Transesterification Catalyst Recovery via Solid Filtration
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Solution Overview
Problem
Current methods for producing (meth) acrylates through transesterification reactions face challenges in catalyst recovery and reuse, leading to decreased yield and increased complexity, particularly due to the need for complicated dehydration and polymer preparation steps.
Innovation Solution
Concurrently using cyclic tertiary amine-based catalyst A and zinc-containing catalyst B allows for the simple separation and recovery of catalysts from the reaction product, enabling their reuse in subsequent transesterification reactions without performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sulfonic acid is used as a catalyst in esterification reaction, then the reaction can proceed, but extraction and washing with aqueous alkali solution is required to remove the catalyst, complicating the process and decreasing productivity
Solution Approach 1:
The invention extracts the catalyst from the reaction mixture through filtration, separating it as a solid component. This allows the catalyst to be removed without requiring aqueous washing steps, thereby maintaining productivity while ensuring reaction completion.
Solution Approach 2:
The catalyst is recovered after the reaction by filtration and can be reused in subsequent reactions. This recovery process eliminates the need for complex removal procedures and maintains both productivity and reaction reliability.
2Reliability
If organotin compound is used as a catalyst in transesterification reaction, then the reaction can proceed, but dehydration operation after extraction with warm water is required, complicating the process and decreasing productivity
Solution Approach 1:
The catalyst is extracted from the reaction mixture through filtration, separating it as a solid component. This eliminates the need for subsequent dehydration operations with warm water, thereby maintaining productivity while ensuring reaction completion.
Solution Approach 2:
The catalyst is recovered after the reaction by filtration and can be reused in subsequent reactions. This recovery process eliminates complex dehydration steps and maintains both productivity and reaction reliability.
3Ease of operation
If gelled polymer catalyst is used in transesterification reaction, then catalyst separation through filtration is possible, but complicated preparation step of special polymer is required, reducing economic advantage
Solution Approach 1:
The invention uses simple, inexpensive catalysts that can be easily filtered and recovered, replacing complex gelled polymer catalysts. This approach maintains ease of operation while significantly improving economic advantage through simpler catalyst preparation and recovery.
4Reliability
If sulfonic acid is used as a catalyst, then esterification reaction can proceed, but saponification of target (meth) acrylate occurs during extraction, decreasing yield
Solution Approach 1:
The catalyst is extracted from the reaction mixture through filtration, separating it as a solid component. This eliminates contact between the catalyst and the product during extraction, preventing saponification and maintaining high yield while ensuring reaction completion.
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 method enables the production of (meth) acrylates at a favorable yield with reduced operational complexity, facilitating their use in industrial applications as crosslinking components in paints, inks, and other materials.
Implementation Method 1
a step of producing a (meth) acrylate by subjecting an alcohol and a monofunctional (meth) acrylate to a transesterification reaction using the following catalyst A and the following catalyst B concurrently
Data Source
AI summary
A method for producing a (meth)acrylate comprises transesterification reaction of an alcohol and a monofunctional(meth) acrylate with catalysts in combination being cyclic tertiary amines having an azabicyclo structure and compounds containing zinc, separating a solid that contains the catalysts from a reaction product containing a (meth)acrylate, and producing a (meth)acrylate by transesterification reaction of an alcohol and a monofunctional (meth)acrylate, while using the recovered solid catalyst.