Beta Zeolite Catalysts for Glucose Isomerization
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Solution Overview
Problem
Industrial glucose isomerization using enzymatic catalysts faces challenges such as low activity maintenance over multiple cycles, limited temperature and pH stability, and high operating costs due to the need for purification and enzyme replacement, which restricts the efficiency and scalability of the process.
Innovation Solution
The use of beta zeolites with incorporated tin or titanium metal centers as solid acids, which provide stable and efficient catalysis for glucose isomerization over a wide range of conditions, allowing for higher fructose yields and longer catalyst lifetimes without the need for extensive purification or enzyme replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If enzymatic catalysts are used for glucose isomerization, then high conversion and selectivity are achieved, but catalyst activity is not maintained over multiple cycles and enzyme replacement is required frequently
Solution Approach 1:
The patent creates an artificial enzyme-like catalyst that copies the functional properties of natural enzymes (high selectivity and activity) while using stable inorganic materials (zeolites with metal centers) instead of protein-based enzymes. This allows the catalyst to maintain activity over multiple cycles without the degradation issues of biological enzymes.
Solution Approach 2:
The invention uses composite materials combining zeolite frameworks (providing structural stability and porosity) with incorporated metal centers (Sn, Ti, providing catalytic activity). This composite structure achieves both the high selectivity of enzymes and the stability of inorganic materials, enabling long catalyst lifetime with maintained activity.
2Adaptability or versatility
If enzymatic catalysts are used for glucose isomerization, then high selectivity is achieved, but the catalysts cannot perform over a wide variety of temperatures, pHs, and process conditions
Solution Approach 1:
The patent employs inorganic zeolite-based catalysts that can operate under a wide range of physical and chemical parameters (temperatures from ambient to elevated temperatures, various pH conditions, different solvent systems) while maintaining stable performance. The robust inorganic framework allows parameter optimization without catalyst degradation, enabling versatile process conditions.
3Productivity
If enzymatic isomerization catalysts are used, then high fructose yield is achieved, but extensive purification processes are required and operating costs are high
Solution Approach 1:
The patent extracts the essential catalytic function from complex biological enzyme systems and implements it in simplified inorganic zeolite structures. This eliminates the need for complex purification processes required for enzyme preparation and regeneration, reducing device complexity while maintaining high fructose yield through the catalyst's inherent selectivity.
4Productivity
If enzymatic catalysts are used for isomerization, then high conversion is achieved, but integration with upstream and downstream processes is difficult
Solution Approach 1:
The patent develops universal inorganic catalysts that can be integrated into various process configurations (upstream biomass conversion, mid-process isomerization, downstream fructose transformation). The robust zeolite-based catalysts withstand diverse process conditions and can be combined with other unit operations, enabling seamless process integration while maintaining high glucose conversion.
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 beta zeolite catalysts achieve high glucose conversion and fructose selectivity, maintaining activity across multiple cycles and enabling integration with upstream and downstream processes, thus enhancing the efficiency and cost-effectiveness of sugar isomerization.
Implementation Method 1
The use of beta zeolites with incorporated tin or titanium metal centers as solid acids, which provide stable and efficient catalysis for glucose isomerization
Implementation Method 2
beta zeolites with incorporated tin or titanium metal centers as solid acids, which provide stable and efficient catalysis for glucose isomerization over a wide range of conditions, allowing for higher fructose yields and longer catalyst lifetimes
Data Source
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AI summary
Disclosed are processes for isomerizing saccharides. Also disclosed are processes for converting saccharides to furan derivatives. Also disclosed are processes for converting starch to furan derivatives.