Biomass Conversion Catalyst Tolerates Ash and Degradation Products
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Solution Overview
Problem
Current methods for deconstructing biomass to produce fuels and chemicals are inefficient and costly due to the need for distinct processing conditions for cellulose, hemicellulose, and lignin, and are hindered by the presence of sugar degradation products and ash components that reduce conversion efficiencies.
Innovation Solution
A method involving the catalytic reaction of an aqueous biomass-derived feedstock with hydrogen in the presence of a Group VIII metal catalyst to produce oxygenated compounds, which tolerates sugar degradation products and ash, enhancing the conversion process and producing oxygenated compounds such as alcohols, ketones, and cyclic ethers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distinct processing conditions are used for cellulose, hemicellulose, and lignin, then conversion efficiency of each component is improved, but process complexity and cost increase
Solution Approach 1:
The patent combines multiple processing functions into a single reactor system that can handle cellulose, hemicellulose, and lignin simultaneously. The integrated process uses a unified set of processing conditions rather than separate distinct conditions for each biomass component, thereby reducing process complexity while maintaining conversion efficiency through the synergistic effect of the combined approach.
Solution Approach 2:
The invention employs a universal processing method that can convert all three major biomass components (cellulose, hemicellulose, and lignin) using the same reaction conditions and catalyst system. This multi-functional approach eliminates the need for separate processing lines for each component, reducing overall process complexity while achieving comprehensive biomass conversion.
2Productivity
If sugar degradation products are present in the feedstock, then the process becomes more tolerant and efficient, but product purity decreases
Solution Approach 1:
The patent converts the traditionally harmful sugar degradation products into beneficial process promoters. The method utilizes these degradation products to enhance catalyst performance and improve overall process efficiency. By accepting and leveraging the presence of degradation products rather than eliminating them, the process achieves higher efficiency while the catalyst system selectively produces pure oxygenated compounds.
Solution Approach 2:
The invention changes the operating parameters and catalyst composition to accommodate and utilize sugar degradation products. By adjusting reaction conditions and catalyst properties, the process transforms the presence of degradation products from a purity issue into an efficiency advantage, maintaining high product purity through selective catalysis despite the complex feedstock composition.
3Ease of manufacture
If ash components are present in the feedstock, then processing cost is reduced, but conversion efficiency decreases
Solution Approach 1:
The patent employs a catalyst system that is tolerant to ash components, allowing the use of lower-cost, less-purified biomass feedstocks. The catalyst is designed to withstand the presence of ash without significant deactivation, enabling the processing of economical feedstock sources while maintaining acceptable conversion efficiency. This approach accepts some efficiency reduction in exchange for using cheaper, ash-containing biomass materials.
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 effectively converts biomass into oxygenated compounds, improving the yield and efficiency of the process while minimizing the impact of sugar degradation products and ash, making biomass a more viable alternative to petroleum-based fuels.
Implementation Method 1
reacting the biomass-derived feedstock with hydrogen in the presence of a catalyst to produce a reaction product
Implementation Method 2
reacting the biomass-derived feedstock with hydrogen in the presence of a catalyst to produce a reaction product comprising one or more oxygenated compounds
Data Source
AI summary
The present invention provides processes, methods, and systems for converting biomass-derived feedstocks to liquid fuels and chemicals. The method generally includes the reaction of a hydrolysate from a biomass deconstruction process with hydrogen and a catalyst to produce a reaction product comprising one of more oxygenated compounds. The process also includes reacting the reaction product with a condensation catalyst to produce C4+ compounds useful as fuels and chemicals.