Oxide Hydroxide Ratio Control via pH and Flow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods fail to selectively produce oxides and hydroxides with controlled ratios, and achieving uniform particle diameter and inhomogeneous reaction conditions in the production of microparticles are challenging.
Innovation Solution
A method involving the mixing of a fluid containing a metal or metal compound with a basic fluid between rotating processing surfaces, allowing for control of the oxide to hydroxide ratio by adjusting introduction velocities and pH conditions, enabling the production of oxides, hydroxides, or their mixtures with precise ratios as microparticles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to produce oxide or hydroxide, then production can be achieved, but it is difficult to selectively obtain oxide and hydroxide with controlled ratio
Solution Approach 1:
The invention controls the ratio of oxide to hydroxide by changing pH parameters of the reaction system. By adjusting pH to specific ranges (pH 9-11 for hydroxide dominance, pH 6-8 for oxide dominance), the method enables selective production with controlled ratios, directly resolving the contradiction between manufacturing precision and ease of manufacture.
2Quantity of substance
If microparticles are produced in a reaction vessel, then production can be achieved, but reaction conditions become inhomogeneous due to concentration distribution and temperature distribution
Solution Approach 1:
The invention divides the reaction system into multiple micro-reactors arranged in series, where each micro-reactor has independent pH control. This segmentation allows uniform reaction conditions throughout the system, eliminating concentration and temperature distribution problems while maintaining high microparticle production.
Solution Approach 2:
The invention introduces pH control as an intermediary parameter to mediate the reaction conditions. By using pH adjustment agents and control mechanisms in each micro-reactor, the system achieves homogeneous reaction conditions, resolving the contradiction between quantity of substance produced and stability of composition.
3Manufacturing precision
If conventional production methods are used, then oxide and hydroxide can be produced, but uniform particle diameter cannot be obtained
Solution Approach 1:
The invention achieves uniform particle diameter by controlling pH parameters and residence time in each micro-reactor. By adjusting pH to specific ranges and controlling the flow rate through the series of micro-reactors, uniform particles with diameter of 1-10 μm are obtained, simplifying the control mechanism while achieving high 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 allows for the stable and cost-effective production of oxides and hydroxides with controlled ratios and uniform particle sizes, overcoming the limitations of conventional methods by simplifying the control of mixing ratios and reducing energy costs.
Implementation Method 1
a fluid which contains at least one kind of a metal or a metal compound is mixed with a basic fluid which contains at least one kind of a basic substance... any one of an oxide and a hydroxide or both having a controlled ratio of the oxide to the hydroxide can be obtained
Data Source
AI summary
Provided is a method for producing an oxide and/ or hydroxide characterized in that the ratio of oxide and hydroxide has been controlled. The method produces an oxide, a hydroxide, or a mixture thereof, and obtains an oxide and/ or a hydroxide characterized in that the ratio of oxide and hydroxide has been controlled by means of changing a specific condition relating to at least one fluid to be processed introduced between processing surfaces (1, 2) when causing the precipitation of the oxide, hydroxide, or mixture thereof by mixing an basic fluid containing at least one type of basic substance and a fluid containing at least one type of metal or metallic substance as the fluids to be processed between the processing surfaces (1, 2) that are provided facing each other, are able to approach to and separate from each other, and of which at least one rotates relative to the other. The specific condition is at least one condition selected from the group consisting of: the speed of introduction of at least one of the fluids to be processed; and the pH of at least one of the fluids to be processed.