Ewald Katzschmann

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Ewald Lothar Max Katzschmann (born April 18, 1913 in Oschatz ; † June 10, 1994 in Witten ) was a German chemist.

Life

After graduating from high school in Oschatz, Ewald Katzschmann began working as a laboratory assistant in the former Märkische soap industry in Witten in 1932 . Between 1940 and 1944 he studied chemistry at the Technical University of Dresden and joined Imhausen-Chemie in 1946 as a graduate chemist - the later Chemische Werke Witten.

In 1951 he developed a process for the production of dimethyl terephthalate (DMT) by air oxidation of p-xylene . It is also called the Katzschmann process .

He also found that in a technical mixture of xylene isomers, the p-xylene is first oxidized quantitatively. Isophthalic acid and phthalic acid can also be produced by this process.

Over 32 licenses have been granted worldwide for this process and around 25% of the global demand for the polyester raw material DMT is produced according to this .

In 1964 he received the Dechema Prize for developing this process .

Katzschmann was married and had a son and a daughter.

Fonts

  • About organic catalysts. In: Reports of the German Chemical Society. Volume 77, No. 8, October 14, 1944, pp. 579-585, doi: 10.1002 / cber.19440770811
  • A process for the oxidation of alkyl aromatics. In: Chemical Engineer Technology. Volume 38, No. 1, January 1966, pp. 1–10, doi: 10.1002 / cite.330380102

literature

  • Gerhard Kreysa, Christina Hirche: 50 years of the DECHEMA Prize from the Max Buchner Research Foundation. 1951-2000. Article DECHEMA Prize 1964, DECHEMA, Frankfurt am Main 2001
  • Who is Who in the Federal Republic of Germany . 2nd edition, Volume 1, Who is Who, Verlag für Prominentenenzyklopädien AG, Zug 1992, ISBN 3-7290-0012-8 , p. 772
  • Walter Habel (founder): Who is who? The German who's who. 33rd edition, Verlag Schmidt-Römhild, Lübeck 1994, ISBN 3-7950-2015-8 , p. 661
  • Personal details. In: Chemical Engineer Technology. 66th volume, No. 8, August 1994, p. 1005, doi: 10.1002 / cite.330660802 (death notification)

Individual evidence

  1. ↑ Patent, applied for on April 12, 1951 , follow-up patent DE949564 : Process for the production of monomethyl terephthalate. Registered on April 13, 1951 , published on September 20, 1956 , applicant: Imhausen & Co. GmbH, inventor: Ewald Katzschmann. , DE969994 , DE970794 and more.
  2. ↑ patent DE886307 logged 25 April 1951
  3. ↑ Additional patent DE971420
  4. ↑ Additional patent DE971421
personal data
SURNAME Katzschmann, Ewald
ALTERNATIVE NAMES Katzschmann, Ewald Lothar Max (full name)
BRIEF DESCRIPTION German chemist
DATE OF BIRTH April 18, 1913
PLACE OF BIRTH Oschatz
DATE OF DEATH June 10, 1994
Place of death Witten