Saturated Alkyl Ester Production from Furan via Selective Hydrodeoxygenation
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Solution Overview
Problem
Current methods for processing furan compounds result in complete hydrogenation and deoxygenation, producing alkanes and failing to maintain ester or acid functionality, which limits their further processing into additives like surfactants and lubricants.
Innovation Solution
A method involving hydrogenation and hydrodeoxygenation of oxygenated hydrocarbons containing furan groups, using specific catalysts to retain ester or acid functionality, producing saturated alkyl esters or acids that can be used in a variety of products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If complete hydrogenation and deoxygenation is performed on furan compounds, then alkanes are produced, but ester or acid functionality is lost
Solution Approach 1:
The patent divides the processing into two separate stages: first hydrogenation to reduce multiple bonds while preserving ester groups, then selective hydrodeoxygenation to remove oxygen from the furan ring while maintaining ester functionality. This segmentation allows each stage to be optimized independently, preventing complete deoxygenation that would eliminate ester groups.
Solution Approach 2:
The patent applies partial hydrogenation and partial hydrodeoxygenation rather than complete processing. The hydrogenation reduces multiple bonds but stops before complete saturation, and the hydrodeoxygenation removes oxygen from the ring structure while preserving the ester functional groups, achieving the desired balance between productivity and functionality retention.
2Ease of manufacture
If conventional hydrodeoxygenation is used, then alkanes are produced, but the products cannot be further processed into surfactants and lubricants
Solution Approach 1:
The patent changes the reaction parameters and catalyst selection to preserve ester functionality throughout the processing stages. By controlling temperature, pressure, and catalyst type in both hydrogenation and hydrodeoxygenation steps, the process produces esters rather than alkanes, enabling further processing into surfactants and lubricants while maintaining manufacturing simplicity.
3Reliability
If biomass is converted to furan compounds for fuel production, then renewable energy is achieved, but ester functionality required for chemical products is lost
Solution Approach 1:
The patent performs preliminary hydrogenation of furan compounds to reduce multiple bonds and stabilize the structure, then follows with controlled hydrodeoxygenation that removes oxygen from the ring while preserving ester groups. This preliminary action sequence ensures that the renewable biomass-derived esters maintain their chemical functionality for further product development.
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 allows for the production of saturated alkyl esters and acids from renewable biomass sources, preserving ester functionality, enabling their use in surfactants, solvents, and lubricants, and offering cost and energy savings over conventional processes.
Implementation Method 1
hydrogenating the oxygenated hydrocarbon in the presence of a first catalyst to reduce the number of multiple bonds
Implementation Method 2
hydrodeoxygenating the reduced mixture in the presence of a second catalyst to form a saturated alkyl ester or acid
Data Source
AI summary
Disclosed herein is the production of saturated alkyl esters or acids from furan materials. The starting compounds contain furan, ketone, and ester or acid functional groups and may be biologically-derived. The method includes hydrogenating the starting compound to form a reduced mixture. The method further includes hydrodeoxygenation of the reduced mixture to yield a saturated alkyl ester or acid. The saturated alkyl ester or acid can be unbranched or branched. The ester and acid products have a wide variety of applications and may be further processed into surfactants, solvents, and lubricants suitable for use in consumer products.