Zeolite molecular sieve It has a unique regular crystal structure, each of which has a certain size and shape of the pore structure, and has a large specific surface area. Most zeolites have strong acid centers on the surface and strong Coulomb fields in the crystal pores for polarization. These characteristics make it an excellent catalyst. Heterogeneous catalytic reaction is carried out on the solid catalyst, and the catalytic activity is related to the size of the crystal pore of the catalyst. When zeolite molecular sieve is used as catalyst or catalyst carrier, the catalytic reaction is controlled by the crystal pore size of zeolite molecular sieve. The size and shape of crystal pores and channels can play a selective role in the catalytic reaction. Under general reaction conditions, zeolite molecular sieves play a leading role in the reaction direction, showing shape selective catalytic performance, which makes zeolite molecular sieves have strong vitality as a new catalytic material.

Although zeolite molecular sieves show good performance in catalytic reactions such as MTO and SCR as well as gas adsorption/separation, there are problems such as carbon deposition and poor high-temperature catalytic activity in catalysis, and the modification of this molecular sieve is not enough to completely solve these problems. More effective modification is needed to improve its own performance, and in-depth study of its catalytic mechanism, It is the future development direction of zeolite molecular sieves.