The solvent determines the product in the hydrogenation of aromatic ketones using unligated RhCl<sub>3</sub> as catalyst precursor
作者:Soumyadeep Chakrabortty、Nils Rockstroh、Stephan Bartling、Henrik Lund、Bernd H. Müller、Paul C. J. Kamer、Johannes G. de Vries
DOI:10.1039/d1cy01504d
日期:——
Alkyl cyclohexanes were synthesized in high selectivity via a combined hydrogenation/hydrodeoxygenation of aromaticketones using ligand-free RhCl3 as pre-catalyst in trifluoroethanol as solvent. The true catalyst consists of rhodiumnanoparticles (Rh NPs), generated in situ during the reaction. A range of conjugated as well as non-conjugated aromaticketones were directly hydrodeoxygenated to the corresponding
Preferential catalytic hydrogenation of aromatic compounds versus ketones with a palladium substituted polyoxometalate as pre-catalyst
作者:Vladimir Kogan、Zeev Aizenshtat、Ronny Neumann
DOI:10.1039/b110937p
日期:2002.3.11
finding that arenes could be selectively reduced in the presence of distal ketone groups under similar conditions, 30 bar H2 and 200°C. For example, 1-phenyl-2-propanone yielded 1-cyclohexyl-2-propanone with no reduction of the ketone moiety. Additionally, aromatic compounds with vicinal (conjugated) ketone moieties underwent complete hydrogenation to saturated hydrocarbons and catalytic McMurry coupling
一种 钯负载在γ-氧化铝或活性炭上的具有Keggin结构的取代多金属氧酸盐用作 催化剂 催化前体 氢化。催化剂系统快速启用氢化 的 竞技场在30 bar H 2和230 °C下。最有趣的是发现竞技场在30 bar H 2和200 °C的类似条件下,如果存在远端酮基,则可以选择性地还原H 2 O 3。例如,1-苯基-2-丙酮 屈服 1-环己基-2-丙酮 没有 减少酮部分的基团。此外,芳香族化合物与邻近 (结合)酮 部分完成 氢化 饱和 碳氢化合物 并观察到催化McMurry偶合 脂族醛。
HYDROLIQUEFACTION OF COAL AND HYDROGENATION OF PHENANTHRENE WITH IRON CATALYSTS ACTIVATED BY NEW METHOD
作者:Eisuke Ogata、Kazuya Hatakeyama、Yoshio Kamiya
DOI:10.1246/cl.1985.1913
日期:1985.12.5
Iron catalysts obtained by the CO pretreatment of iron oxide and iron ore suspended in hydrocarbon solvents presented high catalytic activities for the hydroliquefaction of coal and hydrogenation of phenanthrene.
Method of microwave bond cleavage of a hydrocarbon compound in a liquid
申请人:Battelle Memorial Institute
公开号:US06106675A1
公开(公告)日:2000-08-22
The method of the present invention is a microwave bond cleavage of a first hydrocarbon compound, the first hydrocarbon compound in a liquid phase and substantially non-aqueous, to a second compound having a shorter carbon chain than the first hydrocarbon compound. The method has the steps of exposing a combination of the first hydrocarbon compound with a supported catalyst having a carrier of a non-metallic amorphous solid with at least one catalytic metal dispersed therein to microwave energy thereby converting the first hydrocarbon compound into the second hydrocarbon compound, and recovering the second hydrocarbon compound. Advantages of the present invention include use of a low cost supported catalyst at ambient temperature and pressure.