Olefin Oligomerization Catalyst Uniform Metal Distribution
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Solution Overview
Problem
The production of 1-hexene through ethylene trimerization using existing olefin oligomerization catalysts results in the formation of hollow polyethylene particles, which complicates separation and drying processes due to uneven distribution of transition metal compounds on the catalyst surface.
Innovation Solution
A novel olefin oligomerization catalyst is developed by contacting a transition metal compound with a preliminary contact solid catalyst component, where the solid catalyst component is prepared by supporting an organoaluminum oxy-compound on a solid carrier, and further modifying it with organometallic compounds to evenly distribute the transition metal, preventing the formation of hollow polymer particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a transition metal compound is supported on a solid carrier to simplify the reaction process, then the reaction process is simplified, but hollow polyethylene particles are formed by-produced
Solution Approach 1:
The patent applies preliminary action by pre-modifying the solid catalyst component with organometallic compounds or organoaluminum oxy-compounds before contacting it with the transition metal compound. This preliminary modification ensures uniform distribution of the transition metal on the catalyst surface, preventing the formation of hollow polyethylene particles while maintaining process simplification
2Productivity
If existing olefin oligomerization catalysts are used for ethylene trimerization, then 1-hexene is produced, but hollow polyethylene particles are formed which complicate separation and drying processes
Solution Approach 1:
The patent applies preliminary action by pre-modifying the solid catalyst component with organometallic compounds or organoaluminum oxy-compounds before contacting it with the transition metal compound. This preliminary modification ensures uniform distribution of the transition metal on the catalyst surface, preventing the formation of hollow polyethylene particles and simplifying subsequent separation and drying processes
3Ease of manufacture
If transition metal compounds are unevenly distributed on the catalyst surface, then the catalyst can be prepared, but hollow polyethylene particles are formed
Solution Approach 1:
The patent applies local quality by using organometallic compounds or organoaluminum oxy-compounds as modifiers that locally enhance the distribution of transition metal atoms on the catalyst surface. This creates a uniform local environment for oligomerization, preventing hollow particle formation while maintaining ease of catalyst preparation
Solution Approach 2:
The patent uses organometallic compounds or organoaluminum oxy-compounds as intermediary substances that facilitate uniform distribution of the transition metal compound on the solid carrier surface. These intermediaries act as bridging agents between the solid carrier and transition metal, ensuring homogeneous catalytic sites
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The new catalyst ensures that polymer particles produced in the olefin oligomerization process are non-hollow, simplifying the separation and drying processes, and enhancing the operational efficiency of the production process.
Implementation Method 1
supporting an organoaluminum oxy-compound on a solid carrier
Implementation Method 2
olefin oligomerization catalyst obtained by contacting a transition metal compound with a preliminary contact solid catalyst component
Data Source
AI summary
The objectives of the present invention are to provide an olefin oligomerization catalyst that allows properties of particles of a polymer component by-produced in an α-olefin production process to be obtained in such a shape that does not negatively affect a separation process for the particles and to provide a method for producing an olefin oligomer performed in the presence of the olefin oligomerization catalyst. The objectives can be achieved by the olefin oligomerization catalyst obtained by contacting (D) a transition metal compound with a preliminary contact solid catalyst component (II) obtained by contacting a solid catalyst component (I) formed by supporting (B) an organoaluminum oxy-compound (b-2) on (A) a solid carrier with (C) at least one compound selected from the group consisting of an organometallic compound (c-1), an organoaluminum oxy-compound (c-2), and a compound (c-3) that reacts with the transition metal compound (D) to form a pair of ion.