Pt DPEphos Catalyst Hydroformylation Yield
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Solution Overview
Problem
Existing hydroformylation processes for olefins, such as those using DPEphosPtCl2, face limitations in yield and efficiency, necessitating the development of a new method to enhance productivity.
Innovation Solution
A process involving the presentation of an olefin, addition of a compound according to formula (I), a Pt compound capable of forming a complex, a bromine or iodine compound, and subsequent supply of CO and H2, with heating, to convert the olefin into an aldehyde, potentially using PtBr2 or PtI2 in a single step, and optimizing reaction conditions like pressure and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing hydroformylation processes using DPEphosPtCl2 are used, then the process is established and reliable, but the yield and efficiency are limited
Solution Approach 1:
The patent changes the chemical parameters of the catalyst system by replacing DPEphosPtCl2 with DPEphosPtBr2 or DPEphosPtI2. This substitution of the metal halide component (Cl2 → Br2/I2) modifies the catalytic activity and yield while maintaining the overall hydroformylation process framework, thereby improving productivity without sacrificing reliability
Solution Approach 2:
The patent creates a composite catalyst system combining DPEphos ligand with PtBr2 or PtI2. This composite approach synergizes the stabilizing effect of the bidentate phosphine ligand with the enhanced reactivity of the bromide/iodide platinum complex, achieving both high yield and process reliability simultaneously
2Productivity
If multiple process steps are used for adding compounds, then each step can be optimized independently, but the process complexity increases
Solution Approach 1:
The patent merges steps c) and d) into a single operation by adding both the Pt compound and the bromine/iodine compound simultaneously. This consolidation reduces process complexity from multiple sequential steps to a single addition step, while maintaining or enhancing reaction efficiency through the in-situ formation of the active catalyst complex
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 yield and selectivity in hydroformylation reactions, as demonstrated by the experimental results showing improved conversion of 1-octene to aldehyde, with yields ranging from 76% to 45% depending on the halogen used.
Implementation Method 1
a catalytic amount of a compound according to formula (I)... a Pt compound... to convert the olefin into an aldehyde
Implementation Method 2
addition of a compound according to formula (I)... a Pt compound capable of forming a complex, a bromine or iodine compound
Implementation Method 3
supply of CO and H2, with heating, to convert the olefin into an aldehyde... CO and H2 are supplied at a pressure in a range of 1 MPa (10 bar) to 6 MPa (60 bar)
Implementation Method 4
subsequent supply of CO and H2, with heating, to convert the olefin into an aldehyde... the heating takes place to a temperature in the range of 25°C to 150°C
Data Source
AI summary
Method for the hydroformylation of olefins using Pt and DPEphos.