Ionic Polymer Catalysts for Low-Temperature Biomass Hydrolysis
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Solution Overview
Problem
Existing methods for processing biomass to produce prebiotic oligosaccharides and other fine chemicals face challenges such as high temperature requirements, formation of byproducts, inefficient catalysis, catalyst leaching, and high costs due to extensive separation processes, making them unsustainable and costly for food-grade products.
Innovation Solution
Development of ionic polymers with specific structural designs and anionic compositions that are stable and non-leaching, used in membranes or solid supports to catalyze the hydrolysis of biomass into fine chemicals like sugars, furanic compounds, and polyphenols, allowing for efficient production in water without the need for ionic liquids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hydrothermal hydrolysis is used to extract oligosaccharides, then polysaccharides can be released from raw material, but high temperature (>190°C) is required and side products of sugar dehydration are formed
Solution Approach 1:
The invention changes the temperature parameter from high (>190°C) to low (below 100°C) by using ionic liquids as solvent, enabling hydrolysis at milder conditions while maintaining efficiency and reducing harmful side products
Solution Approach 2:
Ionic liquids serve as an intermediary substance that facilitates hydrolysis at low temperatures by dissolving cellulose and hemicellulose, making the process more selective and reducing dehydration side products
2Object-generated harmful factors
If enzymatic hydrolysis is used, then byproduct formation is reduced, but efficiency is much lower with long reaction times and additional pre-treatment and post-treatment required
Solution Approach 1:
The invention merges the advantages of enzymatic hydrolysis (selectivity, low byproducts) with chemical hydrolysis (speed, efficiency) by using ionic liquids that enable rapid low-temperature hydrolysis without extensive pre-treatment or post-treatment steps
Solution Approach 2:
By changing the temperature parameter to low conditions (below 100°C) and using ionic liquids as solvent, the invention achieves both high selectivity (low byproducts) and high reaction rates (short reaction times without extensive treatment)
3Productivity
If ionic liquids are used as solvent for cellulose hydrolysis, then dissolution allows increased reaction rates, but leaching and separation difficulties limit application
Solution Approach 1:
The invention focuses on recovering and reusing ionic liquids after hydrolysis through established methods, transforming the waste removal problem into a resource recovery process that maintains both high reaction rates and environmental sustainability
Solution Approach 2:
By using specific ionic liquid compositions and adjusting process parameters (temperature, pressure, water content), the invention optimizes both dissolution efficiency for high reaction rates and facilitates easier separation and recovery of the ionic liquid
4Object-affected harmful factors
If solid acid catalysts are used, then environmental friendliness is improved and downstream processing is simplified, but heterogeneous catalysis has low yields due to inefficient mixing
Solution Approach 1:
Ionic liquids serve as an intermediary that enhances mass transfer and mixing between solid acid catalysts and biomass, enabling efficient contact and high yields while maintaining the environmental benefits of solid acid catalysts
Solution Approach 2:
The invention uses composite systems combining solid acid catalysts with ionic liquid solvents, creating a synergistic system that achieves both heterogeneous catalysis benefits (environmental friendliness, simplified processing) and homogeneous mixing advantages (high yields, efficient reaction
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 ionic polymers enable efficient, low-temperature hydrolysis with minimal byproduct formation, enabling the production of food-grade chemicals with high yields and ease of separation, reducing costs and environmental impact.
Implementation Method 1
The selective cleavage of chemical bonds results in formation of different types of poly and/or oligosaccharides
Implementation Method 2
ionic polymers... to catalyze the hydrolysis of biomass into fine chemicals
Data Source
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AI summary
The invention provides ionic polymers (IP) consisting of anions and a polymeric backbone containing cations. The invention also provides the ionic polymers incorporated in membranes or attached to solid supports and use of the ionic polymers in processing of biomass.