Amorphous Magnesium Silicate Adsorbent for Low-Dosage Catalyst Removal
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Solution Overview
Problem
Conventional adsorbents require large amounts to adsorb alkali metal-containing basic catalysts, leading to reduced yield and increased waste, necessitating an adsorbent with higher adsorption capacity and reduced usage.
Innovation Solution
An amorphous magnesium silicate compound with low alkali metal content and high solid acid value, characterized by specific chemical formula and properties, is used to enhance adsorption capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adsorbents are used to adsorb alkali metal-containing basic catalysts, then impurity removal is achieved, but large amounts of adsorbent are required leading to reduced yield and increased waste
Solution Approach 1:
The patent applies parameter changes by precisely controlling the chemical composition parameters of the magnesium silicate adsorbent. Specifically, it controls the SiO2/MgO molar ratio within 2.0-4.0, alkali metal content at 1.20 mass% or lower, and solid acid amount at 0.70 mmol/g or more. These parameter optimizations enable the adsorbent to achieve high adsorption capacity with reduced dosage, thereby reducing polyether polyol loss and waste generation while maintaining effective impurity removal
Solution Approach 2:
The patent employs composite materials by creating a magnesium silicate compound with specific composite structure characterized by controlled SiO2 and MgO ratios. This composite material structure, combined with controlled porosity and surface properties, provides enhanced adsorption performance that allows effective catalyst removal with smaller adsorbent amounts, thus reducing both yield loss and waste
2Reliability
If large amounts of adsorbent are used to ensure adequate adsorption capacity, then impurity removal is improved, but production cost increases and waste increases
Solution Approach 1:
The patent optimizes adsorption performance by changing key parameters of the magnesium silicate adsorbent: controlling SiO2/MgO molar ratio (2.0-4.0), alkali metal content (≤1.20 mass%), solid acid amount (≥0.70 mmol/g), and BET specific surface area (100-500 m²/g). These parameter changes enable high adsorption capacity per unit mass, reducing the quantity of adsorbent needed while maintaining effective impurity removal
Solution Approach 2:
The patent utilizes porous materials by controlling the total pore volume (0.30-0.60 cm³/g) and creating an optimized pore structure in the magnesium silicate adsorbent. This porous structure increases the internal surface area available for adsorption, enabling high adsorption capacity with reduced adsorbent dosage, thus decreasing both adsorbent consumption and waste generation
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 novel adsorbent achieves high adsorption capacity for metal ions like K+, Na+, and Ni+ with significantly reduced adsorbent amounts, contributing to yield improvement and waste reduction.
Implementation Method 1
the adsorption capacity of an adsorbent for metal ions such as K+
Data Source
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AI summary
The present invention addresses the problem of providing a novel adsorbent that has a high adsorption capacity and that is capable of adsorbing a substance to be adsorbed with a small amount of use. The present disclosure provides an adsorbent composed of an amorphous magnesium silicate compound. The magnesium silicate compound according to the present disclosure has an alkali metal content of 1.20 mass% or less. The magnesium silicate compound according to the present disclosure has a solid acid content of 0.70 mmol/g or more.