Catalyst, process for its preparation and use
By combining MXene with organoaluminum compounds, a highly efficient catalyst is formed, which solves the problem of improving catalyst chain mobility and enables high-yield and high-branching-degree olefin polymerization, especially the adjustment of the proportion of long branches above C6.
CN122344281APending Publication Date: 2026-07-07CHINA PETROLEUM & CHEMICAL CORP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-01-06
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
In existing technologies, it is difficult to improve the catalyst chain walking ability, the synthesis route is complex, the catalyst yield is low, and it is difficult to adjust the proportion of C6 and above long branches.
Method used
A catalyst is formed by combining MXene and/or modified MXene with organoaluminum compounds. By adjusting the reaction conditions, the chain walking ability and branching degree are improved, the hydrophobic properties are enhanced, and the loading rate is high.
Benefits of technology
High yield and high branching degree of catalyst were achieved, especially by increasing the proportion of long branches above C6 and lowering the melting point.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122344281A_ABST
Abstract
The application relates to the technical field of olefin polymerization, and discloses a catalyst and a preparation method and application thereof. The catalyst comprises component A, an organic aluminum compound and a post-transition metal complex; wherein the component A is MXene and / or modified MXene; the modified MXene contains a structure shown in formula (I); in the formula (I), M is selected from carbon, silicon, aluminum and boron; R is an alkyl group; X is halogen; n and m are integers from 0 to k, n and m are not 0 at the same time, and k-n-m>=1; and k is the valence state of M. The catalyst is prepared by matching MXene and / or modified MXene and an organic aluminum compound, the chain walking ability of the catalyst is improved, and complex ligand design and synthesis are not needed. When the catalyst is used for catalyzing olefin polymerization, the branching degree of the obtained product is improved, the proportion of branched chains can be adjusted, and the content of long branched chains with a length of more than C6 is improved.
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