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Frédéric Swarts
Frédéric Jean Edmond Swarts (2 September 1866 – 6 September 1940) was a Belgian chemist who prepared the first chlorofluorocarbon, CF2Cl2 (Freon-12) as well as several other related compounds. He was a professor in the civil engineering at the University of Ghent. In addition to his work on organofluorine chemistry, he authored the textbook "Cours de Chimie Organique."Frédéric Swarts "Cours de Chimie Organique" Librairie Scientifique, A. Hermann (Paris), 1908. He was a son of Theodore Swarts (chemist, *1839 Antwerpen; †1911 Kortenberg, Belgium) and a colleague of Leo Baekeland Leo Hendrik Baekeland ( , ; November 14, 1863 – February 23, 1944) was a Belgian chemist. Educated in Belgium and Germany, he spent most of his career in the United States. He is best known for the inventions of Velox photographic paper .... References * {{DEFAULTSORT:Swarts, Frederic 20th-century Belgian inventors Belgian chemists 1866 births 1940 deaths Academic staff of Ghen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemist
A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, chemical reaction rates, and other chemical properties. In Commonwealth English, pharmacists are often called chemists. Chemists use their knowledge to learn the composition and properties of unfamiliar substances, as well as to reproduce and synthesize large quantities of useful naturally occurring substances and create new artificial substances and useful processes. Chemists may specialize in any number of Chemistry#Subdisciplines, subdisciplines of chemistry. Materials science, Materials scientists and metallurgists sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorofluorocarbon
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or partly Halogenation, halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F). They are produced as volatility (chemistry), volatile derivatives of methane, ethane, and propane. The most common example of a CFC is dichlorodifluoromethane (R-12). R-12, also commonly called Freon, is used as a refrigerant. Many CFCs have been widely used as refrigerants, propellants (in aerosol applications), gaseous fire suppression systems, and solvents. As a result of CFCs contributing to ozone depletion in the upper atmosphere, the manufacture of such compounds has been phased out under the Montreal Protocol, and they are being replaced with other products such as hydrofluorocarbons (HFCs) and hydrofluoroolefins (HFOs) including R-410A, R-134a and 2,3,3,3-Tetrafluoropropene, R-1234yf. Structure, properties and production As in simpler alkanes, carbons in CFCs bond with tetrahe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dichlorodifluoromethane
Dichlorodifluoromethane (R-12) is a colorless gas popularly known by the genericized brand name Freon (as Freon-12). It is a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. In compliance with the Montreal Protocol, its manufacture was banned in developed countries (non-article 5 countries) in 1996, and in developing countries (Article 5 countries) in 2010 out of concerns about its damaging effect on the ozone layer. Its only allowed usage is as a fire retardant in submarines and aircraft. It is soluble in many organic solvents. R-12 cylinders are colored white. Preparation It can be prepared by reacting carbon tetrachloride with hydrogen fluoride in the presence of a catalytic amount of antimony pentachloride: :CCl4 + 2HF → CCl2F2 + 2HCl This reaction can also produce trichlorofluoromethane (CCl3F), chlorotrifluoromethane (CClF3) and tetrafluoromethane (CF4). History Charles F. Kettering, vice president of General Motors Researc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Ghent
Ghent University (, abbreviated as UGent) is a Public university, public research university located in Ghent, in the East Flanders province of Belgium. Located in Flanders, Ghent University is the second largest Belgian university, consisting of 50,000 students and 9,000 staff members. The university also supports the Ghent University Library (including the famous Boekentoren) and the Ghent University Hospital, which is one of the biggest hospitals in Belgium. In addition to satellite campuses elsewhere in Flanders and a Global Campus in Songdo International Business District, Songdo, South Korea, Ghent University maintains many inter-university partnerships and programs both inside and outside of Europe. Established before the state of Belgium itself, the university was founded by the Dutch people, Dutch William I of the Netherlands, King William I in 1817, when the region was incorporated into the United Kingdom of the Netherlands after the fall of First French Empire. In that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organofluorine Chemistry
Organofluorine chemistry describes the chemistry of organofluorine compounds, organic compounds that contain a carbon–fluorine bond. Organofluorine compounds find diverse applications ranging from Lipophobicity, oil and hydrophobe, water repellents to pharmaceuticals, refrigerants, and reagents in catalysis. In addition to these applications, some organofluorine compounds are pollutants because of their contributions to ozone depletion, global warming, bioaccumulation, and toxicity. The area of organofluorine chemistry often requires special techniques associated with the handling of fluorinating agents. The carbon–fluorine bond Fluorine has several distinctive differences from all other substituents encountered in organic molecules. As a result, the physical and chemical properties of organofluorines can be distinctive in comparison to other organohalogens. # The carbon–fluorine bond is one of the strongest in organic chemistry (an average bond energy around 480 kJ/mol). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leo Baekeland
