Cataylist - Bohr. - Element 107 (Vinyl)


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1997


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  1. Sep 09,  · Monodisperse Ni nanoparticles (NPs) have been synthesized by the reduction of nickel(II) acetylacetonate with the borane-tributylamine complex in a mixture of oleylamine and oleic acid. These Ni NPs are an active catalyst for the hydrolysis of the ammonia-borane (AB, H3N·BH3) complex under ambient conditions and their activities are dependent on the chemical nature of the oxide support that Cited by:
  2. This paper addresses a review of platinum-based hydrosilylation catalysts. The main field of application of these catalysts is the curing of silicone polymers. Since the s, this area has developed rapidly in connection with the emergence of new polymer compositions and new areas of application. Here we describe general mechanisms of the catalyst activity and the structural effects of the.
  3. Catalysts comprising a silica molecular sieve modified by a metal which forms acidic oxides selected from the group consisting of Group VIB and VIIB elements and, a Fischer-Tropsch catalyst wherein the ratio of zeolite to Fischer-Tropsch component is from to can be employed to produce gasoline quality liquid hydrocarbons from synthesis gas.
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  5. Hexafluoropropylene oxide (HFPO) compounds, including polymers, expressed by the general chemical formula (1) below: ##STR1## wherein R 1 is a single bond, an alkylene group of 1 to 10 carbon atoms, or said alkylene group in which a part of, or all of, the hydrogen atoms are substituted by fluorine atoms, Rf is a fluorine atom, a perfluoroalkyl group of 1 to 10 carbon atoms, or a Cited by: 1.
  6. Aromatic interactions play a key role in many chemical and biological systems. However, even if very simple models are chosen, the systems of interest are often too large to be handled with standard wave function theory (WFT). Although density functional theory (DFT) can easily treat systems of more than atoms, standard semilocal (hybrid) density functional approximations fail to describe.
  7. Chemical symbols are abbreviations used in chemistry for chemical elements, functional groups and chemical compounds. Element symbols for chemical elements normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.. Earlier symbols for chemical elements stem from classical Latin and Greek vocabulary. For some elements, this is because the.
  8. The preparation of a range of alkyl and aryl chiral vinyl aziridines was achieved in high yield and stereoselectivity, Catalyst-Free Stereocontrolled Formal [3 + 2]-Cycloaddition of CO2 for the Synthesis of Enantiopure Spiro[indoline-3,5′-oxazolidine]-2,2′-diones under Aqueous and Ambient Conditions. Chemical Reviews , (
  9. Today, many energy sources serve humanity. However, most energy sources, especially petroleum products, pose a severe danger to the environment becaus.