一种镍和助剂金属M掺杂的钛硅分子筛M-Ni-ETS-10的制备方法及其应用
The preparation method of titanium-silicon molecular sieve M-Ni-ETS-10 doped with Ni and auxiliary metal M solves the problems of excessive hydrogenation of acetylene and poor selectivity of ethylene in the existing catalyst process, and achieves high hydrogenation activity and stability, which is suitable for industrial ethylene production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAN ORIGIN CHEM TECH
- Filing Date
- 2023-12-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing catalysts suffer from poor C2H4 selectivity due to excessive acetylene hydrogenation, as well as problems such as unsaturated hydrocarbon polymerization and coking, and catalyst sintering during acetylene hydrogenation. These issues result in short catalyst life and make it difficult to achieve both high hydrogenation activity and high olefin selectivity.
A method for preparing Ni-doped titanium-silicon molecular sieve M-Ni-ETS-10 was adopted. The Ni-doped titanium-silicon molecular sieve was synthesized by hydrothermal reaction. The high specific surface area of ETS-10 and the spatial isolation effect of the auxiliary metal M enabled the active component Ni to have good dispersibility, reducing the excessive hydrogenation and polymerization of ethylene on the Ni surface and improving the ethylene selectivity and stability of the catalyst.
It improves the ethylene selectivity and stability of the catalyst, reduces the ethylene loss rate, extends the catalyst's service life, and lowers the cost, making it suitable for industrial applications.