3 results about "Sec-Butylamine" patented technology

The invention belongs to the technical field of wet metallurgy extraction agents, and particularly relates to an amide extraction agent and a preparation method and application thereof. The preparation method of the amide extracting agent comprises the following steps: (1) putting n-butyl bromide and sec-butylamine into a reactor, reacting in a homogeneous reactor for 6-10 hours, washing with a saturated sodium bicarbonate solution after the reaction is finished, then separating liquid, and carrying out rotary evaporation on an organic phase to obtain N-butyl sec-butylamine; (2) dissolving N-butyl sec-butylamine in an organic solvent, dropwise adding diglycyl chloride into the solvent at-20 to 0 DEG C, reacting at room temperature for 1-5 hours after dropwise adding, filtering to remove precipitate, washing an organic phase with hydrochloric acid and secondary water in sequence, removing water with anhydrous sodium sulfate, performing rotary evaporation on the organic phase, and performing vacuum drying on a product to obtain the N, N '-di-n-butyl-N, N'-diglycyl chloride. The catalyst is N, N '-di-sec-butyl-3-oxoglutaramide.

This invention discloses a method for identifying tamarind maturity based on aroma markers. Through systematic research, this invention, for the first time, discovers the correlation between eight characteristic aroma markers and tamarind maturity: for unripe tamarind, phenylacetaldehyde, sec-butylamine, 5-acetoxymethyl-2-furfural, and tea spiroane; for ripe tamarind, 5-hydroxymethylfurfural, octanal, p-cymene, and styrene. This method is simple to operate, has an accuracy rate of ≥98%, and is suitable for tamarind harvesting and grading, quality evaluation, and processing quality control.

The application provides a composite material for reducing 3-chloropropanol ester and glycidyl ester in glyceride edible oil, a preparation method and application, and belongs to the technical field of edible oil processing. The preparation method of the composite material comprises the following steps: S1, mixing graphene oxide, sodium dodecyl sulfate, sec-butylamine and an alkaline aqueous solution to obtain a precursor solution; S2, adjusting the temperature of the precursor solution obtained in step S1 to 60-80 DEG C, adding a silicon source and a metal salt solution dropwise, maintaining the reaction at 60-80 DEG C, and post-treating to obtain the composite material. The composite material can effectively reduce the content of 3-chloropropanol ester and glycidyl ester in glyceride edible oil when the glyceride oil is treated, and has good recyclability.