Metal-Supported Catalyst for Low-Dosage Conjugated-Diene Polymer Hydrogenation
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Solution Overview
Problem
Existing metal-supported catalysts, particularly those containing platinum group elements, require a high amount to achieve a sufficient hydrogenation ratio, limiting their efficiency in hydrogenation reactions.
Innovation Solution
A metal-supported catalyst with a 20 wt% or more decrease in metal content when shaken in an aqueous solution of polyvinylpyrrolidone under specific conditions, optimized for high catalytic activity, is used to enhance the hydrogenation ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a metal-supported catalyst containing platinum group elements is used, then hydrogenation reaction can be performed, but a large amount of catalyst is required to achieve a sufficient hydrogenation ratio
Solution Approach 1:
The invention changes the physical-chemical parameters of the catalyst by controlling the metal content distribution (20 wt% or more decrease in metal content) and using specific carriers with appropriate surface properties. This parameter optimization enables high catalytic activity with reduced catalyst dosage, directly resolving the contradiction between catalyst quantity and hydrogenation efficiency
Solution Approach 2:
The invention employs porous carrier materials with high surface area to volume ratio, which increases the dispersion and accessibility of metal active sites. This porous structure allows more effective catalytic sites per unit mass of catalyst, reducing the overall catalyst quantity needed while maintaining or improving hydrogenation ratio
2Quantity of substance
If the metal content in the catalyst is reduced, then production cost decreases, but the hydrogenation ratio becomes insufficient
Solution Approach 1:
The invention applies local quality by creating non-uniform metal distribution within the catalyst structure, where regions with 20 wt% or more decrease in metal content provide optimized active sites. This localized optimization ensures high catalytic efficiency with lower overall metal content, maintaining reliability while reducing quantity
Solution Approach 2:
The invention uses composite catalyst structures combining metal nanoparticles with specific carrier materials. This composite approach enhances the catalytic activity per unit of metal through synergistic effects, allowing reduced metal content while maintaining sufficient hydrogenation ratio through the combined properties of metal and carrier
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 catalyst achieves a high hydrogenation ratio even when used in small amounts, increasing production efficiency by improving catalytic activity.
Implementation Method 1
a metal-supported catalyst obtained by supporting a metal and/or a metal compound on a carrier
Implementation Method 2
a rate of decrease in the metal and/or the metal compound of 20 wt % or more when shaken in an aqueous solution of 2.3 wt % of polyvinylpyrrolidone
Data Source
AI summary
A metal-supported catalyst is obtained by supporting a metal and/or a metal compound on a carrier, wherein a rate of decrease in the metal and/or the metal compound contained in the metal-supported catalyst is 20 wt % or more when the metal-supported catalyst is shaken in an aqueous solution of 2.3 wt % of polyvinylpyrrolidone in a hydrogen atmosphere at a temperature of 50° C. at 36 rpm for 1 hour.