Fischer–Tropsch Synthesis: Effect of Reducing Agent for Aqueous-Phase Synthesis Over Ru Nanoparticle and Supported Ru Catalysts
The effect of the reducing agent on the performance of a ruthenium nanoparticle catalyst was investigated during aqueous-phase Fischer–Tropsch synthesis using a 1 L stirred tank reactor in the batch mode of operation. For the purpose of comparison, the activity and selectivity of NaY zeolite support...
Saved in:
Published in | Catalysis letters Vol. 145; no. 3; pp. 893 - 904 |
---|---|
Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Boston
Springer US
01.03.2015
Springer Nature B.V Springer |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The effect of the reducing agent on the performance of a ruthenium nanoparticle catalyst was investigated during aqueous-phase Fischer–Tropsch synthesis using a 1 L stirred tank reactor in the batch mode of operation. For the purpose of comparison, the activity and selectivity of NaY zeolite supported Ru catalyst were also studied. NaBH
4
and hydrogen were used as reducing agents in this study, and hydrogen reduced catalysts exhibited higher activities than the NaBH
4
reduced catalysts, because of higher extent of reduction and a relatively lower tendency toward agglomeration of Ru particles. The Ru nanoparticle catalyst displayed higher activities than the NaY zeolite supported Ru catalyst for both reducing agents. NaBH
4
reduced catalysts are less active and the carbon dioxide selectivity is higher than the hydrogen reduced catalysts. Nevertheless, the activity of the supported Ru catalyst (Ru/NaY) was 75 % of that of the Ru nanoparticle catalyst, and has the benefit of easy wax/catalyst slurry separation by filtration. The hydrogen reduced supported Ru catalyst exhibited superior selectivity towards hydrocarbons (higher C
5
+ selectivity and lower selectivity to methane) than all other catalysts tested.
Graphical Abstract |
---|---|
Bibliography: | USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22) BNL-111162-2015-JA SC00112704 |
ISSN: | 1011-372X 1572-879X |
DOI: | 10.1007/s10562-014-1462-7 |