The ruthenium hydrido-carbonyl cluster in NaY zeolite,synthesized by the reaction of Ru3(CO)(12)/NaY with hydrogen,was characterized by FTIR,UV-VIS and EXAFS spectroscopies.
A vacuum heating operation at 623 K on the surfaces of SiO_2-supported promoted ca- talysts makes it possible to reveal the electron transfer from Co and Fe additives to Rh atoms: a Rh catalyst containing 1 % Eh under...A vacuum heating operation at 623 K on the surfaces of SiO_2-supported promoted ca- talysts makes it possible to reveal the electron transfer from Co and Fe additives to Rh atoms: a Rh catalyst containing 1 % Eh under CO exhibits geminal CO IR bands only, while the presence of Co and Fe in promoted Rh catalysts results in linear and bridged CO chemisorp- tions on Rh in connection with their promotion in the selective hydroformylation of propy- lene.展开更多
Ru111(NH3)6 in the cages of NaX zeolite was converted in the presence of CO+H2 into [Ru6(CO)18]2-, which was characterized by in-situ FTIR, UV-VIS and EXAFS spectroscopies. The material derived from [Ru6(CO)18]2-/NaX ...Ru111(NH3)6 in the cages of NaX zeolite was converted in the presence of CO+H2 into [Ru6(CO)18]2-, which was characterized by in-situ FTIR, UV-VIS and EXAFS spectroscopies. The material derived from [Ru6(CO)18]2-/NaX exhibited high calalytic activity in n-butane hydrogenolysis.展开更多
文摘The ruthenium hydrido-carbonyl cluster in NaY zeolite,synthesized by the reaction of Ru3(CO)(12)/NaY with hydrogen,was characterized by FTIR,UV-VIS and EXAFS spectroscopies.
文摘A vacuum heating operation at 623 K on the surfaces of SiO_2-supported promoted ca- talysts makes it possible to reveal the electron transfer from Co and Fe additives to Rh atoms: a Rh catalyst containing 1 % Eh under CO exhibits geminal CO IR bands only, while the presence of Co and Fe in promoted Rh catalysts results in linear and bridged CO chemisorp- tions on Rh in connection with their promotion in the selective hydroformylation of propy- lene.
文摘Ru111(NH3)6 in the cages of NaX zeolite was converted in the presence of CO+H2 into [Ru6(CO)18]2-, which was characterized by in-situ FTIR, UV-VIS and EXAFS spectroscopies. The material derived from [Ru6(CO)18]2-/NaX exhibited high calalytic activity in n-butane hydrogenolysis.
