Titanium Dioxide Catalyst System for Room Temperature Olefin Polymerization
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Solution Overview
Problem
Existing titanium-containing catalyst systems for olefin polymerization require conventional coating and are not effective for polymerizing olefins at normal pressure and room temperature without additional components.
Innovation Solution
Employing specific powders such as titanium dioxide, zirconium dioxide, or silicon dioxide, combined with aluminum alkyls or aluminoxanes, to create a catalyst system that can polymerize olefins without the need for conventional catalyst coating, allowing for high molecular weight polymer production at room temperature and normal pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional catalyst coating is used with titanium-containing catalyst systems, then the catalyst can be prepared with known properties, but the system cannot polymerize olefins at normal pressure and room temperature without additional components
Solution Approach 1:
The invention changes the operational parameters from conventional high-pressure/temperature conditions to normal pressure and room temperature, enabling olefin polymerization under mild conditions while maintaining catalyst activity through the specific powder-co-catalyst combination
Solution Approach 2:
The invention extracts and eliminates the need for additional catalyst components and conventional coating processes, achieving polymerization activity through the intrinsic properties of the powder-co-catalyst system alone
2Productivity
If conventional catalyst systems are used, then polymerization can proceed, but additional components and complex coating processes are required
Solution Approach 1:
The invention removes unnecessary additional catalyst components and simplifies the system to essentially two elements (powder and co-catalyst), eliminating the need for complex multi-component catalyst systems and extensive coating procedures
Solution Approach 2:
The powder-co-catalyst system serves multiple functions simultaneously: the powder provides structural support and active sites, the co-catalyst enables olefin polymerization, and together they achieve polymerization under mild conditions without requiring separate functional components
3Manufacturing precision
If conventional catalyst coating is applied, then the catalyst structure is established, but the titanium-to-aluminum ratio cannot be reduced to achieve low ratio polymerization
Solution Approach 1:
The invention fundamentally changes the compositional parameter by reducing the titanium-to-aluminum ratio to less than 1:1, achieving a low ratio system that enables polymerization under mild conditions while maintaining structural integrity through the powder-co-catalyst architecture
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
This approach enables the production of high bulk density, ultra-high molecular weight polymers with a low titanium-to-aluminum ratio, suitable for industrial processing, and can be used in existing installations without refitting, with no reactor wall deposits during gas-phase polymerization.
Implementation Method 1
catalyst systems consisting of a support and a co-catalyst, and their use for olefin polymerisation
Data Source
AI summary
The invention relates to methods for producing cesium hydroxide solutions during which: cesium-containing ore is disintegrated with sulfuric acid while forming a cesium aluminum sulfate hydrate, which is poorly soluble at low temperatures; the formed cesium alum is separated away in the form of a solution from the solid ore residues; the aluminum is precipitated out of the cesium alum solution while forming a cesium sulfate solution; the formed cesium sulfate solution is reacted with barium hydroxide or stontium hydroxide while forming a cesium hydroxide solution, and; the formed cesium hydroxide solution is concentrated and purified.