Jan Johannes Blanksma

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Jan Johannes Blanksma

Jan Johannes Blanksma (born January 24, 1875 in Pingium , † August 22, 1950 in Leiden ) was a Dutch chemist.

Life

Jan Johannes Blanksma was the son of Johannes Lieuwe Blaksma (born October 20, 1849 in Pingjum; † February 1, 1919 ibid.) And Tjamkje Jan Buwalda (born June 27, 1851 in Wimarsum; † April 17, 1945 in Pingjum). From 1888 to 1893 he attended high schools in Harlingen and Leeuwarden . In 1894 he moved to the University of Amsterdam , where he became a student of Hendrik Willem Bakhuis Roozeboom and Cornelis Adriaan Lobry van Troostenburg de Bruyn . In 1900 he did his doctorate in Amsterdam with the thesis Bijdrage tot de kennis der organic zwavelverbindungen (German: Contributions to the knowledge of organic sulfur compounds ) to the doctorate of chemistry and worked as an assistant at the laboratory for organic chemistry in Amsterdam.

In 1902 he moved to the laboratory in the Dutch Finance Department, where he worked under Willem Alberda van Ekenstein and completed his habilitation in 1904 as a private lecturer at the University of Amsterdam. During that time he mainly worked in the field of sugar compounds and laid the foundations for artificial honey with his work. He also worked in the field of explosives, mainly devoting himself to experiments with picric acid . Much of his research was published in the scientific journals and journals of his time. He published in the journal of the Royal Dutch Academy of Sciences, the reports of the German chemical society, the reports of the traveaux Chimiques des Pays Bas et de la Belgique and the Chemisch Weekblad.

On September 23, 1914, he was appointed to the professorship of organic and pharmaceutical chemistry at the University of Leiden , which task he took up on the same day with the introductory speech Synthesis of organic natural products (German: Synthesis of organic natural products ). Here he was elected Rector of the Alma Mater in the academy year 1931/32, for which he gave the Rector's speech on February 9, 1932, De invloed der organic Scheikunde op de Menschelijke samenleving (German: The Influence of Chemistry on Human Society ). He retired from his professorship on September 17, 1945 and died almost five years later.

Blanksma married Jacoba Reineker (born July 31, 1891 in Amsterdam; † April 22, 1971 in Heemstede) on July 18, 1922 in Amsterdam, daughter of Jacobus Reineker (born April 12, 1867 in Amsterdam) and his wife Geertruida Schutte ( * April 12, 1867 in Amsterdam). No children are known from the marriage.

literature

  • J. van Alphen: In memoriam Prof. Dr. JJ Blanksma, January 24, 1875 - August 22, 1950. In: Chemisch Weekblad. November 4, 1950, vol. 46, No. 44, pp. 793-795
  • Prof. Dr. JJ Blanksma overleden. In: Leidsch Dagblad. from August 26, 1950, p. 3 ( online )

Web links

Individual evidence

  1. ↑ biographical data, publications and Academic pedigree of Jan J. Blanksma at academictree.org, accessed on 7 January 2018th
personal data
SURNAME Blanksma, Jan Johannes
BRIEF DESCRIPTION Dutch chemist
DATE OF BIRTH January 24, 1875
PLACE OF BIRTH Pingium
DATE OF DEATH 22nd August 1950
Place of death Suffer