Pt-Sixantphos Catalyst Yield in Olefin Hydroformylation

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Solution Overview

Problem

Existing hydroformylation processes for olefins using Pt and Sixantphos do not achieve optimal yields, necessitating a new method to enhance productivity.

Innovation Solution

A process involving presenting an olefin, adding a compound of formula (I) with specific R groups, forming a Pt complex, and introducing CO and H2 under heating conditions, with the option of adding PtBr2 or PtI2 in a single step, to convert the olefin into an aldehyde.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing hydroformylation processes using Pt and Sixantphos are used, then the process is established and operational, but the yield of aldehydes is not optimal

Engineering Contradiction:

Improveyield of aldehydesVSAvoidprocess consistency

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent changes the chemical parameters of the catalyst system by introducing specific phosphine ligands with different steric and electronic properties. The use of ligands with defined cone angles and donor abilities modifies the Pt catalyst's activity and selectivity, thereby increasing aldehyde yield while maintaining process reliability through systematic parameter optimization.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite catalyst systems combining Pt metal centers with organophosphine ligands of specific structures. These composite catalytic systems integrate the metallic catalyst's reactivity with the ligand's stabilizing and directing effects, achieving enhanced yield and selectivity compared to simple Pt salts alone.

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If multiple process steps are used to add compounds separately, then each component can be optimized independently, but the process complexity increases

Engineering Contradiction:

Improveprocess simplicityVSAvoidnumber of process steps

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent merges multiple addition steps into a single operation by using pre-formed Pt complex salts that contain both the metal center and ligand components. This consolidation reduces the number of separate addition steps while maintaining the ability to optimize each component's structure and properties independently during the compound design phase.

Inventive Principle:

Principle #5Merging (Combining)

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 aldehydes, as demonstrated by experiments showing high yields and selectivity, particularly when using PtX2 with different halogens, such as I, Br, and Cl, indicating improved efficiency over prior methods.

Implementation Method 1

platinum-catalyzed hydroformylation of terminal and internal octenes is described

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 2

heating takes place to a temperature in the range of 25 °C to 150 °C

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 3

CO and H2 are added at a pressure in the range of 1 MPa (10 bar) to 6 MPa (60 bar)

Methodology Applied

Scientific EffectPressurisation: Pressurisation

Data Source

PatentEP4198007B1Method for hydroformylation of olefins using pt and sixantphos

Publication Date: 2024.05.15 EVONIK OXENO GMBH & CO KG

AI summary

Method for the hydroformylation of olefins using Pt and Sixantphos.