Wang Jian, Zhou Yunlong, Hu Xiaotian
College of Energy and Power Engineering, Northeast Electric Power University, Jilin, 132031, China.
College of Energy and Power Engineering, Northeast Electric Power University, Jilin, 132031, China.
Environ Res. 2022 Nov;214(Pt 2):113855. doi: 10.1016/j.envres.2022.113855. Epub 2022 Jul 13.
Novel amine functionalized materials can capture greenhouse gas CO. In this study, SiO-AlO-ZrO ternary composite aerogel was prepared by sol-gel method, supercritical drying, ultrasonic non-in-situ synthesis and other processes using aluminum chloride hexahydrate as aluminum source, ethyl orthosilicate as silicon source and tetrabbutyl zirconate as zirconium source. The composite material was used as the carrier material. By impregnation method, the modified agent bis - (3-trimethoxy-silpropyl) amine and the composite were fully mixed and modified, and the novel zeolite doped amine functionalized ternary composite aerogel was obtained by doping acidification activation zeolite. The results show that the prepared novel zeolite amine-modified ternary aerogels have rich microporous structure and ordered mesoporous structure. After loading different contents of amine-based materials (CAA-X) in the ternary aerogels, the comparison between CAAZ-X and zeolite amine-modified ternary aerogels is conducted. Zeolite doped CAAZ-30 material shows the best adsorption performance, with a maximum adsorption capacity of 5.30 mmol/g. In the presence of water vapor, CAAZ-30 material also showed the best adsorption performance, with a maximum adsorption capacity of 5.33 mmol/g. This can help us design suitable adsorbent materials for CO capture in different practical applications.
新型胺功能化材料能够捕获温室气体二氧化碳。在本研究中，以六水合氯化铝为铝源、正硅酸乙酯为硅源、四丁基锆酸酯为锆源，通过溶胶 - 凝胶法、超临界干燥、超声非原位合成等工艺制备了SiO - AlO - ZrO三元复合气凝胶。将该复合材料用作载体材料，采用浸渍法使改性剂双 -（3 - 三甲氧基硅丙基）胺与复合材料充分混合并改性，通过掺杂酸化活化沸石得到新型沸石掺杂胺功能化三元复合气凝胶。结果表明，所制备的新型沸石胺改性三元气凝胶具有丰富的微孔结构和有序的介孔结构。在三元气凝胶中负载不同含量的胺基材料（CAA - X）后，对CAAZ - X与沸石胺改性三元气凝胶进行了比较。沸石掺杂的CAAZ - 30材料表现出最佳的吸附性能，最大吸附容量为5.30 mmol/g。在有水蒸气存在的情况下，CAAZ - 30材料也表现出最佳的吸附性能，最大吸附容量为5.33 mmol/g。这有助于我们设计适用于不同实际应用中二氧化碳捕获的吸附剂材料。
