ALKALI-PROMOTED MOS2 CATALYSTS FOR ALCOHOL SYNTHESIS - THE EFFECT OF ALKALI PROMOTION AND PREPARATION CONDITION ON ACTIVITY AND SELECTIVITY
SCIE
SCOPUS
- Title
- ALKALI-PROMOTED MOS2 CATALYSTS FOR ALCOHOL SYNTHESIS - THE EFFECT OF ALKALI PROMOTION AND PREPARATION CONDITION ON ACTIVITY AND SELECTIVITY
- Authors
- CHUNG, JS; KIM, YG; LEE, JS; NAM, IS; PARK, TY; WOO, HC
- Date Issued
- 1993-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- The effect of alkali species addition to MoS2 catalyst has been studied to have a better understanding of the relationship between alcohol synthesis and basicities of alkali-promoted catalyst. The selectivity for alcohol formation increased in the order Li < Na < Cs < Rb < K, indicating moderately basic additives are desired. The activity for the alcohol formation is strongly dependent on the counter anion of the potassium salts, increasing in the order, halides < SO4 < CH3COO=CO3 < OH. This order is consistent with the order of the acidity of each conjugate base, revealing a strong basic alkali promotion is required for the formation of alcohols over MoS2. Potassium-promoted MoS2 is oxidized while stored in the atomosphere or even in a vacuum oven at room temperature for several weeks. The oxidized catalyst showed enhanced catalytic activity and high selectivity to C2+hydrocarbons, rather than forming alcohols as fresh catalyst did.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22023
- ISSN
- 0167-2991
- Article Type
- Article
- Citation
- STUDIES IN SURFACE SCIENCE AND CATALYSIS, vol. 75, page. 2749 - 2752, 1993-01
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.