Study On The Preparation Of Porous Organic Polymer Materials And Their Adsorption And Catalytic Properties

Porous organic polymers(POPs)are a class of porous network materials with two-dimensional or three-dimensional structures,which are formed by strong covalent bonds between various organic structural units with different geometric shapes and topological structures.Because of its advantages such as large specific surface area,porosity,and high thermal stability,it is widely used in various fields such as gas storage,gas separation,heterogeneous catalysis,and optoelectronic materials.Organic porous materials can be divided into two types:non-crystalline and crystalline:crystalline organic porous materials mainly include metal organic framework materials and covalent organic framework materials.Although they have a highly ordered structure,the preparation conditions are usually harsh.It is not easy to control,so their preparation has certain limitations;and some non-crystalline(amorphous)organic porous polymers(such as CMPs,PIMs,HCPs)usually have the advantages of simple synthesis conditions and large-scale preparation,so shows huge application prospects.This thesis conducts three parts of research on the basis of full literature research.Three kinds of amorphous organic porous polymers are mainly synthesized,which are used in the three fields of organic dye removal,heterogeneous catalysis and CO₂adsorption.The main contents are as follows:1.Rhodamine B is a non-degradable carcinogenic dye.An heteroatom-rich organic porous polymer was constructed through covalent bonds and applied to the adsorption of rhodamine B.The POP material shows a good removal rate for rhodamine B.After5 cycles,the removal rate still remains at about 90%,indicating that it has good stability and recyclability.2.An amorphous organic porous polymer with metallic nickel as the node was prepared.The physical characterization showed that the POP has a large specific surface area and high thermal stability.The polymer was used as a catalyst for the synthesis of asymmetric disulfide compounds,and showed high catalytic activity.In addition,the amorphous organic porous polymer catalyst has good recyclability,and the catalytic activity does not decrease significantly after five cycles.3.Prepared an amorphous polymer rich in copper and nickel.The polymer not only has abundant bimetallic sites,but also has abundant-NH functional groups on the surface,which is an ideal adsorption material for adsorbing carbon dioxide.At the same time,it also exhibits high thermal and chemical stability...