Patent ID: 11884632
Assignee: ZHEJIANG HENGYI PETROCHEMICAL RESEARCH INSTITUTE CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 4:
5. The method of claim 4, wherein the metal element is at least one selected from the group consisting of transition metal elements, group IIIA elements, and group IVA elements;
the transition metal element is at least one selected from the group consisting of group IB, group JIB, group IVB, group VB, group VIB, group VIIB, and group VIII metal elements; and/or
the content of the metal elements in the molecular sieve is 6-90 μg/g, based on the total amount of the molecular sieve; and/or
the molecular sieve has a BET specific surface area within a range of 400-500 m2/g, a crystalline grain particle size within a range of 0.1-0.3 μm, and an external specific surface area within a range of 30-60 m2/g.