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，研究了7种由不同构件组成的弹性层状mof （elm）所表现出的栅现象。了解了各ELM栅现象产生的条件。通过气体吸附和x射线衍射检测了ELM-11的双台阶栅现象。第二步的CO2吸收量和层间膨胀量与第一步几乎相同。这表明ELM-11应该包括一个双步膨胀反应，即使是气态的CO2分子。测定了ELM-11 ([Cu（bpy)2(BF4)2）栅现象的吸附热和解吸热。从能量的角度来看，栅极现象表明CO2掺入晶格对ELM-11结构的稳定作用。在潮湿条件下，Na2CO3或K2CO3的CO2闭塞反应也被发现是化学热泵的另一个候选反应。

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.