title: Hierarchical Zeolites with Amine-Functionalized Mesoporous Domains for Carbon Dioxide Capture.
abstract: To prepare materials with high CO2 adsorption, a series of hierarchical LTA zeolites possessing various mesopore spaces that are decorated with alkylamines was designed and synthesized. The highest CO2 uptake capacity was achieved when (3-aminopropyl)trimethoxysilane (APTMS) was grafted onto the hierarchical LTA zeolite having the largest mesopores. Owing to the contributions of both alkylamine groups grafted onto the mesopore surfaces and active sites in the LTA zeolites, the amount of CO2 that can be taken up on these materials is much higher than for conventional aminosilicas such SBA-15 and MCM-41. Furthermore, the adsorbent shows good CO2 uptake capacity and recyclability in dynamic flow conditions.
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore.
authors.forename: Tien Hoa
authors.initials: TH
authors.lastname: Nguyen
authors.affiliation: Department of Nanochemistry, College of Bionano, Gachon University, Sungnam, 13120, Korea.
authors.forename: Sungjune
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Nanochemistry, College of Bionano, Gachon University, Sungnam, 13120, Korea.
authors.forename: Minyoung
authors.initials: M
authors.lastname: Yoon
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore. thbae@ntu.edu.sg.|Singapore Membrane Technology Center, Nanyang Technological University, Singapore, Singapore. thbae@ntu.edu.sg.
authors.forename: Tae-Hyun
authors.initials: TH
authors.lastname: Bae
mesh_terms: D000327:Adsorption; D000588:Amines / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D033362:Powder Diffraction; D012821:Silanes / Q000737:chemistry; D017641:Zeolites / Q000737:chemistry*
chemical_list: D000588:Amines; D012821:Silanes; D017641:Zeolites; D002245:Carbon Dioxide
keywords: amines; carbon storage; hierarchical zeolite; mesoporous materials; zeolites