Journal
SCIENCE
Volume 377, Issue 6604, Pages 406-410Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.abo0356
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Funding
- National Key Research and Development Program of China [2021YFA1500404]
- National Natural Science Foundation of China [U21B20101, 21932006, 22032005, 22102143, 22125304]
- China Postdoctoral Science Foundation [2021M702803]
- National Postdoctoral Program for Innovative Talents [BX20200291]
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A physical mixture of hydrophobic poly(divinylbenzene) with cobalt-manganese carbide can modulate the catalyst environment, enhance water removal, and significantly improve syngas conversion efficiency.
In many reactions restricted by water, selective removal of water from the reaction system is critical and usually requires a membrane reactor. We found that a simple physical mixture of hydrophobic poly(divinylbenzene) with cobalt-manganese carbide could modulate a local environment of catalysts for rapidly shipping water product in syngas conversion. We were able to shift the water-sorption equilibrium on the catalyst surface, leading to a greater proportion of free surface that in turn raised the rate of syngas conversion by nearly a factor of 2. The carbon monoxide conversion reached 63.5%, and 71.4% of the hydrocarbon products were light olefins at 250 degrees C, outperforming poly(divinylbenzene)-free catalyst under equivalent reaction conditions. The physically mixed CoMn carbide/poly(divinylbenzene) catalyst was durable in the continuous test for 120 hours.
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