Synthesis of novel materials showing the gate phenomenon on CO2 sorption and elucidation of its mechanism

2014 Fiscal Year Final Research Report

• Project/Area Number: 25620140
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Green/Environmental chemistry
• Research Institution: Chiba University
• Principal Investigator: KANOH Hirofumi 千葉大学, 理学(系)研究科(研究院), 教授 (60334166)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 環境負荷低減物質 / 柔軟構造材料 / 配位高分子 / 酸化黒鉛

Outline of Final Research Achievements

Mechanisms of gate phenomena, which elastic layer-structured MOFs (ELMs) show on gas sorption, were examined by measuring spectroscopic methods such as electron spin resonance, spin-lattice relaxation in 1H-NMR, and IR absorption for ELM-11 ([Cu(bypiridine)2(BF4)2]) which shows a marked gate phenomenon on CO2 sorption. The mechanism was suggested for the gate phenomenon from the results obtained by the spectroscopic methods: the gas adsorption on the external surface influences on the structure of ELM-11 and triggers the expansion of interlayer distance.
Amine-modified graphite oxides (AGOs) were prepared as a new material showing a gate phenomenon, and examined by XRD, gas sorption, IR, TG measurements. A type of AGO was found to show a gate phenomenon on gas sorption for a mixed vapor of water and CO2, accompanied by an expansion of the interlayer distance.

Free Research Field

化学