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pro vyhledávání: '"Johann Gaube"'
Autor:
Johann Gaube, Hans-Friedrich Klein
Publikováno v:
Applied Catalysis A: General. 470:361-368
Combined studies of adsorption and hydrogenation have been carried out using Pd black electrochemically deposited in a loose packed thin layer in order to avoid co-adsorption on a support. Pd black covered with a monomolecular layer of strongly adsor
Publikováno v:
Applied Catalysis A: General. :21-27
The selective hydrogenation of 1,5,9-cis,trans,trans-cyclo-dodecatriene (1,5,9-ctt-CDT) towards cyclo-dodecene (CDE) depends strongly on the pressure of hydrogen, respectively the hydrogenation rate. High yields of CDE (>90%) can only be reached at e
Autor:
Johann Gaube, Hans-Friedrich Klein
Publikováno v:
Applied Catalysis A: General. 374:120-125
The recently proposed hypothesis of two incompatible mechanisms of chain growth based on CH 2 - and CO-insertion is furthermore supported by a detailed interpretation of the 13 CH 2 N 2 co-feeding experiments of Maitlis and co-workers and of the sele
Autor:
Johann Gaube, Hans-Friedrich Klein
Publikováno v:
Applied Catalysis A: General. 350:126-132
The promoter effect of alkali on Fischer-Tropsch iron catalysts causes an increased 1-alkene selectivity, a slightly increased reaction rate, an increased growth probability of hydrocarbon chains and also an increased resistance against oxidation of
Publikováno v:
Applied Catalysis A: General. 343:87-94
The liquid phase hydrogenation of 1,5,9- c , t , t -cyclo-dodecatriene (CDT) and of cyclododecadienes (CDD) towards cyclo-dodecene (CDE) using a Pd/Al 2 O 3 catalyst of egg-shell type has been studied in discontinuous operation at different hydrogen
Autor:
Johann Gaube, Hans-Friedrich Klein
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 283:60-68
A new mechanism of the Fischer–Tropsch synthesis is proposed based on the hypothesis that two incompatible mechanisms are involved resting exclusively on methylene and on carbon monoxide insertion, respectively. This hypothesis is reflected by the
Publikováno v:
Chemical Engineering & Technology. 29:1487-1495
The hydrogenation of dienes such as 1,3-butadiene, cyclooctadiene, and of acetylenic hydrocarbons on Pd catalysts shows high reaction rates and consequently, a strong influence of mass transfer on the selectivity of the intermediate alkene or cycloal
Publikováno v:
Industrial & Engineering Chemistry Research. 45:8801-8806
While the oxidation of acrolein on mixed oxide (Mo, V, W) catalysts shows an exceptionally high selectivity with respect to acrylic acid, the selectivity of the analogous oxidation of methacrolein is only moderate. This is due to a considerably lower
Publikováno v:
Industrial & Engineering Chemistry Research. 45:8794-8800
Comprehensive kinetic studies of the oxidation of methacrolein on mixed oxide (Mo, V, W) catalysts have been undertaken in order to find ways of catalyst improvement to achieve a high selectivity toward methacrylic acid. Steady-state kinetic experime
Publikováno v:
Catalysis Today. 71:381-394
Carbon number distributions of Fischer–Tropsch products on iron and cobalt catalysts show deviations from the ideal Anderson–Schulz–Flory (ASF) distribution. For products obtained on cobalt catalysts these deviations are traced back by many aut