Composite Material Production with Excess Oxidant for Purity
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Solution Overview
Problem
Existing methods for producing composite materials often require an excess of reductant to ensure complete conversion of metal compounds to product metal, leading to the inclusion of reduced metal compounds and inefficiencies in the process.
Innovation Solution
A method where the metal compound is fed to the reactor in excess relative to the reductant, allowing for the production of a composite material with the product metal dispersed in a matrix of oxidized reductant, and the recovery of finely divided particulate composite material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an excess of reductant is used to ensure complete conversion of metal compound to product metal, then the conversion completeness is improved, but the presence of unreacted reductant and reduced metal compounds in the product increases
Solution Approach 1:
The patent inverts the conventional approach by using excess oxidant instead of excess reductant. This reversal ensures complete conversion of metal compound to product metal while preventing the accumulation of unreacted reductant and reduced metal compounds in the final product, thereby simultaneously achieving high conversion completeness and product purity.
2Productivity
If an excess of reductant is used to ensure complete conversion, then the reduction efficiency is improved, but the process complexity and material recovery difficulty increase
Solution Approach 1:
By inverting the conventional approach and using excess oxidant instead of excess reductant, the patent simplifies the process. The excess oxidant can be easily removed through filtration or decantation, eliminating the need for complex separation processes to remove unreacted reductant and reduced metal compounds, thus maintaining high reduction efficiency while reducing process complexity.
3Reliability
If conventional methods with excess reductant are used, then complete conversion of metal compound is achieved, but the particle size of product metal becomes large
Solution Approach 1:
The patent uses excess oxidant instead of excess reductant, which prevents the formation of large aggregates of unreacted reductant that would otherwise incorporate product metal particles. This results in complete conversion of metal compound while maintaining the product metal in a finely divided form with small particle size, suitable for catalyst support applications.
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 results in a composite material with reduced metal compounds in various oxidation states, maintaining a finely divided particulate form and minimizing the presence of unreacted reductant, thereby enhancing the purity and reactivity of the product metal.
Implementation Method 1
a method for the production of a composite material via reduction-oxidation reaction with excess oxidant
Data Source
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AI summary
There is provided a method of producing a composite material comprising: supplying a metal compound (MPC) of a product metal (MP) and a reductant (R) capable of reducing the metal compound (MPC) of the product metal (MP) to a reactor; forming a composite material comprising a matrix of oxidised reductant (Ro) of the reductant (R), the product metal (MP) dispersed in the matrix of oxidised reductant (Ro), and at least one of (i) one or more metal compounds (MPCR) of the metal compound (MPC) in one or more oxidation states and (ii) the reductant (R); and recovering the composite material from the reactor, wherein the metal compound (MPC) of the product metal (MP) is fed to the reactor such that it is in excess relative to the reductant (R).