Abstract
A multifunctional catalyst composed of CoMn and CuZnAlZr oxides can dramatically increase higher-alcohol selectivity. However, the role of Cu-based components and catalytic mechanism are still unclear. Herein, a series of multifunctional catalysts containing CoMn oxides and different Cu-based components were constructed to investigate the influence of a Cu component, and a link between methanol synthesis and higher-alcohol synthesis was established. It was found that the Cu-based components with different methanol synthesis activity showed a different promotional effect for higher-alcohol synthesis. The sole Cu-based component exhibited higher activity for methanol synthesis, and higher selectivity for C2+ oxygenates was achieved for the corresponding mixed catalyst system. In situ DRIFTs indicated that the CHxO∗ species were mainly produced over the Cu-based components. The formed CHxO∗ species bridged the CoMn and Cu-based component and promoted the formation of higher alcohols.
| Original language | English |
|---|---|
| Pages (from-to) | 6137-6146 |
| Number of pages | 10 |
| Journal | Journal of Physical Chemistry C |
| Volume | 125 |
| Issue number | 11 |
| DOIs | |
| State | Published - Mar 25 2021 |
Funding
This work was financially supported by Natural Science Foundation of China (91945301, 22072177, and 21776296), the National Key R&D Program of China (2017YFB0602202), Program of Shanghai Academic/Technology Research Leader (20XD1404000), Key Research Program of Frontier Sciences, CAS (Grant QYZDB-SSW-SLH035), the “Transformational Technologies for Clean Energy and Demonstration”, Strategic Priority Research Program of the Chinese Academy of Sciences (Grant XDA21020600), Natural Science Foundation of Shanghai (18ZR1444100), Youth Innovation Promotion Association of CAS, and Xin Rui Excellent Young Talents Program of SARI (E054881ZZ1).