Research Progress in Metal-Organic Framework and Its Composites for Separation of C Based on Sieving Multiple Effects

Fine separation of mixture is the primary importance technology and hot topic in the petrochemical industry. In particular, high-efficiency separation of C (CH/CH and CH/CH) is a difficult issue and challenge of the high-quality production in modern chemical process. Traditional heat-driven separation processes (e.g., fine distillation separation and selective catalytic hydrogenation separation) have the shortages of high energy consumption and low economic benefits. On the contrary, the processes with non-thermal driven separations (e.g., adsorptive and membrane-based separations) can greatly overcome these weaknesses. Among these adsorptive separation materials, metal-organic framework (MOF) materials own a huge various library of components/structure units. Their characters of controllable pore structures and adjustable compositions will bring about new opportunities for the high-efficiency refined separations. In this context, the crystals and pore parameters of MOF (MOF and its composites) materials in recent years were sorted out and summarized, the researches in the high-efficiency separation of MOF materials for C were analyzed, and the key issues of the design, controllable preparation, and pore size control mechanism for MOF materials were focused on. In addition, the future research trend of MOF materials were also put forward.