Gerhard Lagaly | |
|---|---|
 Lagaly in 2003 | |
| Born | 14 October 1938 |
| Citizenship | German |
| Alma mater | Heidelberg University, Munich University |
| Known for | Alkylammonium Method for layer charge determination |
| Awards | AIPEA Medal (2001) Bailey Award (2002) Wolfgang Ostwald Prize (2004) |
| Scientific career | |
| Fields | Clay and Colloid Chemistry |
| Institutions | University of Kiel |
| Doctoral advisor | Armin Weiss |
Gerhard Lagaly (born 14 October 1938, in Ludwigshafen am Rhein) is a German chemist and retired university professor.
In 1957, Lagaly started his chemistry studies (as well as Physics, Mineralogy and Botany) at the Heidelberg University, receiving his degree as "Diplom-Chemiker" in 1962. He conducted his doctorate studies at the Institute for Inorganic Chemistry at the same institution under Armin Weiss, and was awarded his Doctor degree in 1967 with the work "Untersuchung von Quellungsvorgängen in n-Alkylammonium-Schichtsilicaten". From 1965 he worked as an Assistant at the Institute for Inorganic Chemistry of the Munich University where he concluded his Habilitation in 1971 and then was employed as lecturer ("Akademischer Rat/Oberrat"). In 1974 he was employed as Professor for Inorganic Chemistry at the University of Kiel, retiring in 2004.
His research lines concentrated on Clay chemistry, Colloid chemistry and Interface chemistry as well as chemistry from porous compounds, layered materials and intercalation chemistry.
Among his many contributions to the fields of clay and colloid chemistry, one of his most recognized developments was the Alkylammonium Method for the determination of layer charge in layered aluminosilicates. [1]
He acted as treasurer of the German Colloid Society from 1979 to 2003. [2] In 2004 the same institution awarded him with the Wolfgang Ostwald Prize. [3] Lagaly was President of the German Clay Group (DTTG) from 1987 to 1992 and of the European Clay Groups Association (ECGA) from 1999 to 2003.
In addition, Lagaly acted for many years (1987-2004) as editor-in-chief for "Colloid and Polymer Science" [4] and "Progress Colloid and Polymer Science" [5] as well as editor for "Clay Minerals" [6] (1982-1996) and "Applied Clay Science" [7] (1985-1996).
The German Clay Group (DTTG) [15] awards the Gerhard Lagaly Award, to "internationally excellent scientists with outstanding original research in the field of clay mineralogy." The award is designated after the internationally highly recognized clay scientist and the distinguished member of the DTTG, Professor Dr. Dr. Gerhard Lagaly. [16]
The prize was first awarded in 2014 to Prof. Dr. Juraj Bujdák (Comenius University Bratislava). In 2016, the prize went to Dr. habil. Sabine Petit (Université de Poitiers). The recipient of the 2018 prize was Dr. Stephan Kaufhold (BGR Hannover). [17]
In March 2017 an hydrated calcium phyllomanganate with formula Ca2xMn1−xO2•1.5-2H2O (x = 0.05–0.08) was accepted as new mineral by the International Mineralogical Association. This new species was discovered and described by Dr. Thomas Witzke and colleagues. It was named Lagalyite, in honor of Gerhad Lagaly and his contributions to the fields of clay chemistry and mineralogy. [18] [19]
Friedrich Wilhelm Ostwald was a Baltic German chemist and philosopher. Ostwald is credited with being one of the founders of the field of physical chemistry, with Jacobus Henricus van 't Hoff, Walther Nernst, and Svante Arrhenius. He received the Nobel Prize in Chemistry in 1909 for his scientific contributions to the fields of catalysis, chemical equilibria and reaction velocities.
Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolinite, Al2Si2O5(OH)4). Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impurities, such as a reddish or brownish colour from small amounts of iron oxide.
An ultramicroscope is a microscope with a system that lights the object in a way that allows viewing of tiny particles via light scattering, and not light reflection or absorption. When the diameter of a particle is below or near the wavelength of visible light, the particle cannot be seen in a light microscope with the usual methods of illumination. The ultra- in ultramicroscope refers to the ability to see objects whose diameter is shorter than the wavelength of visible light, on the model of the ultra- in ultraviolet.
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Polymer chemistry is a sub-discipline of chemistry that focuses on the structures of chemicals, chemical synthesis, and chemical and physical properties of polymers and macromolecules. The principles and methods used within polymer chemistry are also applicable through a wide range of other chemistry sub-disciplines like organic chemistry, analytical chemistry, and physical chemistry. Many materials have polymeric structures, from fully inorganic metals and ceramics to DNA and other biological molecules. However, polymer chemistry is typically related to synthetic and organic compositions. Synthetic polymers are ubiquitous in commercial materials and products in everyday use, such as plastics, and rubbers, and are major components of composite materials. Polymer chemistry can also be included in the broader fields of polymer science or even nanotechnology, both of which can be described as encompassing polymer physics and polymer engineering.
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The Max Planck Institute of Colloids and Interfaces is located in Potsdam-Golm Science Park in Golm, Potsdam, Germany. It was founded in 1990 as a successor of the Institute for Physical Chemistry and for Organic Chemistry, both in Berlin-Adlershof, and for Polymer Chemistry in Teltow. In 1999, it transferred to newly constructed extension facilities in Golm. It is one of 80 institutes in the Max Planck Society (Max-Planck-Gesellschaft).
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Organoclay is an organically modified phyllosilicate, derived from a naturally occurring clay mineral. By exchanging the original interlayer cations for organocations an organophilic surface is generated, consisting of covalently linked organic moieties. The lamellar structure remains analogous to the parent phyllosilicate.
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Clay chemistry is an applied subdiscipline of chemistry which studies the chemical structures, properties and reactions of or involving clays and clay minerals. It is a multidisciplinary field, involving concepts and knowledge from inorganic and structural chemistry, physical chemistry, materials chemistry, analytical chemistry, organic chemistry, mineralogy, geology and others.
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