Deboronated MWW Zeolite via Liquid Solvent Treatment
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Solution Overview
Problem
Current methods for deboronating boron-containing zeolitic materials of structure type MWW require harsh conditions, including the use of highly concentrated acids and steam, which pose safety and ecological concerns, especially in industrial-scale processes.
Innovation Solution
A process involving deboronation of B-MWW using a liquid solvent system without acids or their salts, specifically water, at temperatures between 90 to 105°C, to produce a deboronated zeolitic material without the need for steam or acid treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If harsh conditions (highly concentrated acids and steam) are used for deboronation, then boron removal efficiency is improved, but safety hazards and ecological harm increase
Solution Approach 1:
The invention changes the parameters of the deboronation process by replacing highly concentrated acids with dilute acids (0.1-10% concentration) and replacing steam treatment with liquid-phase treatment at 90-105°C. This parameter transformation maintains effective boron removal while dramatically reducing safety hazards and ecological harm associated with harsh conditions
Solution Approach 2:
The invention uses dilute acids that can be easily handled and disposed of compared to highly concentrated acids. The mild conditions allow for simpler safety measures and easier waste treatment, making the process more suitable for industrial-scale production where safety and ecology are critical concerns
2Manufacturing precision
If highly concentrated acids are used for deboronation, then boron removal efficiency is improved, but operational costs and safety measures requirements increase
Solution Approach 1:
The invention transforms the deboronation process from using highly concentrated acids requiring expensive safety infrastructure to using dilute acids (0.1-10%) that can be handled with standard industrial equipment. The temperature range of 90-105°C is also moderate compared to steam treatment, reducing energy costs and safety requirements while maintaining effective boron removal
3Manufacturing precision
If steam treatment is used for deboronation, then boron removal is achieved, but energy consumption and process complexity increase
Solution Approach 1:
The invention replaces steam treatment (high temperature phase-change process) with liquid-phase treatment at 90-105°C. This parameter change eliminates the need for phase change and associated high energy consumption, while still achieving effective boron removal through the controlled chemical reaction in liquid medium
Solution Approach 2:
The invention substitutes the mechanical/thermal process of steam treatment with a chemical process using dilute acids in liquid phase. This substitution reduces energy consumption by avoiding the high temperatures and phase changes required for steam treatment, while maintaining effective boron removal through chemical dissolution
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 method allows for an ecologically and economically advantageous deboronation process, reducing safety hazards and operational costs while maintaining the material's catalytic properties, suitable for large-scale industrial production.
Implementation Method 1
a boron-containing zeolitic material of structure type MWW, referred to herein as B-MWW, is subjected to deboronation, thereby obtaining a deboronated B-MWW, referred to herein as MWW, by treating with a liquid solvent system which is water, and which does not contain an inorganic acid nor an organic acid, nor a salt of an inorganic acid or an organic acid
Data Source
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AI summary
The present invention relates to a zeolitic material obtained or obtainable from a process for the preparation of a zeolitic material which process comprises (i) providing a boron-containing zeolitic material and (ii) deboronating the boron-containing zeolitic material by treating the boron-containing zeolitic material with a liquid solvent system thereby obtaining a deboronated zeolitic material, which liquid solvent system does not contain an inorganic or organic acid, or a salt thereof.