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Physical mixing of a catalyst and a hydrophobic polymer promotes CO hydrogenation through dehydration
Science ( IF 44.7 ) Pub Date : 2022-07-21 , DOI: 10.1126/science.abo0356
Wei Fang 1 , Chengtao Wang 1, 2 , Zhiqiang Liu 3 , Liang Wang 1 , Lu Liu 1 , Hangjie Li 2 , Shaodan Xu 4 , Anmin Zheng 3 , Xuedi Qin 2 , Lujie Liu 1 , Feng-Shou Xiao 1, 5
Affiliation  

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°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.

中文翻译:

催化剂和疏水性聚合物的物理混合通过脱水促进 CO 加氢

在许多受水限制的反应中,从反应系统中选择性去除水是至关重要的,通常需要膜反应器。我们发现疏水性聚(二乙烯基苯)与钴锰碳化物的简单物理混合物可以调节催化剂的局部环境,从而在合成气转化中快速运输水产品。我们能够改变催化剂表面的吸水平衡,导致更大比例的自由表面,从而将合成气转化率提高近 2 倍。一氧化碳转化率达到 63.5% 和 71.4%在 250°C 的烃类产品中,轻质烯烃的性能优于无聚(二乙烯基苯)催化剂。
更新日期:2022-07-21
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