Who is dobereiner

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Username Please enter your Username. Password Please enter your Password. Forgot password? Don't have an account? Sign in via your Institution. You could not be signed in, please check and try again. Now the intellectual fame of Saxe-Weimar had spread rapidly around Europe and attracted a flow of visitors, eager to partake in so much that was new and progressive.

They came from all over the continent and among them was the Grand Duchess Maria Pavlovna from Russia. The latter, who reached the Imperial rank at the end of , desired to develop the natural resources of Russia, and his principal agent in this activity was his very able Minister of Finance, Count Egor Kankrin. Kankrin, in his ex officio capacity of Head of the Mining Department, interested himself very deeply in the discoveries of platinum deposits made in the Urals from onwards. This material was already in demand in Western Europe for both decorative and scientific purposes but, as the basis for neither of these was available in Russia, Kankrin, after consulting that great international authority Alexander von Humboldt, had decided to use it for coinage.

To refine the native material for this purpose, he had commissioned the well-known Russian chemist Sobolevsky to make the necessary arrangements and this had been done in the Government Mining Laboratory at St Petersburg. But neither Kankrin nor Sobolevsky was completely satisfied with the chemical methods with which they had started their operations and they were continually searching for advice for improvement.

As early in his career as he had interested himself in refining some South American native platinum in order to provide himself with his own platinum apparatus and she had obtained for him some further supplies from Russia to help his work. Also, as chemical advisor to the Minister of State, he had to inspect the work of breweries and distilleries and this led him to a long research on the oxidation of alcohol and the possibility of making vinegar from it by direct chemical means.

In the course of all this work, he came upon the experiment of Edmund Davy in on the power of chemically-reduced platinum black to promote the oxidation of alcohol. He repeated this in and found that not only did it oxidise the alcohol entirely to acetic acid alone without other less desirable products , but at the end the platinum black remained unchanged and available for more work. It therefore promised well for the direct production of vinegar from alcohol. This gave other scientists a clue that relative atomic masses were important when arranging the elements.

Cooke found that these types of chemical relationships extended beyond the triad. Connect with us Contact us today.