Organized mesoporous alumina (OMA) was synthesized by the inexpensive aluminum nitrate, PEG1540 was used as template, ammonium carbonate as precipitating agent. CO2 sorbent were prepared by introducing (3-Aminopropy)triethoxysilane(APTES) into OMA type using a post-synthetic impregnation method. The synthesized sorbent was characterized by measuring technology including XRD, N2 adsorption-desorption and TEM. The kinetic sorption properties of CO2 were discussed by means of breakthrough curve analysis in fixed bed. The effects of APTES loadings, adsorption temperatures and gas flow rates were investigated also. The results indicated that the maximal adsorption capacities were achieved as 30% APTES loading , 60℃ temperature and 40mL/min gas flow rate. The adsorption capacity reach 0. 639mmol/g. The construction as well as the adsorption capacity of the APTES/OMA had no change after six recycles of absorbtion and desorption. It is indicated that the synthesized APTES/OMA had good stability and regeneration performance.%以廉价的无机铝盐为铝源,碳酸铵为沉淀剂,聚乙二醇1540为模板剂合成有序介孔氧化铝(OMA).以3-丙胺基三乙氧基硅烷(APTES)为氨基化剂,采用浸渍法将其嫁接到OMA孔内,形成氨基化的OMA用于吸附CO2.采用XRD、BET、TEM等测试技术对合成的吸附剂进行表征,通过固定床测量穿透曲线的方法研究其对CO2动态吸附性能.分别考察了吸附量、吸附温度、气体流量等因素对吸附性能的影响.结果表明,APTES负载量为30％的吸附剂、吸附温度为60℃、流量为40mL/min时对CO2吸附量最大,为0.639mmol/g;APTES/OMA经6次吸-脱循环后,其结构及吸附性能均变化较小,具有较好的稳定性和再生性能.
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