Journal
ACS CATALYSIS
Volume 8, Issue 11, Pages 9958-9967Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b02267
Keywords
CO2; hydrogenation; isoparaffins; Bronsted acid sites; coke deposition; zeolite regeneration; multifunctional catalyst
Categories
Funding
- National Natural Science Foundation of China [21773234, 21802138, 91745107, 21503215]
- Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences [XDA 21090203]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2018214]
Ask authors/readers for more resources
Direct conversion of CO2 into isoparaffins, ideal clean hydrocarbon fuel components, would be an eco-friendly way of mitigating CO2 emissions and replacing fossil fuels. Herein, we realize a one-step high-yield synthesis of isoparaffins from CO2 hydrogenation, catalyzed by a multifunctional Na Fe3O4/HMCM-22 catalyst. A selectivity of 82% among hydrocarbons was achieved for C4+, hydrocarbons, of which isoparaffins could account for 74%, while CO selectivity was as low as 17% at a CO2 conversion of 26%. The high yield to isoparaffins was derived owing to well matching of three tandem reactions comprising reverse water gas shift, C C coupling and isomerization. Unique pore structure and appropriate Bronsted acid properties of HMCM-22 effectively suppressed aromatization, while promoting isomerization. Coke deposition inside the micropores of HMCM-22 causes the decline of isoparaffin yield without changing the total yield of heavy hydrocarbons. Both the physicochemical properties and catalytic performances of the catalysts could still keep their original levels after several reaction-regeneration cycles, indicating a promising potential application in the future commercialization process of CO2 hydrogenation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available