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作 者:Philip Ball
机构地区:[1]不详
出 处:《National Science Review》2018年第5期690-693,共4页国家科学评论(英文版)
摘 要:Much of industrial chemical processing (in the petrochemicals industry,for example),and a great deal of laboratory chemical synthesis, involves catalysts that both lower the energy barrier to reaction and may help steer a reaction along a particular path.Traditionally, catalysts have come in two classes:heterogeneous,typically meaning that the catalyst is an extended solid;and homogeneous,where the catalyst is a small molecule that shares a solvent with the reactants.In heterogeneous catalysis,the reaction generally takes place on a surface,involving molecules attached there by covalent bonds.Homogeneous catalysts are often organometallic compounds,in which a metal atom or small cluster of atoms supplies the active site for reaction.
关 键 词:SINGLE-ATOM CATALYSIS industrial CHEMICAL processing PETROCHEMICALS INDUSTRY
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