Silanol Compound Production via Anhydrous Solid Catalysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Silanol compounds are difficult to synthesize with good yield due to simultaneous condensation during hydrolysis, leading to low stability and unsuitability as starting materials for siloxane compounds, and existing methods using homogeneous catalysts are inefficient for industrial production.
Innovation Solution
A composition comprising 5-100% silanol compound represented by Formula (D) with amine or amide compounds and ammonium salts, under anhydrous conditions, using a solid catalyst like Pd and Pt, to stabilize and enhance the yield of silanol compounds for use in siloxane synthesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If silanol compounds are synthesized via hydrolysis of chlorosilane or alkoxysilane, then siloxane compounds can be produced, but condensation occurs simultaneously leading to low yield and poor stability
Solution Approach 1:
The patent extracts and removes water from the reaction system by conducting the hydrolysis reaction under anhydrous conditions. This eliminates the harmful factor (water) that causes simultaneous condensation, thereby improving both the yield and stability of the silanol compound without requiring additional stabilization steps.
Solution Approach 2:
The patent changes the physical-chemical parameters of the reaction environment by maintaining anhydrous conditions throughout the hydrolysis process. By controlling the water content parameter to be essentially zero, the reaction selectively proceeds to form silanol compounds without competing condensation reactions, thus resolving the contradiction between yield and stability.
2Ease of manufacture
If homogeneous catalysts are used for siloxane bond formation, then reaction can proceed, but catalyst removal becomes difficult and product purity decreases
Solution Approach 1:
The patent introduces a solid catalyst as an intermediary substance that facilitates the siloxane bond formation reaction without dissolving in the reaction mixture. This solid catalyst can be easily separated from the organic phase through simple filtration, eliminating the complex catalyst removal procedures required for homogeneous catalysts and ensuring high product purity.
Solution Approach 2:
The patent replaces the chemical mechanism of homogeneous catalysis with a solid-phase catalytic mechanism. This substitution allows for mechanical separation (filtration) instead of complex chemical or physical separation procedures, thereby improving both ease of manufacture and manufacturing precision simultaneously.
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 composition allows for the stable production of silanol compounds, which can be effectively used as starting materials for siloxane compounds, improving yield and stability, and facilitating their application in various industries.
Implementation Method 1
using a solid catalyst like Pd and Pt
Implementation Method 2
A method for producing a silanol compound is also provided, which comprises a hydrogenation step in which a compound represented by Formula (1) is reacted with hydrogen in the presence of a solid catalyst
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The purpose of the present invention is to provide silanol compounds that can be used as raw materials of siloxane compounds and the like, and a composition of the silanol compounds, as well as to provide a production method that makes it possible to produce silanol compounds at excellent yield. A composition comprising 5 mass% to 100 mass% of a silanol compound represented by Formulas (A) to (C) can be prepared by devising to produce silanol compounds under water-free conditions, to produce silanol compounds in a solvent having the effect of suppressing the condensation of silanol compounds, and to perform other such processes, the composition being able to be used as a raw material or the like of siloxane compounds because the silanol compounds can be stably present in the resulting composition.