Ernst Jantzen

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Hans Georg Ernst Jantzen (born March 11, 1895 in Eisenach ; † November 19, 1977 ) was a German chemist and university professor who dealt in particular with issues of applied chemistry and is considered the founder of technical chemistry at the University of Hamburg .

Life

Studies, doctorate and habilitation

After graduating from high school in World War I, Jantzen served in the German Army between 1914 and 1918 . After the end of the war, he began studying chemistry at the newly founded University of Hamburg . In 1921 he will be there as an academic student of Paul Raven with a dissertation on the subject over the preparation of Lepidins and the synthesis of 3-acetyl-4-methyl-pyridine and β-Collidins Dr. rer. nat. PhD .

He then became a scientific assistant at the Hamburg State Institute of Chemistry, which was shaped by Paul Rabe, Heinrich Remy and Hans Heinrich Schlubach , where he became head of a department for technical chemistry in the Institute for Inorganic Chemistry in 1928 as a private lecturer and thus the founder of technical chemistry at the University of Hamburg applied. In the following years he developed a separation method known as countercurrent distribution (fractionated distribution).

In 1932 he completed his habilitation at the University of Hamburg with a habilitation thesis on the subject of fractional distilling and fractional distribution as methods for separating mixtures of substances .

In 1933 he developed a device for cutting foam , for which a patent application was filed not only with the Reich Patent Office, but also with the British Patent Office and the US Patent Office . In 1934 he became an adjunct professor at the University of Hamburg. In 1938 he also became a research assistant at the Hamburg State Chemical Institute.

Second World War, post-war period and retirement

During the Second World War , Jantzen was called back to military service in the German Wehrmacht between 1940 and 1945 and was last promoted to lieutenant colonel in 1942 . In 1940 the call for a professorship at the Technical University of Darmstadt was rejected.

After the end of the war, Jantzen returned to his unscheduled professorship at the university and taught there until his retirement in 1963. At the same time, between 1945 and 1963 he was again employed as a research assistant at the Hamburg State Chemical Institute. In addition to his teaching activities, he dealt in particular with fatty acids and wrote numerous articles in specialist journals .

After his retirement and the relocation of the State Institute of Chemistry to Martin-Luther-King Platz, his lectureship for technical chemistry became an independent department for applied chemistry, which was organizationally attached to the Institute for Inorganic Chemistry. In 1965, Hansjörg Sinn was appointed full professor.

Publications

  • On the preparation of lepidine and on the synthesis of 3-acetyl-4-methyl-pyridine and β-collidine , dissertation, University of Hamburg, 1921
  • Fractional distillation and fractional distribution as methods for separating mixtures of substances , Habilitation, University of Hamburg, 1932

Web links

Individual evidence

  1. ^ The development lines of technical and macromolecular chemistry in Hamburg (homepage of the University of Hamburg).
  2. ^ The development lines of organic chemistry in Hamburg (homepage of the University of Hamburg).
  3. ^ The development lines of technical and macromolecular chemistry in Hamburg (homepage of the University of Hamburg).
personal data
SURNAME Jantzen, Ernst
ALTERNATIVE NAMES Jantzen, Hans Georg Ernst (full name)
BRIEF DESCRIPTION German chemist and university professor
DATE OF BIRTH March 11, 1895
PLACE OF BIRTH Eisenach
DATE OF DEATH 19th November 1977