Development of K and N based composite CO2 sorbents (KN) dried with a supercritical fluid
Development of K and N based composite CO2 sorbents (KN) dried with a supercritical fluid
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开发用超临界流体干燥的 K 和 N 基复合 CO2 吸附剂 (KN)
DOI：
10.1016/j.cej.2014.10.027
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发表时间：
2015
影响因子：
15.1
通讯作者：
Alan E.
中科院分区：
文献类型：
--
作者：
Wu Ye;Chen Xiaoping;Fan Maohong;Jiang Guodong;Kong Yong;Bl;Alan E.
The objective of this research was to develop composite CO2sorbents for overcoming the shortcomings of the corresponding individual sorbents. The composite sorbents were synthesized with K2CO3, 3-aminopropyltriethoxysilane (APTES), tetraethylorthosilicate (TEOS) and dried either with supercritical or conventional technique. Comparative experiments demonstrated that supercritical fluid drying (SCFD) was better than conventional drying (CD) in preparing CO2sorbents with more developed pore structure and thus higher CO2sorption capacity. The composite sorbent prepared with SCFD was tested under various conditions for their effects on CO2sorption capacity. The optimal K:N mole ratio for preparation of the composite sorbent and the reaction conditions for achieving the highest sorption capacity were obtained. In addition, the sorbent proved to be regenerable. Thus, supercritical drying is an effective technique for preparation of a promising composite CO2sorbent.
