Thermodynamic analysis of gate-opening carbon dioxide (CO₂) adsorption behavior of metal–organic frameworks (MOFs) was investigated using differential scanning calorimetry (DSC). Unlike measurements under nitrogen atmosphere, obvious exothermic and endothermic peaks were observed in DSC curves under CO₂ flow. In situ heating X-ray diffraction and thermogravimetric analyses under CO₂ revealed that reversible crystal structure and weight changes occurred upon CO₂ adsorption/desorption. The thermodynamic parameters of the CO₂ adsorption process by MOFs were determined by DSC analysis at various CO₂ partial pressures.

中文翻译：

---

金属有机骨架开门二氧化碳吸附行为的热力学分析

使用差示扫描量热法（DSC）研究了金属有机框架（MOF）的开门二氧化碳（CO _{2 ）吸附行为的热力学分析。与氮气气氛下的测量不同，在CO 2}流动下的DSC曲线中观察到明显的放热峰和吸热峰。_{CO 2}下的原位加热X射线衍射和热重分析表明，CO ₂吸附/解吸时发生可逆的晶体结构和重量变化。通过DSC分析确定了不同CO 2 分压下MOFs吸附CO 2 过程_的热力学参数。