CuAl2O4 Hydrogenation Catalyst for Acid and Water Stability
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Solution Overview
Problem
Existing hydrogenation catalysts for carbonyl groups in organic compounds are susceptible to degradation by acidic and aqueous media, leading to mechanical instability and leaching of catalytically active metals, necessitating the development of environmentally friendly alternatives with comparable stability and performance.
Innovation Solution
A catalyst comprising 17.5% to 34.5% copper in the form of CuAl2O4 spinel, prepared through specific precipitation, calcination, and shaping processes, offering enhanced mechanical stability and resistance to acidic and aqueous conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If chromium-containing catalysts are used to improve acid stability, then resistance to acidic compounds is improved, but environmental compatibility deteriorates
Solution Approach 1:
The invention changes the chemical composition parameters by formulating a catalyst with copper content of 17.5-34.5% by weight and at least 70% copper spinel content, replacing chromium-containing compounds with environmentally compatible copper-based catalysts while maintaining acid stability through optimized compositional parameters
Solution Approach 2:
The invention uses composite material structure by combining copper with aluminum to form copper spinel CuAl2O4, creating a composite catalyst system that achieves both environmental compatibility and enhanced resistance to acidic compounds through the synergistic properties of the composite structure
2Object-generated harmful factors
If conventional copper-based catalysts are used, then environmental compatibility is improved, but mechanical stability and resistance to acidic compounds deteriorate
Solution Approach 1:
The invention optimizes physical-chemical parameters by controlling copper content within 17.5-34.5% by weight and ensuring at least 70% copper spinel content, which transforms the mechanical properties and acid resistance of the catalyst while maintaining environmental compatibility
Solution Approach 2:
The invention creates a composite copper-aluminum spinel structure that combines the environmental benefits of copper-based materials with the mechanical stability and acid resistance characteristics of the spinel composite structure
3Productivity
If copper content is increased to improve catalytic activity, then catalytic performance is improved, but susceptibility to acid attack and metal leaching worsens
Solution Approach 1:
The invention optimizes the copper content parameter within the specific range of 17.5-34.5% by weight and controls the copper spinel content to be at least 70%, achieving an optimal balance between catalytic activity and resistance to metal ion loss through precise parameter control
Solution Approach 2:
The invention uses the copper-aluminum spinel composite structure where the spinel framework provides structural stability that prevents copper leaching, while still maintaining high catalytic activity through the copper components in the composite
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 catalyst exhibits improved resistance to acidic and aqueous media, maintaining structural integrity and reducing metal ion loss, thus maintaining catalytic activity under harsh conditions.
Implementation Method 1
catalyst for hydrogenation of carbonyl groups in organic compounds
Implementation Method 2
combining (i) an aqueous solution A of copper compounds and optionally transition metal compounds and (ii) an aqueous alkaline solution B to form a precipitate
Implementation Method 3
calcining the dried precipitate from step c) at a temperature of between 200 and 800° C. for a period of between 30 min and 4 h
Data Source
AI summary
The present invention relates to an improved catalyst on the basis of a shaped catalyst body for hydrogenating carbonyl groups in organic compounds under the effect of acids and water, characterized in that the shaped catalyst body contains copper in an amount of 17.5 to 34.5 wt. %, relative to the shaped catalyst body and the copper is present in the shaped catalyst body to at least 70% in the form of a copper spinel CuAl2O4. The invention also relates to the production of the catalyst an to the use of same in the hydrogenation of carbonyl groups in organic compounds in the presence of acids and/or water.