Anatase Titanium Dioxide Catalyst for Benzophenone Imine Production
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Solution Overview
Problem
Conventional processes for producing benzophenone imines face challenges in maintaining high conversions and selectivities when increasing the catalyst load, leading to reduced capacity and increased investment costs.
Innovation Solution
A process utilizing titanium dioxide in the anatase modification, either as a powder or in shaped forms, in the presence of ammonia, allows for higher catalyst loads without reducing benzophenone conversion or selectivity, enabling continuous production with increased capacity and reduced reaction volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the catalyst load is increased to expand capacity, then productivity increases, but conversion and selectivity deteriorate in conventional processes
Solution Approach 1:
The invention changes the crystal structure parameter of the titanium dioxide catalyst from conventional forms to specifically the anatase modification. This parameter change in the catalyst's physical structure enables higher catalyst loads to be used without the deterioration of conversion and selectivity that occurs with conventional catalyst forms, thus resolving the contradiction between increased capacity and maintained manufacturing precision.
2Device complexity
If the reaction volume is reduced to lower investment costs, then device complexity decreases, but maintaining high conversion becomes difficult
Solution Approach 1:
By changing the catalyst form to anatase-modified titanium dioxide, the invention enables high conversion rates to be maintained even in reduced reaction volumes. The unique crystal structure of anatase provides superior catalytic activity per unit volume, allowing the system to achieve the same conversion levels in a smaller reactor, thus reducing device complexity and investment costs while maintaining manufacturing precision.
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 achieves improved yields and selectivities, enabling expanded capacity in existing systems or reduced reaction volume in new systems while maintaining defined product quality, with minimum benzophenone imine content and maximum benzophenone content in the output stream.
Implementation Method 1
the production of benzophenonimines according to reaction scheme 1 in the presence of a catalyst, preferably titanium dioxide, in the anatase modification
Data Source
AI summary
Method of producing benzophenoneimine (BPI) of the general formula (I) in which R1 and R2 are C1- to C4-alkoxy, C1- to C2-alkylamine and C2- to C4-dialkylamine and m and n are integers from 0 to 5, and R1 and R2, independently of one another, may be identical or different, in which benzophenone (BP) of the general formula (II) in which R1, R2, m and n have the meanings given above, is reacted in ammonia and in the presence of titanium dioxide, where the titanium dioxide is essentially present in the anatase modification.