Pt-Thixantphos Halogen Complexes for Hydroformylation Yield
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Solution Overview
Problem
Existing hydroformylation reaction catalysts fail to achieve high yields and selectivity.
Innovation Solution
A Pt-thixantphos-iodine or Pt-thixantphos-bromine complex is used, comprising platinum (Pt) with a specific ligand structure and iodine or bromine ligands, for catalyzing hydroformylation reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PtCl2 is used as catalyst for hydroformylation, then the reaction can proceed, but the yield is low
Solution Approach 1:
The patent applies parameter changes by substituting the halogen ligand in the Pt complex from chlorine (PtCl2) to iodine (PtI2) or bromine (PtBr2). This chemical parameter change transforms the catalyst's properties, enabling it to achieve high yields (95-99%) and selectivity in hydroformylation reactions, whereas PtCl2 only gives low yields despite the reaction proceeding.
2Manufacturing precision
If existing hydroformylation catalysts are used, then the reaction can occur, but selectivity is poor
Solution Approach 1:
The patent resolves this contradiction through parameter changes in the catalyst composition, specifically using PtI2 or PtBr2 instead of conventional catalysts. This change simultaneously improves both selectivity (manufacturing precision) and yield (productivity), achieving up to 99% yield with high selectivity for the linear aldehyde isomer in hydroformylation of 1-octene.
3Productivity
If PtCl2 is used for hydroformylation, then the reaction proceeds, but both yield and selectivity are low
Solution Approach 1:
The patent applies parameter changes by changing the halogen ligand from chlorine to iodine or bromine in the Pt complex. This single parameter change resolves both aspects of the contradiction, achieving high yield (95-99%) and high selectivity simultaneously, whereas PtCl2 gives low values for both parameters.
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 complex achieves high yields and selectivity in hydroformylation reactions, as demonstrated by experimental results showing yields of up to 99% for PtI2 and 95% for PtBr2, while PtCl2 yields are low.
Implementation Method 1
The complex achieves high yields and selectivity in hydroformylation reactions, as demonstrated by experimental results showing yields of up to 99% for PtI2 and 95% for PtBr2
Data Source
AI summary
Pt-thixantphos-iodine complex and Pt-thixantphos-bromine complex, and the use thereof for catalysis of a hydroformylation reaction.