The scientists examined syngas conversion over a representative spinel ZnAl2O4 oxide with combined advanced solid-state nuclear magnetic resonance (NMR) technologies. They utilized in-situ NMR approach to observe the complete process of syngas conversion to methanol over ZnAl2O4 driver, during which the formate and methoxy species were identified as the key intermediates.
Through a series of double resonance and multi-dimensional connection NMR experiments, they identified the double active sites with structure of -AlIV-OH · · · ZnIII-. Hence, they proposed the synergistic catalytic system of the double active websites on ZnAl2O4 driver for syngas conversion response.
Furthermore, they elaborated on the vibrant development of the response intermediates and active sites throughout the reaction procedure at an atomic level.
” On one hand, our work exemplifies the increasing ability of solid-state NMR spectroscopy in the study of surface/interface catalysis,” Prof. HOU said. “On the other hand, the present understanding of the active websites and reaction mechanism can bring motivation to study syngas conversion and CO2 hydrogenation on other bimetallic oxide systems, supplying crucial guidance for the logical style and modulation of high-efficiency oxide drivers.”
Recommendation: “Synergistic interplay of double active websites on spinel ZnAl2O4 for syngas conversion” by Qiao Han, Pan Gao, Kuizhi Chen, Lixin Liang, Zhenchao Zhao, Xinlong Yao, Dong Xiao, Xiuwen Han and Guangjin Hou, 8 February 2023, Chem.DOI: 10.1016/ j.chempr.2023.01.004.
Revealing the synergistic interaction of double active sites on a spinel ZnAl2O4 bimetallic oxide for syngas conversion by advanced solid-state NMR technologies. Credit: DICP
To bridge the gap in between different carbon resources and important chemicals, catalytic syngas conversion is a key path. A new platform for this conversion is oxide-zeolite (OXZEO) bifunctional catalysis.
A team of researchers, led by Prof. Hou Guangjin from the Dalian Institute of Chemical Physics (DICP) at the Chinese Academy of Sciences (CAS), has actually just recently found the synergistic interplay mechanism of double active sites on bimetallic oxides. This discovery can lead to more efficient syngas conversion at the atomic level.
The research was just recently published in the journal Chem.