Preparation of CuZnAl hydrotalcite-like catalysts for AsH3 abatement at low temperatures
Yilong Lin, Xueqian Wang, Jiming Hao, Ping Ning, Guangfei Qu, Lihong Tang, Yibing Xie, Caidong Du, Yanhua He
Index: 10.1016/j.catcom.2018.03.028
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Abstract
In this study, a series of CuZnAl hydrotalcite-like compound (HTLC) precursors were prepared by a hydrothermal method under varying synthesis conditions. The HTLCs and their respective metal oxides formed after calcination were characterized by XRD, SEM-EDS, TGA and N2-BET with the aim to determine the effect of the preparation conditions on their catalytic performance towards AsH3 oxidation and adsorption. The optimal parameters determined were Cu:Zn of 10:3, hydrothermal temperature of 105 °C and calcination temperature of 500 °C. Finally, these optimal conditions led to a CuZnAl material with excellent AsH3 removal efficiencies for 10 h at 60 °C.