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Carl S. Marvel
Carl Shipp "Speed" Marvel (September 11, 1894 – January 4, 1988) was an American chemist who specialized in polymer chemistry. He made important contributions to U.S. synthetic rubber program during World War II, and later worked at developing polybenzimidazoles, temperature-resistant polymers that are used in the aerospace industry, in fire-fighting equipment, and as a replacement for asbestos. He has been described as "one of the world's outstanding organic chemists" and received numerous awards, including the 1956 Priestley Medal and the 1986 National Medal of Science, presented by President Ronald Reagan. Early life and education Carl Shipp Marvel was born on September 11, 1894, in Waynesville, Illinois, U.S., to farmers John Thomas Marvel and Mary Lucy Wasson Marvel. An uncle urged him to study chemistry. Marvel attended Illinois Wesleyan University from 1911 to 1915. He graduated with an A.B. and M.S. in chemistry. On the recommendation of his advisor, Alfred W. Homber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waynesville, Illinois
Waynesville is a village in DeWitt County, Illinois, DeWitt County, Illinois, United States. The population was 381 at the 2020 census. History Waynesville is one of the oldest settlements in central Illinois. The area was first settled around 1825, by Prettyman Marvel and his wife, Rebecca (Barr) Marvel. They cleared an area of land near the present location of the village and were followed shortly thereafter by several other settlers. As a result, a small settlement sprung up about a mile south of Kickapoo Creek. In 1832, the first plats for the village were filed, and the name "Waynesville" (after the hero of the American Revolutionary War, Revolutionary War, General Anthony Wayne) was selected. Town lots were auctioned off, and the sale announced in newspapers. However, economic circumstances meant that few lots were ever built upon. Within two or three decades, the village had reached a population of about 500, a figure where it would remain almost until the present. Sadl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asbestos
Asbestos ( ) is a group of naturally occurring, Toxicity, toxic, carcinogenic and fibrous silicate minerals. There are six types, all of which are composed of long and thin fibrous Crystal habit, crystals, each fibre (particulate with length substantially greater than width) being composed of many microscopic "fibrils" that can be released into the atmosphere by Abrasion (mechanical), abrasion and other processes. Inhalation of asbestos fibres can lead to various dangerous lung conditions, including mesothelioma, asbestosis, and lung cancer. As a result of these health effects, asbestos is considered a serious Health hazard, health and safety hazard. Archaeological studies have found evidence of asbestos being used as far back as the Stone Age to strengthen ceramic pots, but large-scale mining began at the end of the 19th century when manufacturers and builders began using asbestos for its desirable physical properties. Asbestos is an excellent Thermal insulation, thermal and In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared Spectroscopy
Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) is the measurement of the interaction of infrared radiation with matter by absorption, emission, or reflection. It is used to study and identify chemical substances or functional groups in solid, liquid, or gaseous forms. It can be used to characterize new materials or identify and verify known and unknown samples. The method or technique of infrared spectroscopy is conducted with an instrument called an infrared spectrometer (or spectrophotometer) which produces an infrared spectrum. An IR spectrum can be visualized in a graph of infrared light absorbance (or transmittance) on the vertical axis vs. frequency, wavenumber or wavelength on the horizontal axis. Typical units of wavenumber used in IR spectra are reciprocal centimeters, with the symbol cm−1. Units of IR wavelength are commonly given in micrometers (formerly called "microns"), symbol μm, which are related to the wavenumber in a reciprocal way ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonium
Ammonium is a modified form of ammonia that has an extra hydrogen atom. It is a positively charged (cationic) polyatomic ion, molecular ion with the chemical formula or . It is formed by the protonation, addition of a proton (a hydrogen nucleus) to ammonia (). Ammonium is also a general name for positively charged (protonated) substituted amines and quaternary ammonium cations (), where one or more hydrogen atoms are replaced by Organic compound, organic or other groups (indicated by R). Not only is ammonium a source of nitrogen and a key metabolite for many living organisms, but it is an integral part of the global nitrogen cycle. As such, human impact in recent years could have an effect on the biological communities that depend on it. Acid–base properties The ammonium ion is generated when ammonia, a weak base, reacts with Brønsted–Lowry acid–base theory, Brønsted acids (proton donors): : The ammonium ion is mildly acidic, reacting with Brønsted bases to return ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phosphonium
In chemistry, the term phosphonium (more obscurely: phosphinium) describes polyatomic cations with the chemical formula (where R is a hydrogen or an alkyl, aryl, organyl or halogen group). These cations have tetrahedral structures. The salts are generally colorless or take the color of the anions. Types of phosphonium cations Protonated phosphines The parent phosphonium is as found in the iodide salt, phosphonium iodide. Salts of the parent are rarely encountered, but this ion is an intermediate in the preparation of the industrially useful tetrakis(hydroxymethyl)phosphonium chloride: :PH3 + HCl + 4 CH2O → Many organophosphonium salts are produced by protonation of primary, secondary, and tertiary phosphines: :PR3 + H+ → The basicity of phosphines follows the usual trends, with R = alkyl being more basic than R = aryl. Tetraorganophosphonium cations The most common phosphonium compounds have four organic substituents attached to phosphorus. The quaternary p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethane
