Louis Munroe Dennis
Louis Munroe Dennis (born May 26, 1863 in Chicago , Illinois , † December 9, 1936 in Ithaca , New York ) was an American chemist ( inorganic chemistry ).
Life
Dennis studied chemistry from 1881 at the University of Michigan in Ann Arbor with a bachelor's degree in 1885 (B. Ph.) And 1886 (B. Sc.). From 1887 he taught at Cornell University . From 1889 to 1891 he was on a study trip to Munich , Dresden (with Walther Hempel , specialist in gas analysis and student of Robert Wilhelm Bunsen ), Aachen and Wiesbaden , was then Assistant Professor , 1893 Associate Professor and from 1903 Professor of Inorganic Chemistry and Head from the chemistry department at Cornell University. In 1933 he retired.
Despite his high reputation, he was rarely at congresses because he had hearing problems after a laboratory accident. He was very results-oriented and demanding towards students and employees (his favorite saying was Do it now! ) And his standards for work that he thought were worthy of publication were also high.
plant
He was one of the first American chemists who dealt with gas and spectral analysis (from around 1910, before that mainly with metallurgy) and wrote the book Gas Analysis with Nichols (Macmillan 1913) about it . He developed a process for the sulfonation of benzene (from 1917 in industrial use by the US War Department), which lowered the costs of phenol synthesis, and dealt with the chemistry of rare earths : he isolated thorium from rare earths in 1894 and dealt with Chemistry of germanium (1925 synthesis of germanium hydride), but also gallium, indium, selenium, tellurium. He was considered a leading expert not only in inorganic chemistry in the USA, but also in laboratory equipment for universities, and he most recently gave the introductory experimental chemistry lectures in Cornell.
Honors
He received honorary degrees from Colgate University (1923) and the University of Michigan (1926). In 1932 he was elected a member of the German Academy of Sciences Leopoldina .
Fonts
- Chemical problems in inorganic chemistry, 1890
- Problems in inorganic chemistry, Ithaca 1923
- The electrolysis of solutions of rare earths, New York 1915
- with Frank W. Clarke: Laboratory manual of elementary chemistry, 1903
- with Frank W. Clarke: Elementary Chemistry, American Book Company 1903
- with ML Nichols: Gas Analysis, 1913, 1929
- with Theodore Whittesley: Manual of quantitative analysis, 1902
- The Baker Laboratory of Chemistry at Cornell University, 1928
He also translated Walther Hempel's methods of gas analysis into English and published them in 1902.
literature
- Winfried Pötsch u. a. Lexicon of important chemists , Harri Deutsch 1989
- A. Browne: AMERICAN CONTEMPORARIES - Louis Munroe Dennis. In: Industrial & Engineering Chemistry. 22, 1930, pp. 1257-1258, doi : 10.1021 / ie50251a045 .
Web links
Individual evidence
- ↑ Life data, publications and academic family tree of Louis Munroe Dennis at academictree.org, accessed on January 1, 2018.
- ↑ Archives
- ↑ Member entry of Louis Dennis at the German Academy of Sciences Leopoldina , accessed on November 26, 2015.
| personal data | |
|---|---|
| SURNAME | Dennis, Louis Munroe |
| BRIEF DESCRIPTION | American chemist |
| DATE OF BIRTH | May 26, 1863 |
| PLACE OF BIRTH | Chicago , Illinois |
| DATE OF DEATH | December 9, 1936 |
| Place of death | Ithaca , New York |