Furfural Derivative Recovery via Partial Neutralization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing processes for producing furfural derivatives like HMF, AlkMF, and AcMF suffer from degradation reactions due to neutralization to alkaline pH values, leading to reduced yields and the need for excessive neutralizing agents.
Innovation Solution
A process involving reacting a fructose- or glucose-containing starting material with a liquid hydroxyl group-containing compound in the presence of an acid catalyst at 150-300°C, followed by neutralizing the acid reaction mixture to a pH of 3-6.5, and purifying the partially neutralized mixture to obtain the furfural derivative, thereby avoiding degradation and reducing the amount of neutralizing agents required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the reaction mixture is neutralized to alkaline pH values (7-9), then the yield of furfural derivatives is improved, but degradation reactions occur leading to reduced product quality
Solution Approach 1:
The patent changes the pH parameter from alkaline (7-9) to mildly acidic (3-6.5), resolving the contradiction by finding an optimal intermediate value that prevents degradation while maintaining acceptable yield through controlled acidity that avoids both degradation and excessive neutralization
2Reliability
If the reaction mixture is neutralized to pH 7-9, then degradation reactions are prevented, but excessive amounts of neutralizing agents are required
Solution Approach 1:
The patent applies partial neutralization rather than complete neutralization, adjusting pH only to 3-6.5 instead of 7-9. This partial action is sufficient to prevent degradation while avoiding the excessive use of neutralizing agents that would be required for full neutralization to alkaline pH
3Ease of operation
If complete neutralization to pH 7-9 is performed, then product recovery is facilitated, but the process complexity and cost increase
Solution Approach 1:
The patent changes the target pH parameter from 7-9 to 3-6.5, simplifying the process by requiring less intensive neutralization while still enabling effective product recovery. This parameter change reduces process complexity and cost while maintaining operational effectiveness
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 prevents degradation of furfural derivatives during recovery, reduces the need for neutralizing compounds, and lowers costs and effort, while maintaining high product yields.
Implementation Method 1
reacting a fructose- and/or glucose-containing starting material with a liquid hydroxyl group-containing compound in the presence of an acid catalyst at a reaction temperature in the range of 150 to 300 °C to produce an acid reaction mixture comprising the furfural derivative
Implementation Method 2
neutralizing the pH of the acid reaction mixture to a pH-value in the range of 3 to 6.5 to provide a partially neutralized reaction mixture
Data Source
AI summary
A furfural derivative having the chemical formula (1) wherein R represents hydrogen, an alkyl group or an acyl group, is prepared in a process, which process comprises reacting a fructose- and/or glucose-containing starting material with a liquid hydroxylgroup- containing compound of formula R-OH in the presence of an acid catalyst at a reaction temperature in the range of 150 to 300 ⁰C to produce an acid reaction mixture comprising the furfural derivative of chemical formula (1), which acid reaction mixture has a pH-value of smaller than 3; neutralizing the acid reaction mixture to a pH-value in the range of 3 to 6.5 to provide a partially neutralized reaction mixture; and purifying the partially neutralized reaction mixture to recover the furfural derivative of chemical formula (1).