CO Chemical Capture on Lithium Cuprate, Through a Consecutive CO Oxidation and Chemisorption Bifunctional Process

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• 作者：Hugo Lara-Garcia ; Brenda Alcántar-Vázquez ; Yuhua Duan ; Heriberto Pfeiffer
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：February 25, 2016
• 年：2016
• 卷：120
• 期：7
• 页码：3798-3806
• 全文大小：583K
• ISSN：1932-7455

文摘

Lithium cuprate was studied as a possible catalytic and captor material for CO oxidation and the subsequent CO₂ chemisorption process, a bifunctional material. The CO oxidation reaction was analyzed in a high temperature reactor coupled to an FTIR spectrometer and a gas chromatograph. The CO₂ production and consequent chemisorption processes were analyzed by thermogravimetric analysis. All of these experiments were performed in both the presence and absence of oxygen. Experimental results were then compared with theoretical thermodynamic data. The results clearly showed that Li₂CuO₂ can be used as a bifunctional material; it is able to catalyze the CO oxidation, producing CO₂, and, subsequently, it can chemically capture the CO₂. Both processes occur in the presence or absence of oxygen and follow the Mars–van Krevelen reaction mechanism.