Transfer Hydroformylation Using Aldehyde Formyl Donors
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Solution Overview
Problem
Conventional hydroformylation processes require elevated temperatures and high syngas pressures, leading to increased costs and energy consumption, and produce by-products that are difficult to manage, while also relying on syngas which is a costly and energy-intensive intermediate resource.
Innovation Solution
A transfer hydroformylation process using aldehydes as a formyl source alternative to syngas, employing a metal catalyst system under mild conditions at or near ambient pressure and low temperature to convert higher olefins into higher aldehydes and alcohols, reducing by-product formation and eliminating the need for syngas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hydroformylation processes use elevated temperatures and high syngas pressures, then the reaction proceeds effectively, but energy consumption and operational costs increase
Solution Approach 1:
The patent changes the fundamental parameters of the hydroformylation process by replacing syngas with aldehyde-based formyl donors and using transition metal catalysts with ligands, enabling the reaction to proceed at ambient temperature and pressure while maintaining effective conversion of olefins to higher oxygenates
Solution Approach 2:
The patent introduces aldehydes as intermediary formyl donors that transfer formyl groups to the metal catalyst, which then transfers them to the olefin substrate. This intermediary mechanism replaces the direct syngas insertion pathway, enabling milder reaction conditions
2Ease of manufacture
If conventional hydroformylation uses syngas, then the process is well-established, but by-product formation increases and becomes difficult to manage
Solution Approach 1:
The patent extracts the formyl group from syngas and embeds it in aldehyde molecules, which serve as controlled formyl donors. This extraction allows for more selective formyl transfer and reduces uncontrolled side reactions that lead to difficult-to-manage by-products
Solution Approach 2:
The patent changes the chemical nature of the formyl source from gaseous syngas to liquid/aldehyde formyl donors, fundamentally altering the reaction pathway and selectivity to reduce by-product formation while maintaining ease of manufacture through established catalytic systems
3Productivity
If conventional hydroformylation operates at high syngas pressure, then the reaction rate is maintained, but operational complexity and cost increase
Solution Approach 1:
The patent changes the pressure parameter from high syngas pressure to ambient pressure by using aldehyde-based formyl donors that do not require pressurization, thereby maintaining reaction rate through catalytic efficiency rather than pressure-driven kinetics and significantly reducing operational complexity
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 approach enables the production of higher oxygenates at lower costs and energy inputs, with reduced by-product formation and the ability to operate at ambient pressure, providing a more efficient and cost-effective alternative to traditional hydroformylation methods.
Implementation Method 1
contacting a C3-C41 aldehyde, a C2-C40-olefin, and a metal catalyst and obtaining a C3-C41 aldehyde product and an alkene
Data Source
AI summary
The present disclosure provides a method for forming oxygenates from olefins which includes hydroformylation of aldehydes as a formyl source alternative to syngas. In at least one embodiment, a hydroformylation process is performed at low-temperature and at or near ambient pressure for the conversion of olefins into aldehydes, thus reducing the formation of by-products such as via double bond or skeletal isomerization of the feedstock; or via further conversion of the formed aldehydes and alcohols. In at least one embodiment, the use of gaseous olefinic products (e.g., ethylene) instead of strained olefins (e.g., norbornene) improves the control equilibria in transfer hydroformylation reactions.