Halogenated Activator Oligomerisation Catalyst Productivity
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Solution Overview
Problem
Existing oligomerization processes for olefinic compounds face challenges in productivity and selectivity, particularly when using borane or borate activators, which result in high polymer formation and require significant amounts of expensive aluminoxanes, limiting efficiency and increasing waste volumes.
Innovation Solution
The use of halogenated organic group-containing activators bound to Group 3A or 7B central atoms, which improve catalyst productivity, reduce polymer formation, and allow for lower activator concentrations, thereby reducing waste and costs, while influencing product selectivity, specifically the molar ratio of trimer to tetramer formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If borane or borate activators are used, then catalyst activation is achieved, but polymer formation increases and productivity decreases
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of the activator from conventional borane/borate to halogenated organic group-containing compounds bound to Group 3A or 7B central atoms. This structural parameter change fundamentally alters the activation mechanism, reducing polymer formation while maintaining catalyst activation efficiency.
Solution Approach 2:
The invention replaces expensive aluminoxanes with halogenated activators that are more cost-effective and generate less waste. The new activators require lower concentrations and produce reduced aluminum oxide waste, aligning with the principle of using more economical, short-living substances that minimize disposal costs.
2Reliability
If aluminoxanes are used as activators, then catalyst activation is achieved, but activator costs increase and waste volumes increase
Solution Approach 1:
The patent replaces expensive aluminoxanes with halogenated organic group-containing activators bound to Group 3A or 7B central atoms. These new activators are more cost-effective, require lower concentrations, and generate significantly reduced aluminum oxide waste, directly addressing both cost and waste volume concerns.
Solution Approach 2:
The invention changes the chemical parameters of the activator system by introducing halogenated organic groups and using Group 3A or 7B central atoms instead of traditional aluminoxane structures. This parameter change reduces the amount of aluminum-based waste produced while maintaining effective catalyst activation.
3Productivity
If conventional activators are used, then oligomerisation proceeds, but product selectivity control is limited
Solution Approach 1:
The patent utilizes parameter changes in the activator structure (halogenated organic groups, Group 3A or 7B central atoms) to precisely control product selectivity. By varying the specific halogenated compound and central atom type, the molar ratio of trimer to tetramer can be controlled, enabling fine-tuned manufacturing precision while maintaining high oligomerisation rates.
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
These halogenated activators enhance catalyst activity and selectivity, achieving higher productivity with reduced aluminum oxide waste and lower activator costs, allowing for controlled product ratios of 1-hexene to 1-octene in oligomerization reactions.
Implementation Method 1
a catalyst activator including a halogenated organic group and a co-activator... compounds of the present invention including at least one halogenated organic group bound to a group 3A or group 3B to 7B central atom by means of one or more binding atoms can be used as activators of oligomerisation catalysts
Data Source
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AI summary
According to the present invention there is provided a process for producing an oligomeric product by the oligomerssation of at least one olefinic compound, by contacting the at least one olefinic compound with the combination of an otigomerisation catalyst and a catalyst activator. The catalyst activator is a compound which includes at least one halogenated organic group which is bound to one or more binding atoms selected from the group consisting of a group 5A atom and a group 6A atom, which one or more binding atoms are in turn bound to a central atom selected from the group consisting of a group 3A atom, and a group 3B to 7B transition metal atom. The oligomerisation catalyst includes the combination of i) a source of a transition metal; and ii) a ligating compound of the formula (R1)m X1 (Y) X2 (R2)n The invention also relates to a combination of an oligomerisation catalyst and a catalyst activator as set out above and to the use of such a combination in an oligomerisation process.