Rocket Fuel Composition With Heat-Managed Terpene Synthesis
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Solution Overview
Problem
Existing sustainable chemistry processes for synthesizing larger molecules face challenges with high polyaromatic hydrocarbon content, uncontrolled by-product formation, and impurities, leading to inefficiencies and additional purification steps, while coke formation in reactors reduces operational efficiency.
Innovation Solution
A reactant mixture comprising a first compound with a carbon-carbon double bond, a heat transfer fluid, and a stabilizer is used to conduct multistep reactions, minimizing polyaromatic hydrocarbons and impurities, and reducing coke formation, resulting in high selectivity and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If sustainable chemistry processes are used to synthesize larger molecules, then atom efficiency and use of renewable sources are improved, but polyaromatic hydrocarbon content and by-product formation increase
Solution Approach 1:
The patent changes reaction parameters including temperature control (50-200°C), pressure conditions (1-50 atm), and catalyst selection to optimize the balance between atom efficiency and polyaromatic hydrocarbon formation. Specific catalysts are chosen to promote desired reactions while suppressing unwanted side reactions that lead to polyaromatic by-products.
Solution Approach 2:
The patent applies different conditions to different stages of the reaction process, using specific catalysts for specific transformations. For example, different catalysts are used for oligomerization versus cyclization steps, allowing optimization of each step to minimize polyaromatic formation while maintaining atom efficiency.
2Ease of manufacture
If conventional synthesis processes are used, then manufacturing capability is maintained, but multiple steps and purification requirements increase device complexity
Solution Approach 1:
The patent combines multiple reaction steps into integrated process flows where oligomerization, cyclization, and purification occur in sequence without complete isolation of intermediates. This merging reduces the number of separate equipment units and purification steps while maintaining manufacturing capability through continuous processing.
Solution Approach 2:
The patent uses catalysts as intermediaries that facilitate multiple transformations. The catalysts enable reactions to proceed under milder conditions with higher selectivity, reducing the need for extensive purification equipment and simplifying the overall manufacturing process.
3Loss of substance
If reactions are conducted to produce sustainable fuels, then renewable content is improved, but coke formation in reactors increases
Solution Approach 1:
The patent controls reaction parameters including temperature (50-200°C), pressure (1-50 atm), and residence time to minimize coke formation. By operating at moderate temperatures and using controlled pressure conditions, the process maintains high renewable content while suppressing thermal decomposition reactions that lead to coke.
Solution Approach 2:
The patent employs catalysts as intermediaries that facilitate reactions at lower temperatures and with higher selectivity. These catalysts enable the transformation of renewable feedstocks into fuels while preventing the formation of coke by providing alternative reaction pathways that avoid excessive carbon deposition.
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 process produces sustainable aviation and rocket fuels with controlled monocyclic aromatic hydrocarbon content, minimal polyaromatic hydrocarbons, and reduced coke formation, enhancing reactor efficiency and product purity.
Implementation Method 1
a heat transfer fluid, and at least one stabilizer. The invention also provides for a product made from a process using the reactant mixture of the invention
Implementation Method 2
The reactant mixture comprises a first compound comprising at least one carbon-carbon double bond or a precursor therefor; a heat transfer fluid, and at least one stabilizer
Data Source
AI summary
The invention is related to a process for synthesizing a sustainable aviation fuel composition. The process comprises providing a reaction mixture comprising a first compound that is at least one of mevalonolactone, mevalonic acid, mevalonate salt, dehydromevalonic acid, dehydromevalonate salt, levulinic acid, levulinate salt, caproic acid, caprolactone, caproate salt, or combinations thereof. The process then involves converting the first compound in the reaction mixture to provide a first intermediate comprising isoprene. Then, the isoprene in the first intermediate is reacted in the presence of a first heat transfer agent to provide a second intermediate comprising terpenes. Finally, the second intermediate is allowed to react to in the presence of a second heat transfer agent, or alternatively in neat conditions, and optionally in presence of a catalyst to provide the sustainable aviation fuel composition. The sustainable aviation fuel composition made available from the process of the invention is found to be substantially devoid of Sulphur, olefins, MAHs and PAHs while retaining high energy density. Such qualities are deeply appreciated for use of such sustainable aviation fuel compositions as rocket propellants.