Hydroformylation Yield via Pt Halogen Derivative Selection
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Solution Overview
Problem
Existing hydroformylation processes using Pt with Cl2 suffer from low yield, necessitating an improvement in olefin conversion to aldehydes.
Innovation Solution
A process involving the presentation of an olefin, addition of a compound with specific Pt and halogen derivatives, followed by CO and H2, with optional heating, to enhance yield and selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PtCl2 is used as the catalyst, then the hydroformylation process can proceed, but the yield of aldehyde production is low
Solution Approach 1:
The patent changes the chemical parameter of the platinum compound from chloride (PtCl2) to iodide (PtI2) or bromide (PtBr2). This parameter change in the catalyst composition significantly improves the hydroformylation yield, with PtI2 and PtBr2 showing substantially higher productivity compared to PtCl2, while maintaining the same catalytic function.
2Productivity
If PtI2 or PtBr2 is used instead of PtCl2, then the yield increases significantly, but the selection of appropriate halogen compound becomes more critical
Solution Approach 1:
The patent systematically explores different halogen compounds (iodides, bromides, chlorides) and their equivalents, establishing structure-activity relationships. By changing the halogen parameter and optimizing its amount (0.1-10 equivalents relative to Pt), the patent achieves high yield while providing clear guidance for process selection, thereby managing complexity through systematic parameter optimization.
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 significantly increases the yield of aldehyde production compared to prior art, as demonstrated by experimental results showing higher yields with PtI2 and PtBr2 compared to PtCl2.
Implementation Method 1
the use of Pt(Xantphos)Cl 2 for the hydroformylation of 2-tosyloxystyrene is described
Data Source
AI summary
Method for the hydroformylation of olefins using Pt, halogen and xanthos derivatives.