Leo Hendrik Baekeland ( , ; November 14, 1863 – February 23, 1944) was a Belgian chemist. Educated in Belgium and Germany, he spent most of his career in the United States. He is best known for the inventions of Velox photographic paper in 1893, and Bakelite in 1907. He has been called "The Father of the Plastics Industry" for his invention of Bakelite, an inexpensive, non-flammable and versatile plastic, which marked the beginning of the modern plastics industry. Early life Leo Baekeland was born in Ghent, Belgium, on November 14, 1863, the son of a Shoemaking, cobbler, Charles Baekeland, and a house maid, Rosalia Merchie. His siblings were: Elodia Maria Baekeland; Melonia Leonia Baekeland; Edmundus Baekeland; Rachel Helena Baekeland and Delphina Baekeland. He told ''The Literary Digest'': "The name is a Dutch word meaning 'Land of Beacons.'" He spent much of his early life in Ghent, Belgium. He graduated with honours from the Ghent Municipal Technical School and was aw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred Lucas (chemist)
Alfred Lucas (27 August 1867 – 9 December 1945) was an Egyptian-based English analytical chemist and archaeologist. He is best known for being part of Howard Carter's team at the excavation of Tutankhamun's tomb, analysing and conserving many of the finds, but he was also a pioneer in the wider fields of artifact preservation and forensic science. Life Early life Lucas was born in Chorlton-upon-Medlock, Manchester, England, to commercial traveller Joshua Peter Lucas and Sarah (). He studied chemistry in London at the Royal School of Mines and the Royal College of Science, before working for eight years as an assistant chemist at the Government Laboratory in London. Career in Egypt Diagnosed with tuberculosis in 1897, Lucas moved to Egypt a year later where he made a complete recovery. Serving as a chemist with the Egyptian civil service, he worked in Egypt for the rest of his career. After starting in the Salt Department, he was employed in a series of chemical laborat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgian Chemists
Belgian may refer to: * Something of, or related to, Belgium * Belgians, people from Belgium or of Belgian descent * Languages of Belgium, languages spoken in Belgium, such as Dutch, French, and German *Ancient Belgian language Ancient Belgian is a hypothetical extinct Indo-European language, spoken in Belgica (northern Gaul) in late prehistory. It is often identified with the hypothetical Nordwestblock. While it remains a matter of controversy, the linguist Mau ..., an extinct language formerly spoken in Gallia Belgica *Belgian Dutch or Flemish, a variant of Dutch *Belgian French, a variant of French *Belgian horse (other), various breeds of horse *Belgian waffle, in culinary contexts *SS Belgian, SS ''Belgian'', a cargo ship in service with F Leyland & Co Ltd from 1919 to 1934 *''The Belgian'', a 1917 American silent film See also * *Belgica (other) *Belgic (other) {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1866 Births
Events January * January 1 ** Fisk University, a historically black university, is established in Nashville, Tennessee. ** The last issue of the abolitionist magazine '' The Liberator'' is published. * January 6 – Ottoman troops clash with supporters of Maronite leader Youssef Bey Karam, at St. Doumit in Lebanon; the Ottomans are defeated. * January 12 ** The '' Royal Aeronautical Society'' is formed as ''The Aeronautical Society of Great Britain'' in London, the world's oldest such society. ** British auxiliary steamer sinks in a storm in the Bay of Biscay, on passage from the Thames to Australia, with the loss of 244 people, and only 19 survivors. * January 18 – Wesley College, Melbourne, is established. * January 26 – Volcanic eruption in the Santorini caldera begins. February * February 7 – Battle of Abtao: A Spanish naval squadron fights a combined Peruvian-Chilean fleet, at the island of Abtao, in the Chiloé Archipelago of southern Chile. * February 13 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1940 Deaths
A calendar from 1940 according to the Gregorian calendar, factoring in the dates of Easter and related holidays, cannot be used again until the year 5280. Events Below, events related to World War II have the "WWII" prefix. January *January 4 – WWII: Luftwaffe Chief and Generalfeldmarschall Hermann Göring assumes control of most war industries in Nazi Germany, Germany, in his capacity as Plenipotentiary for the Four Year Plan. *January 6 – WWII: Winter War – General Semyon Timoshenko takes command of all Soviet forces. *January 7 – WWII: Winter War: Battle of Raate Road – Outnumbered Finnish troops decisively defeat Soviet forces. *January 8 – WWII: **Winter War: Battle of Suomussalmi – Finnish forces destroy the 44th Rifle Division (Soviet Union), Soviet 44th Rifle Division. **Food rationing in the United Kingdom begins; it will remain in force until 1954. *January 9 – WWII: British submarine is sunk in the Heligoland Bight. *January 10 – WWII: Mechele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
