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论文类型：期刊论文

发表时间：2016-02-01

发表刊物：JOURNAL OF POROUS MATERIALS

收录刊物：SCIE、EI

卷号：23

期号：1

页面范围：131-137

ISSN号：1380-2224

关键字：Flexility; Amine modification; Silica aerogel; CO2 capture

摘要：One kind of flexible, amine-modified silica aerogel (AMSA) was prepared using sol-gel method and ambient drying technology. The obtained AMSA displays excellent mechanical strength. It can endure up to ca. 80 % linear compression and spring back to more than 95 % of its original size reversible deformation during uniaxial compression tests. The formed AMSA has abundant micropore, mesopore and macropore. Its porosity is higher than 90 %. The amine groups are incorporated into the silica network via covalent bond. The porous structure and the content of amine groups can be easily changed by adjusting the synthesis condition. High mechanical property, abundant pores, high content and stable amine groups give the obtained AMSA excellent CO2 adsorption properties. Its CO2 adsorption capacity can reach 6.45 mmol/g in simulated ambient air under 1 bar of dry CO2, as well as good stability over 50 adsorption-desorption cycles.