A method for purification of crude glycerol, especially crude glycerol derived from biodiesel production using alkaline catalysts. The method comprises combining the crude glycerol with acid, separating a glycerol layer, and treating the glycerol layer to decolorize it.
A method for producing MnB12H12, wherein M is a metal or ammonium cation and n is one or two, by combining a metal borohydride and XBH3; wherein X is a substituted amine; a substituted phosphine; or tetrahydrofuran.
A method for purification of crude glycerol, especially crude glycerol derived from biodiesel production using alkaline catalysts. The method comprises combining the crude glycerol with acid, separating a glycerol layer, and treating the glycerol layer to decolorize it.
A method for esterification of free fatty acids with methanol. The method has steps of: (a) contacting a heterogeneous esterification catalyst in a reactor with a reaction mixture containing: (i) methanol and (ii) a triglyceride mixture containing 70-99.8 wt % triglycerides and 0.2-30 wt % free fatt ...
A continuous process for esterification of fatty acids in glyceryl esters with C1-C8 aliphatic alcohols in a tubular reactor. The method uses an expanded resin catalyst bed in the tubular reactor.
A method for purification of crude triglycerides to be used as a raw material for production of biodiesel fuel. Crude triglycerides are contacted with a variety of adsorbents and ion exchange resins to reduce the levels of impurities.
A method for producing MnB12H12, wherein M is a metal or ammonium cation and n is one or two, by combining a metal borohydride and XBH3; wherein X is a substituted amine; a substituted phosphine; or tetrahydrofuran.
A method for transesterification of triglycerides, especially those containing free fatty acids, with methanol. The method uses a catalyst derived from an acidic ion exchange resin. The catalyst is contacted with a reaction mixture containing a triglyceride and methanol under conditions suitable for ...
A method for marking a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel, by adding an organic marker compound.
A method for marking a liquid petroleum hydrocarbon. The method comprises adding to the liquid petroleum hydrocarbon a pyrazinoporphyrazine dye having an absorption maximum from 700 nm to 900 nm.