Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 14, Pages 4627-4631Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201814611
Keywords
cobalt carbide; higher oxygenates; olefins; synergetic effect; syngas conversion
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Funding
- National Key R&D Program of China [2017YFB0602202, 2017YFB0602203, 2018YFB0604700]
- Natural Science Foundation of China [21573271, 91545112, 21776296, 21703278]
- Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-SLI1035]
- Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences [XDA21020600]
- Youth Innovation Promotion Association of CAS
- SARI Interdisciplinary Youth Innovation Research funding [171001]
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Selective synthesis of higher oxygenates (linear alpha-alcohols and alpha-aldehydes, C2+OH) from syngas is highly attractive but remains challenging owing to the low C2+OH selectivity and low catalytic stability. Herein we introduce a multifunctional catalyst composed of CoMn and CuZnAlZr oxides that dramatically increased the oxygenates selectivity to 58.1 wt%, where more than 92.0 wt% of the produced oxygenates are C2+OH. Notably, the total selectivity to value-added chemicals including oxygenates and olefins reached 80.6 wt% at CO conversion of 29.0% with high stability. The appropriate component proximity can effectively suppress the formation of the undesired C1 products, and the selectively propulsion of reaction network by synergetic effect of different components contributes to the enhanced selectivity to higher oxygenates. This work provides an alternative strategy for the rational design of new catalysts for direct conversion of syngas into higher oxygenates with co-production of olefins.
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