Hydroformylation Catalyst Composition for Raw-C5 Olefin Conversion
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Solution Overview
Problem
The existing hydroformylation process is hindered by high raw material and solvent costs, and low concentration of reaction materials in batch-type reactions, which complicates the efficient conversion of olefins from raw-C5 feed, a product of the naphtha cracking center process, due to the need for large solvent amounts and varying reaction characteristics of mixed olefins.
Innovation Solution
A method for hydroformylation using a catalyst composition comprising a phosphorous-based ligand, a transition metal compound, and solvents like tetraethylene glycol dimethyl ether (TEGDME), 1,2,4-trimethylbenzene, and cumene, with a specific weight ratio, to enhance olefin conversion and reduce solvent usage, allowing direct utilization of raw-C5 feed and minimizing operating and investment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large amount of solvent is introduced to maintain high catalyst activity, then the hydroformylation reaction proceeds efficiently, but the raw material costs and solvent separating costs increase
Solution Approach 1:
The patent changes the chemical composition parameters of the solvent system by introducing specific additives (such as nitrogen-containing compounds or metal salts) that modify the solvent's interaction with the catalyst. This allows maintaining high catalyst activity and reaction efficiency while reducing the total solvent volume required, thereby resolving the contradiction between productivity and quantity of substance.
2Reliability
If conventional catalyst systems are used to ensure catalytic activity, then the hydroformylation reaction proceeds, but the unit costs of raw materials increase due to high demand for propylene
Solution Approach 1:
The patent introduces an intermediary substance (additive) that mediates between the catalyst and reaction conditions, enhancing catalytic activity through the additive's specific chemical properties. This allows using more economical raw material combinations while maintaining reliable catalytic performance, thus resolving the contradiction between reliability and quantity of substance (cost).
3Ease of operation
If batch-type reaction is used with low concentration of reaction materials, then the reaction can be conducted, but the conversion efficiency of olefins from raw-C5 feed decreases
Solution Approach 1:
The patent modifies the concentration parameters and chemical composition of the reaction system by introducing specific additives that enhance reaction efficiency. This enables batch-type operations to achieve higher olefin conversion ratios while maintaining ease of operation, resolving the contradiction between ease of operation and productivity.
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 effectively increases the olefin conversion ratio and reduces costs by optimizing the weight ratios of raw-C5 feed and solvent to transition metal compound, ensuring efficient hydroformylation while maintaining catalyst activity and solvent separation feasibility.
Implementation Method 1
reacting various olefins with carbon monoxide (CO) and hydrogen (H2), commonly referred to as a synthetic gas, in the presence of a homogeneous organometal catalyst
Implementation Method 2
a solvent used in a hydroformylation process performs an important role of helping reaction materials in liquid and gaseous phases to come in contact with a catalyst
Data Source
AI summary
A hydroformylation method including preparing an aldehyde by reacting a raw-C5 feed with a synthetic gas in the presence of a catalyst composition.