/MoS2 stored in the atmosphere for extended periods indicated the oxidations of Mo(IV) (as sulfide) to Mo(VI) (as oxide) as well as S2- (as sulfide) to S6+ (as sulfate) on the MoS2 surface. The IR results showed that sulfate species first produced by oxidation had Td symmetry, which was further transformed into C2ν (bidentate) upon a prolonged storage. The sulfate species formed on the catalyst surface were stable until they were decomposed above 1000 K. The oxidized K2CO3/MoS2 catalyst showed enhanced catalytic activity and high selectivity to C2+ hydrocarbons, rather than forming alcohols as did fresh K2CO3/MoS2. These modified catalytic properties were similar to those of fresh K2SO4/MoS2. © 1992.
URI
Go to Link
DOI
http://dx.doi.org/10.1016/0021-9517(92)90304-Z
ISSN
0021-9517
Appears in Collections:
ECHE_Journal Papers

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

Show full item record

qr_code

  • mendeley

    citeulike

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

MENU