In the last two years Alta S.p.A., Pisa, Italy, has been engaged in the development of advanced catalytic beds for hydrogen peroxide (HP) decomposition in collaboration with the Department of Chemistry and Industrial Chemistry of Pisa University. A series of chemical activity tests at atmospheric pressure on a number of catalyst-substrate preparations indicated a platinum catalyst supported on alpha−alumina and named FC-LR-87 as the most promising candidate for characterization under more realistic conditions in a suitably designed HP monopropellant thruster prototype. Scanning Electron Microscopy (SEM) and X-Ray diffractometry (XRD) analyses have been carried out on FC-LR-87 catalyst samples before and after continuous and pulsed firing tests. These analyses showed that the decomposition of 2 kg of high grade HP did not cause any measurable loss of catalyst from the support, confirmed the stability of the small and well dispersed platinum particles on the alumina su...
Comparative Characterization of Advanced Catalytic Beds for Hydrogen Peroxide Thrusters
PASINI, ANGELO;D'AGOSTINO, LUCA;
2008-01-01
Abstract
In the last two years Alta S.p.A., Pisa, Italy, has been engaged in the development of advanced catalytic beds for hydrogen peroxide (HP) decomposition in collaboration with the Department of Chemistry and Industrial Chemistry of Pisa University. A series of chemical activity tests at atmospheric pressure on a number of catalyst-substrate preparations indicated a platinum catalyst supported on alpha−alumina and named FC-LR-87 as the most promising candidate for characterization under more realistic conditions in a suitably designed HP monopropellant thruster prototype. Scanning Electron Microscopy (SEM) and X-Ray diffractometry (XRD) analyses have been carried out on FC-LR-87 catalyst samples before and after continuous and pulsed firing tests. These analyses showed that the decomposition of 2 kg of high grade HP did not cause any measurable loss of catalyst from the support, confirmed the stability of the small and well dispersed platinum particles on the alumina su...I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
