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Catalytic activity of plasma-deposited Co3O4-based thin films for CO2 hydration – A new approach to carbon capture applications
Applied Catalysis B: Environment and Energy ( IF 20.2 ) Pub Date : 2021-11-25 , DOI: 10.1016/j.apcatb.2021.120961
Hanna Kierzkowska-Pawlak 1 , Ewelina Kruszczak 1 , Jacek Tyczkowski 1
Affiliation  

Addressing the challenge of increasing the rate of CO2 capture by accelerating the hydration process, we proposed the use of a new class of heterogeneous inorganic catalysts for this purpose. The presented research focused on Co3O4-based nanocatalysts produced by low-pressure plasma deposition (PECVD) in the form of thin films that can be deposited on any structured packing. The kinetic studies of this process were performed by bubbling CO2 through pure water with catalytic or inert packing, measuring changes in pH value over time. The developed kinetic model described the experimental data very well and showed that the reaction at the interface between the CO2 bubble and the catalyst surface is responsible for the catalytic effect. Studies of the molecular structure of the catalyst surface, carried out by the XPS technique, showed that the chemisorbed H2O clusters on this surface are the active centers for the interaction with gaseous CO2.



中文翻译:

用于 CO2 水合的等离子沉积 Co3O4 基薄膜的催化活性——碳捕获应用的新方法

为了解决通过加速水合过程来提高 CO 2捕获率的挑战,我们建议为此使用一类新型的非均相无机催化剂。所提出的研究重点是通过低压等离子体沉积 (PECVD) 以薄膜形式生产的基于Co 3 O 4的纳米催化剂,该薄膜可以沉积在任何结构化填料上。该过程的动力学研究是通过将 CO 2鼓泡在带有催化或惰性填料的纯水中,测量 pH 值随时间的变化来进行的。开发的动力学模型很好地描述了实验数据,并表明 CO 2气泡和催化剂表面负责催化作用。通过 XPS 技术对催化剂表面的分子结构进行的研究表明,该表面上化学吸附的 H 2 O 团簇是与气态 CO 2相互作用的活性中心。

更新日期:2021-12-06
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