文献类型：期刊文献

英文题名：Novel Fluidizable K-Doped HAc-Li4SiO4 Sorbent for CO2 Capture Preparation and Characterization

作者：Zhang, Sai[1];Chowdhury, Muhammad B. I.[2];Zhang, Qi[1];de Lasa, Hugo I.[2]

机构：[1]East China Univ Sci & Technol, Dept Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada

年份：2016

卷号：55

期号：49

起止页码：12524

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20165103155486);WOS:【SCI-EXPANDED(收录号:WOS:000389963100003)】；

基金：We would like to acknowledge the financial support of the China Scholarship Council, National Natural Science Foundation of China (Grant 21176080), and Natural Science Foundation of Shanghai (16ZR1408200), who awarded a Graduate Visiting Scholarship to Sai Zhang. We are also grateful to the Natural Sciences and Engineering Research Council (NSERC Discovery Grant-Prof. H. de Lasa), who financially contribute to cover the material and the supply expenses for the present study.

语种：英文

外文关键词：Temperature programmed desorption - Carbon dioxide - Silicon compounds - Impregnation - Sorbents - X ray diffraction

摘要：A novel fluidizable K-doped HAc-Li4SiO4 sorbent using an incipient impregnation method was prepared in this work. The produced sorbent displayed an excellent CO2 sorption capacity and stability under expected reaction conditions. Glacial acetic acid treatment was first used to modify the Li4SiO4 sorbent microstructure. Following this step, an incipient impregnation method was applied to dope potassium onto the sorbent in order to further enhance the sorbent sorption capacity. This novel K doped HAc-Li4SiO4 sorbent was characterized using X-ray diffraction, N-2 adsorption-desorption, CO2 temperature-programmed carbonation (CO3-TPC), and CO2 temperature programmed decarbonation (CO2-TPDC) analyses. The experimental results showed that the CO2 sorption capacity of the K doped HAc-Li4SiO4 sorbent is approximately 100 cm(3) STP CO2/g sorbent. This was five times that of the Li4SiO4 sorbent. Furthermore, the cyclic test of the K-doped HAc-Li4SiO4 sorbent demonstrated it to be high and stable for CO2 capture.