File:Reduction of unsaturated compounds, fatty acids and their glycerides (1916) (14771618602).jpg

Identifier: reductionofunsat00wris (find matches)
Title: Reduction of unsaturated compounds, fatty acids and their glycerides
Year: 1916 (1910s)
Authors: Wrisley, George Alfred
Subjects: Reduction (Chemistry) Compounds, Unsaturated Fatty acids Glycerides Theses
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Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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ed was mere quickly reached byusing all three ceils combined, and maintained with the aid ofresistance or by alternately switching on and off one or more ofthe coils. 3. Preparation of the Catalyzer. Twenty grams of metallic nickel were almost completelydissolved in 500 cc of dilute KNO3(1:3HgO). This solution waspoured off, leaving behind some undissolved nickel, into a por-celain dish which contained some powdered amorphous silica andthe mixture thoroughly stirred. It was allowed to evaporate,with frequent stirring, to almost a claylike, solid consistency.This was then crushed to small pieces, and heated in a nickelcrucible. At first the mixture became almost liquid, due towater of crystallization, then sticky and finally crusty again.Then the red fumes of nitric oxide began to come off. With stir-ring and continued heating the rather course lumps turned froma green color to a brown to a greyish black, and after 3one timethe fumes ceased to come off and I concluded that 1 had nickel
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3 1 oxide mixed intimately with the silica as a carrier.Experiment 1. The apparatus was set up as described in the figure onthe opposite page, Figure l,sc that the hydrogen from the Kippgenerator passes first through a concentrated solution of potas-sium permanganate, then through concentrated sulphuric acid thenthrough a distilling bulb containing 50 grams of benzene (boilingpoint 80-32°). The latter was placed over an electric heater.The combustion tube containing the catalytic material is placedin the electric furnace and the lower end connected to the neckof a 200 cc distilling bulb surrounded with ice water. The sidetube of this bottle is connected to a tube dipping into 25 cc ofalcohol contained in a second distilling bulb, which is alsosurrounded with ice water. The alcohol is to retain vapors ofcyclohexane which escape condensation in the first bulb. After starting the passage of hydrogen through the systemit was tested for leaks by closing the stop-cock at the end ofthe appareductionofunsat00wris

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