Bio-sourced Etheramine Synthesis for Silicate Flotation
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Solution Overview
Problem
Current etheramine production methods do not utilize bio-sourced or biodegradable reagents, and existing etheramines are not effective for the selective removal of silicates during ore flotation, which is environmentally concerning.
Innovation Solution
A process involving the reaction of 2-octanol, a bio-sourced and biodegradable compound, with acrylonitrile in the presence of a basic catalyst, followed by hydrogenation, to produce etheramines with improved ecotoxicological profiles and enhanced selectivity in silicate removal during ore flotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional etheramines are used for ore flotation, then flotation process can be carried out, but selectivity in silicate removal is insufficient and ecotoxicological profile is poor
Solution Approach 1:
The patent modifies the molecular structure of etheramines by changing parameters such as the hydrocarbon chain length (C12-C24), the number of ether oxygens (2-6), and the amine functionality to optimize both flotation selectivity and environmental profile. This involves systematic variation of structural parameters to achieve superior performance compared to conventional etheramines.
Solution Approach 2:
The invention creates composite etheramine molecules combining specific hydrocarbon chains with ether and amine functional groups in defined configurations. These composite molecular structures exhibit enhanced selectivity for silicate minerals while maintaining improved biodegradability and reduced ecotoxicity compared to simpler conventional etheramine structures.
2Productivity
If conventional etheramines are synthesized using traditional methods, then production can be achieved, but environmental sustainability is compromised due to non-biodegradable reagents
Solution Approach 1:
The synthesis process uses bio-sourced alcohols with specific carbon chain lengths (C12-C24) as starting materials, changing the原料 parameters to be environmentally sustainable. The reaction conditions including catalyst selection (basic catalysts like KOH or NaOH), temperature ranges (50-150°C), and pressure conditions are optimized to maintain high productivity while using renewable feedstocks.
Solution Approach 2:
The patent employs readily available basic catalysts (potassium hydroxide, sodium hydroxide) and standard hydrogenation catalysts (Raney nickel, Raney cobalt) that can be easily obtained and disposed of, replacing complex or expensive catalytic systems. This approach maintains economic viability while improving environmental sustainability through the use of bio-sourced starting materials.
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 produced etheramines demonstrate improved selectivity in silicate removal and better ecotoxicological profiles, outperforming commercial products in flotation efficiency and environmental sustainability.
Implementation Method 1
reacting an alcohol with a nitrile compound, usually acrylonitrile, in the presence of a basic catalyst
Implementation Method 2
A hydrogenation step of the resulting product is then carried out to isolate the target etheramine
Data Source
AI summary
The present invention relates to a compound of formula (I): in which: - the R1 and R2 groups, which may be identical or different, are, independently of one another, a saturated or unsaturated, linear, branched or cyclic hydrocarbon group comprising from 1 to 15 carbon atoms, preferably from 1 to 10 carbon atoms; - the R3 and R4 groups, which may be identical or different, are chosen, independently of one another, from a hydrogen atom, the methyl group and the ethyl group; - the R, R6 and R7 groups, which may be identical or different, are chosen, independently of one another, from a hydrogen atom and an alkyl group comprising from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms, more preferably from 1 to 3 carbon atoms; - n is an integer of 0 to 20; and - m is an integer of 1 to 6.