Ethane ( , ) is a naturally occurring Organic compound, organic chemical compound with chemical formula . At standard temperature and pressure, ethane is a colorless, odorless gas. Like many hydrocarbons, ethane is List of purification methods in chemistry, isolated on an industrial scale from natural gas and as a petrochemical by-product of oil refinery, petroleum refining. Its chief use is as feedstock for ethylene production. The ethyl group is formally, although rarely practically, derived from ethane. History Ethane was first synthesised in 1834 by Michael Faraday, applying electrolysis of a potassium acetate solution. He mistook the hydrocarbon product of this reaction for methane and did not investigate it further. The process is now called Kolbe electrolysis: : acetate, CH3COO− → CH3• + carbon dioxide, CO2 + electron, e− : CH3• + •CH3 → C2H6 During the period 1847–1849, in an effort to vindicate the radical theory of organic chemistry, Hermann Kolbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Syntheses
''Organic Syntheses'' is a peer-reviewed scientific journal that was established in 1921. It publishes detailed and checked procedures for the synthesis of organic compounds. A unique feature of the review process is that all of the data and experiments reported in an article must be successfully repeated in the laboratory of a member of the editorial board as a check for reproducibility prior to publication. The journal is published by Organic Syntheses, Inc., a non-profit corporation. An annual print version is published by John Wiley & Sons on behalf of Organic Syntheses, Inc. History Prior to World War I, work on synthetic organic chemistry in the United States had been quite limited, and most of the reagents used in laboratories had to be imported from Europe. When export stoppages and trade embargoes cut off this source, Clarence Derick, a professor of chemistry at University of Illinois at Urbana-Champaign, began an effort to synthesize these needed chemicals in industri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Albert Noyes
William Albert Noyes (November 6, 1857 – October 24, 1941) was an American analytical and organic chemist. He made pioneering determinations of atomic weights, chaired the chemistry department at the University of Illinois Urbana–Champaign from 1907 to 1926, was the founder and editor of several important chemical journals, and received the American Chemical Society's highest award, the Priestley Medal, in 1935. Early life and education Noyes was born on November 6, 1857, near Independence, Iowa, son of Spencer W. and Mary Noyes, née Packard. He earned A.B. and B.S. degrees from Grinnell College in 1879 (having originally enrolled in 1875 in classical studies, with chemistry as a side subject). As an undergraduate, in the winter quarters Noyes taught school full-time in the countryside. On graduating he studied and taught analytical chemistry at Grinnell, until he began graduate school at Johns Hopkins University in January 1881. There, working with Ira Remsen, Noye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DuPont
Dupont, DuPont, Du Pont, duPont, or du Pont may refer to: People * Dupont (surname) Dupont, also spelled as DuPont, duPont, Du Pont, or du Pont is a French surname meaning "of the bridge", historically indicating that the holder of the surname resided near a bridge. , the name was the fourth most popular surname in Belgium, and , i ..., a surname of French origin * Du Pont family, one of the wealthiest families in the United States Companies * DuPont, one of the world's largest chemical companies * Du Pont Motors, a marine engine and automobile manufacturer from 1919 to 1931 * Dupont Brewery, a brewery in Belgium Places in the United States * Dupont, Colorado, an unincorporated community * Du Pont, Georgia, a town * Dupont, Indiana, a town * Dupont, Pointe Coupee Parish, Louisiana, an unincorporated community * Dupont, Ohio, a village * Dupont, Pennsylvania, a borough * Dupont, Tennessee, a community * DuPont, Washington, a city * Dupont, Wisconsin, a town * DuPont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha Chi Sigma
Alpha Chi Sigma () is a professional fraternity specializing in the fields of the chemical sciences. It has both collegiate and professional chapters throughout the United States consisting of both men and women and numbering more than 78,000 members. The fraternity aims to bring together students and professionals pursuing a wide variety of chemistry-related careers. History Founding The Alpha Chi Sigma fraternity was organized at the University of Wisconsin–Madison by a group of undergraduates who were fellow students in chemistry at that time. Later documents set the date of founding as December 11, 1902. The founders were: * Raymond Tracy Conger * Harold Everett Eggers * Joseph Gerard Holty * Alfred Emil Kundert * Joseph Howard Mathews * Edward Gustav Mattke * Bart Eldred McCormick * Frank Joseph Petura * James Chisholm Silverthorn Purpose The Three Objects of Alpha Chi Sigma: # To bind its members with a tie of true and lasting friendship. # To strive for the adv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tau Kappa Epsilon
Tau Kappa Epsilon (), commonly known as or Teke, is a social college fraternities and sororities, fraternity founded on January 10, 1899, at Illinois Wesleyan University. The organization has chapters throughout the United States and Canada, making the Fraternity an international organization. Since its founding in 1899, Tau Kappa Epsilon Fraternity has never had an exclusionary or discriminatory clause to prevent individuals from joining and has instead admitted members based on their "personal worth and character". As of spring 2024, there are 209 active chapters and colonies with over 301,000-lifetime members. While Tau Kappa Epsilon is primarily mentioned as a collegiate fraternity, the organization emphasizes that it is a "Fraternity for Life". Many chapters have active alumni associations that support philanthropic causes, mentor collegiate members, and host social events. Famous Teke alumni that continued their involvement with the Fraternity include National Football Leag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roger Adams
Roger Adams (January 2, 1889 – July 6, 1971) was an American organic chemist who developed the eponymous Adams' catalyst, and helped determine the composition of natural substances such as complex vegetable oils and plant alkaloids. He isolated and identified CBD in 1940. As head of the Chemistry department at the University of Illinois from 1926 to 1954, he influenced graduate education in America, taught over 250 Ph.D. students and postgraduate students, and served in military science during World War I and World War II. Early life Adams was born in Boston, Massachusetts to railroad official Austin W. Adams and Lydia Curtis, and grew up in a prosperous neighborhood in South Boston, the last child in a gifted family that included Adams's three older sisters (two went to Radcliffe College and one to Smith College). Adams was part of the prominent Adams family, and was descended from John Adams's grandfather. Adams attending Boston Latin School and Cambridge Latin High S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
