High performance CO2 sorbent applicable to adsorption heat pump

通过测量不同温度下的气体吸附等温线，考察了7种不同结构的弹性层状MOF(ELMS)在不同温度下表现出的栅极现象。了解了每棵榆树产生栅极现象的条件。用气体吸收率和X射线衍射法研究了ELM-11分子筛的双台阶栅现象。与第一步相比，第二步得到的CO2吸附量和层间膨胀几乎相同。这表明即使对于气态CO2分子，ELM-11也应该包括两步溶胀反应。测定了ELM-11([Cu(Bpy)_2(BF_4)_2)]的栅吸附热和脱附热。从能量观点看，二氧化碳掺入晶格对ELM-11分子筛结构的稳定表现在栅极现象上。在湿条件下，Na2CO3或K2CO3的CO2封闭反应也被发现用于化学热泵的另一种候选反应。

Gate phenomena, which 7 different elastic layer-structured MOFs (ELMs) consisting of different building blocks show, were examined by measuring gas sorption isotherms at different temperatures. Conditions for the gate phenomenon of each ELM were understood. The double-step gate phenomenon of ELM-11 was examined by measuring gas sorption and X-ray diffraction. Almost the same CO2 sorption amount and interlayer expansion for the 2nd step were obtained for those at the 1st step. This suggested that ELM-11 should involve a double-step swelling reaction even for gaseous CO2 molecules. Sorption and desorption heats for the gate phenomenon of ELM-11 ([Cu(bpy)2(BF4)2) were measured. The stabilization of the structure of ELM-11 by CO2 incorporation into the crystal lattice was shown in the gate phenomenon from the energetic viewpoint. Another candidate reaction for a chemical heat pump using CO2 was also found for the CO2 occlusion reaction of Na2CO3 or K2CO3 under moist condition.