Abstract
Selective synthesis of higher oxygenates (linear α-alcohols and α-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.
| Original language | English |
|---|---|
| Pages (from-to) | 4627-4631 |
| Number of pages | 5 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 58 |
| Issue number | 14 |
| DOIs | |
| State | Published - Mar 26 2019 |
Funding
We are grateful for financial support from the National Key R&D Program of China (2017YFB0602202, 2017YFB0602203, 2018YFB0604700), Natural Science Foundation of China (21573271, 91545112, 21776296, and 21703278), Key Research Program of Frontier Sciences, CAS (Grant No. QYZDB-SSW-SLH035), the “Transformational Technologies for Clean Energy and Demonstration”, Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA21020600), the Youth Innovation Promotion Association of CAS and SARI Interdisciplinary Youth Innovation Research funding (171001).
Keywords
- cobalt carbide
- higher oxygenates
- olefins
- synergetic effect
- syngas conversion