"000338913700015" . . . . . "Smol\u00E1kov\u00E1, Lucie" . "Rapeseed oil, Transesterification, Fixed-bed reactor, Potassium, Alumina, Supported catalyst"@en . "http://www.sciencedirect.com/science/article/pii/S1872206714600541" . "P(GAP106/11/0773)" . "[DCBDED861C7D]" . "Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors"@cs . . "Catalytically active, stable, and mechanically durable solid K/Al2O3 catalysts for the transesterification of rapeseed oil with methanol was studied. In a batch reactor, high catalytic activity was accompanied by leaching of K species, caused by glycerol, and mechanical destruction of the solid catalyst as a result of contact with the stirrer. In a fixed-bed reactor, some leaching of K species into the liquid phases was also observed, but approached 0 during 30 h of time-on-stream; the activity of the K/Al2O3 catalyst (83% ester yield) was stable for 100 h of time-on-stream and no mechanical destruction of the catalyst was observed. The populations of K2O and K-O-Al species for fresh and used K/Al2O3 catalysts were compared using Fourier transform infrared spectroscopy. It was found that some K2O species leached into the liquid phases at the beginning of the reaction."@cs . . "Kut\u00E1lek, Petr" . . "Chinese Journal of Catalysis" . "Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors"@en . "7"^^ . . "Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors" . "Catalytically active, stable, and mechanically durable solid K/Al2O3 catalysts for the transesterification of rapeseed oil with methanol was studied. In a batch reactor, high catalytic activity was accompanied by leaching of K species, caused by glycerol, and mechanical destruction of the solid catalyst as a result of contact with the stirrer. In a fixed-bed reactor, some leaching of K species into the liquid phases was also observed, but approached 0 during 30 h of time-on-stream; the activity of the K/Al2O3 catalyst (83% ester yield) was stable for 100 h of time-on-stream and no mechanical destruction of the catalyst was observed. The populations of K2O and K-O-Al species for fresh and used K/Al2O3 catalysts were compared using Fourier transform infrared spectroscopy. It was found that some K2O species leached into the liquid phases at the beginning of the reaction."@en . . "Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors"@cs . . "CN - \u010C\u00EDnsk\u00E1 lidov\u00E1 republika" . . . "4193" . "0253-9837" . "1"^^ . . . . "Catalytically active, stable, and mechanically durable solid K/Al2O3 catalysts for the transesterification of rapeseed oil with methanol was studied. In a batch reactor, high catalytic activity was accompanied by leaching of K species, caused by glycerol, and mechanical destruction of the solid catalyst as a result of contact with the stirrer. In a fixed-bed reactor, some leaching of K species into the liquid phases was also observed, but approached 0 during 30 h of time-on-stream; the activity of the K/Al2O3 catalyst (83% ester yield) was stable for 100 h of time-on-stream and no mechanical destruction of the catalyst was observed. The populations of K2O and K-O-Al species for fresh and used K/Al2O3 catalysts were compared using Fourier transform infrared spectroscopy. It was found that some K2O species leached into the liquid phases at the beginning of the reaction." . "RIV/62243136:_____/14:GACR11CL" . "Kubi\u010Dka, David" . . "H\u00E1jek, Martin" . "10.1016/S1872-2067(14)60054-1" . . "7" . "5"^^ . "RIV/62243136:_____/14:GACR11CL!RIV15-GA0-62243136" . "Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors" . . "\u010Capek, Libor" . "35" . "Aspects of stability of K/Al2O3 catalysts for the transesterification of rapeseed oil in batch and fixed-bed reactors"@en .