Chemical Engineering Journal 336 (2018) 376–385 Contents lists available at ScienceDirect Chemical Engineering Journal journal homepage: www.elsevier.com/locate/cej Role of microstructure, electron transfer, and coordination state in the CO capture of calcium-based sorbent by doping (Zr-Mn) Hongxia Guo, Xiaochen Kou, Yujun Zhao, Shengping Wang , Xinbin Ma Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: A combination of oxygen vacancy and high Tammann temperature of the inert material in the calcium-based (Zr-Mn)-doped sorbent is crucial to capture CO . Herein, a novel (Zr-Mn)-doped calcium-based sorbent was explored, and the Sol-gel role of microstructure, electron transfer, and coordination state in the process of CO capture was thoroughly CO capture explained. The good dispersity, favorable porosity, and optimized pore size distribution are the unique features Calcium-based of sorbent. The well-dispersed CaZrO and Ca MnO crystallite phases prevent CaO crystallite growth and ag- 3 2 4 Coordination state glomeration. The introduction of Mn promotes the ability of donating electrons from Ca atom to O that reacts surf 4+ 3+ with CO . It can generate oxygen vacancy
Chemical Engineering Journal – Elsevier
Published: Mar 15, 2018
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