本项目拟进行三个方面的研究工作，包括：（1）SAPO-34和M-SAPO-34（M代表分子筛骨架上取代的金属原子）分子筛膜合成、微结构调控和膜层表面活化、改性研究，以优化膜层结构；（2）探索低温条件下脱除模板剂的有效方法；（3）膜材料表征及其选择性分离CO2混合气体的性能评价、CO2混合气体膜分离过程研究与关键影响因素分析。研究工作的特色在于利用适当大小的晶粒作为晶种层，在多孔氧化铝载体上可控合成SAPO-34和M-SAPO-34分子筛薄膜，而通过膜层表面的活化或改性可以实现膜层表面性质的有效调控；使用光催化反应分解、活化SAPO-34膜表面孔中的模板剂分子，然后在一定气氛条件下使用较低温度脱除分子筛膜层的有机模板剂，可有效降低膜层在高温脱除模板剂过程中产生缺陷的几率，实现SAPO-34和M-SAPO-34分子筛膜的整体优化。

This project covers three parts, including (1) the synthesis and microstructure manipulation of SAPO-34 and M-SAPO-34 (M is the metal atom incorporated onto the framework) membranes, the activation or modification of the membrane to optimize the membrane structure,(2) the exploration for template removal at low-temperature, and (3) the membrane characterization with performance evaluation for CO2 separation, and the investigation for membrane separation process together with key influencing factors. The feature of this project is the controllable fabrication of thin SAPO-34 and M-SAPO-34 membranes. The efficient change of surface properties can be achieved by surface activation or modification. The activation of membrane surface using photocatalysis can dissolve the organic templates nearby, following the template removal at low-temperature under a certain atmosphere. This method can critically reduce the formation of defects possibly created during the process of template removal under high-temperature, leading to the optimized structure of the synthesized SAPO-34 and M-SAPO-34 membranes.