Cobalt Catalyst Mixed Oxide Support Carboxyanhydride
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Solution Overview
Problem
Current Fischer-Tropsch synthesis catalysts, despite the addition of various organic compounds, do not consistently achieve sufficient performance improvements to make the process profitable, and the methods for implementing these catalysts are complex and challenging for industrial deployment.
Innovation Solution
A catalyst with an active cobalt phase deposited on a support containing a mixed oxide phase of cobalt and/or nickel, prepared using a process that involves contacting the support with cobalt and nickel precursors and an organic compound of the carboxyanhydride family, which enhances the catalyst's activity and selectivity through increased cobalt dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If various organic compounds are added to Fischer-Tropsch catalysts to improve activity, then catalyst activity is improved, but the manufacturing complexity increases and industrial deployment becomes challenging
Solution Approach 1:
The patent extracts and isolates the most effective organic compound (carboxyanhydride) from the complex mixture of various organic additives previously used. By focusing on this single compound class with specific molecular weight range (100-500 g/mol), the invention simplifies the manufacturing process while maintaining the activity enhancement benefit, directly resolving the contradiction between improved catalyst activity and manufacturing complexity
Solution Approach 2:
The patent changes the key parameter of organic compound selection from a broad range of complex organic additives to a specific molecular weight range (100-500 g/mol) and chemical family (carboxyanhydrides). This parameter specification simplifies the manufacturing process by providing clear, actionable guidelines for catalyst preparation while ensuring consistent activity improvement, thereby reducing manufacturing complexity without sacrificing productivity enhancement
2Productivity
If various organic compounds are added to Fischer-Tropsch catalysts to improve performance, then catalyst performance is improved, but the ease of operation decreases due to complex implementation methods
Solution Approach 1:
The patent establishes clear operational parameters by specifying the molecular weight range (100-500 g/mol) and chemical structure type (carboxyanhydrides) of the organic compound to be added. This provides operators with straightforward selection criteria and simplifies the implementation process, directly improving ease of operation while maintaining performance enhancement benefits
Solution Approach 2:
The patent employs simple, readily available carboxyanhydride compounds that can be easily introduced into the catalyst formulation process. These compounds serve their function of enhancing catalyst activity and are then eliminated or decomposed during the Fischer-Tropsch reaction conditions, leaving no complex residues. This approach simplifies operational procedures while achieving the desired performance improvement
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 catalytic performance with increased activity and selectivity, resulting in a greater number of active sites, even after partial elimination of the carboxyanhydride compound, leading to more efficient Fischer-Tropsch synthesis.
Implementation Method 1
The catalyst exhibits improved catalytic performance with increased activity and selectivity, resulting in a greater number of active sites
Implementation Method 2
contacting the support with cobalt and nickel precursors and an organic compound of the carboxyanhydride family, which enhances the catalyst's activity and selectivity through increased cobalt dispersion
Data Source
AI summary
The present invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support containing a mixed oxide phase containing cobalt and/or nickel, said catalyst has been prepared by introducing at least one organic compound of the family of carboxyanhydrides. The invention also relates to the process for the preparation thereof, and to the use thereof in the field of Fischer-Tropsch synthesis processes.