论文部分内容阅读
以聚乙二醇1540为模板剂,Al(NO3)3为铝源,(NH3)2CO3为沉淀剂,Ca(NO3)2和Mg(NO3)2分别作为改性剂,采用沉淀法一步合成钙镁改性的有序介孔氧化铝(OMA-Ca、OMA-Mg)。通过XRD、TEM、氮等温吸脱附等测试技术对其进行表征,同时考察改性前后有序介孔氧化铝对电厂尾气CO2的吸附性能。结果表明,当Ca2+、Mg2+的负载量为10%、吸附温度为65℃、吸附气体体积流量为35mL/min时对CO2的吸附量最大,分别为9.36mg/g和10.45mg/g,经5次循环脱-吸附实验后其结构性质和吸附性能仍保持稳定,再生性能良好。
Poly (ethylene glycol) 1540 was used as a template, Al (NO3) 3 was used as aluminum source, (NH3) 2CO3 as precipitant, Ca (NO3) 2 and Mg (NO3) 2 as modifier respectively. Magnesium modified ordered mesoporous alumina (OMA-Ca, OMA-Mg). The catalysts were characterized by XRD, TEM and nitrogen isothermal desorption and desorption tests. The adsorption of ordered mesoporous alumina on the tail gas CO2 was also investigated. The results showed that when the loading of Ca2 +, Mg2 + was 10%, the adsorption temperature was 65 ℃, the adsorption capacity of CO2 was 9.36mg / g and 10.45mg / g respectively when the volume of adsorbed gas was 35mL / min, After the second cycle of desorption-adsorption experiments, its structural properties and adsorption properties remained stable and the regeneration performance was good.