Enhanced Production of C5+ Hydrocarbons from CO2 Hydrogenation by the Synergistic Effects of Pd and K on γ-Fe2O3 Catalyst

Pure γ-Fe 2 O 3 was prepared by two steps. L(+)-Tartaric acid and Fe(NO 3 ) 3 ·9H 2 O were sequentially dissolved into water, then the stick liquid was dried and calcined in air. Promoter Pd and K were added to Fe 2 O 3 by impregnation. The influence of Pd or K on Fe 2 O 3 was different in view of t...

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Bibliographic Details
Published in:Catalysis letters 2019-02, Vol.149 (2), p.431-440
Main Authors: Ning, Wensheng, Li, Bei, Wang, Biao, Yang, Xiazhen, Jin, Yangfu
Format: Article
Language:English
Subjects:
Carbon dioxide
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Hydrogenation
Industrial Chemistry/Chemical Engineering
Organometallic Chemistry
Physical Chemistry
Selectivity
Tartaric acid
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Summary:Pure γ-Fe 2 O 3 was prepared by two steps. L(+)-Tartaric acid and Fe(NO 3 ) 3 ·9H 2 O were sequentially dissolved into water, then the stick liquid was dried and calcined in air. Promoter Pd and K were added to Fe 2 O 3 by impregnation. The influence of Pd or K on Fe 2 O 3 was different in view of the reducibility of Fe 2 O 3 , H 2 and CO 2 adsorption. But synergistic effects were observed from the catalyst co-promoted by Pd and K (Catalyst PKF). The improving effect of Pd on Fe 2 O 3 reduction was further stimulated by K, and the CO 2 quantity desorbed from catalyst PKF at the temperature lower than 300 °C was increased. The synergistic effects resulted in PKF having the highest C 5+  selectivity for CO 2 hydrogenation at 235 °C among the studied catalysts. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-018-2622-y