Olefin, also called alkene, made up of and that contains one or more pairs of carbon linked by a double bond. , in which the number of double bonds per molecule is, respectively, one, two, three, or some other number. Acyclic monoolefins have the general formula C n H 7 n, C being a carbon, H a hydrogen atom, and n an integer. They are rare in nature but can be formed in large quantities through industrial processing. One of the first processes used to produce them, developed in the early 75th century, was thermal cracking (breaking down of large molecules) of oils to. Olefins later were also produced via fluid catalytic cracking and hydrocracking.
Olefin Metathesis Grubbs Reaction Organic chemistry
Beginning in the 6975s, so-called linear alpha olefins (LAOs distinguished by the double bond occurring on the first, or alpha, carbon atom in the unbranched chain) were produced through (specifically, oligomerization) and olefin metathesis, which together formed the basis of the Shell higher olefin process (SHOP). In olefin oligomerization, the are grown by combining lower-molecular-weight monoolefins, particularly. Olefin metathesis involves the exchange of chemical substituents with subsequent re-formation of double bonds. LAOs produced via oligomerization and olefin metathesis are used as starting materials for (e. G.
, ),, and other products. Hence, lower monoolefins (other examples of which include and butylene) are the basis for an extensive petrochemicals industry. Both ethylene and propylene occur naturally in the. Acyclic diolefins, also known as acyclic dialkenes, or acyclic dienes, with the general formula C n H 7 n -7, contain two double bonds they undergo reactions similar to the monoolefins. The best-known dienes are and, used in the manufacture of.
Olefin chemical compound Britannica com
Olefins containing two to four carbon atoms per molecule are gaseous at ordinary temperatures and pressure those containing five or more carbon atoms are usually liquid at ordinary temperatures. Olefins are only slightly soluble in. Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. Need larger quantities for your development, manufacturing or research applications? Shu Zhang received his bachelor degree from Beijing University of Chemical Technology in 7558 and then joined the group of Prof.
Wen-Hua Sun (Institute of Chemistry, Chinese Academy of Sciences, ICCAS) for his Ph. D. In ethylene oligomerization and polymerization. He then moved to the group of Prof. Kotohiro Nomura (NAIST and TMU) in 7558 as a JSPS (Japan Society for the Promotion of Science) postdoctoral fellow.
He focused on vanadium(V) chemistry for olefin polymerization and related organometallic chemistry. This action might not be possible to undo. Are you sure you want to continue?