Modified Sodium-Montmorillonite Purity and Microstructure
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Solution Overview
Problem
Montmorillonite's quality and microstructure need further improvement to enhance its therapeutic effects and expand its medical applications, as existing purification and modification processes do not fully address impurities and performance limitations.
Innovation Solution
A process involving acidification and sodium modification of montmorillonite with specific dispersing agents, followed by high-speed shearing and drying, to produce a modified sodium-montmorillonite with enhanced purity, thixotropic index, and therapeutic properties, suitable for medical and industrial uses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional purification and modification processes are used on montmorillonite, then some impurities are removed, but the purity and microstructure are not sufficiently improved to enhance therapeutic effects
Solution Approach 1:
The patent applies parameter changes by systematically optimizing acid concentration (0.1-10 mol/L), acid-to-montmorillonite weight ratios (1:1 to 100:1), and sodium modification agent amounts (not less than cation exchange capacity). These parameter adjustments transform the purification and modification process to achieve superior purity (>90% montmorillonite content) and controlled microstructure, directly resolving the contradiction between manufacturing precision and therapeutic reliability
Solution Approach 2:
The patent creates a composite treatment approach by combining acidification (using acids such as hydrochloric acid, nitric acid, or sulfuric acid) with sodium modification (using sodium hydroxide, sodium carbonate, or sodium bicarbonate). This composite process sequentially removes impurities through acid treatment then restores and enhances the montmorillonite structure through sodium modification, achieving both high purity and optimized microstructure for consistent therapeutic effects
2Reliability
If acidification and sodium modification are performed to improve purity and microstructure, then therapeutic effects are enhanced, but the process complexity increases
Solution Approach 1:
The patent achieves universality by selecting reagents that perform multiple functions: acids serve both as purification agents (removing impurities) and as structure modifiers (opening the montmorillonite interlayer), while sodium modification agents simultaneously neutralize the acid treatment and restore the layered structure. This multi-functionality reduces the need for separate dedicated steps for each function, simplifying the overall process while maintaining enhanced therapeutic effects
Solution Approach 2:
The patent simplifies process complexity through parameter optimization by establishing specific ranges for acid concentration (0.1-10 mol/L), weight ratios (1:1 to 100:1), and modification agent amounts (≥ cation exchange capacity). Within these optimized parameters, the process achieves consistent high-purity results without requiring excessive process steps, balancing therapeutic effect enhancement with manageable process complexity
3Adaptability or versatility
If montmorillonite is purified and modified to enhance quality, then application fields are widened, but production cost and time increase
Solution Approach 1:
The patent optimizes production efficiency through parameter changes by establishing practical ranges for acid concentration (0.1-10 mol/L), weight ratios (1:1 to 100:1), and reaction conditions. These optimized parameters enable scalable production of high-purity modified montmorillonite suitable for multiple applications including medicine, agriculture, and industry, without requiring excessively complex or time-consuming processes
Solution Approach 2:
The patent enhances adaptability across application fields by creating a versatile modified montmorillonite product through composite treatment. The acidification-sodium modification composite process produces a material with enhanced purity, controlled cation exchange capacity, and optimized microstructure that can be applied in medicine (as adsorbent and drug carrier), agriculture (as soil conditioner), and industry (as catalyst support), maximizing the value return on the production investment
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 modified sodium-montmorillonite exhibits improved purity, cation exchange capacity, and hydration swelling, leading to better therapeutic effects and wider application in medicine, digestive tract diseases, and industrial fields, with enhanced bioavailability and controlled drug release.
Implementation Method 1
mixing a montmorillonite with a purity of not less than 90% and 0.1-10 mol/L of an acid in a weight ratio of 1:1-100 for the acidification or acid treatment
Implementation Method 2
adding a dispersing agent and water, boiling the mixture to remove the acid, and washing to give a liquid dispersion of modified hydrogen-montmorillonite; controlling the solid content of the liquid dispersion of the modified hydrogen-montmorillonite obtained from 1) at 0.5-10% and adding an sodium modification agent in an amount of not less than the cation exchange capacity of the montmorillonite
Implementation Method 3
dispersing and homogenizing the aqueous solution by high-speed shearing effect in, for example, high-speed shearing machine, high-speed disperser, ball mill or high pressure homogenizer
Implementation Method 4
drying; and pulverizing
Data Source
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AI summary
Provided are a modified Na-montmorillonite and a preparation method thereof, wherein the content of Na+ in the modified sodium-montmorillonite, calculated as Na2O, is not less than 2.0%. The modified Na-montmorillonite has more reasonable microstructure, higher performance, and better quality. Also provided are a method for preparing a modified nanometered Na-montmorillonite from the modified Na-montmorillonite, and the modified nanometered Na-montmorillonite obtained by the method. Also provided are uses and a pharmaceutical composition of the modified Na-montmorillonite or modified nanometered Na-montmorillonite.