Protection of rhodium/alumina catalysts by potassium functionalization of the alumina support

摘要: It has been found that the exchange functionalization of isolated Al-OH groups with K{sup +} to produce Al-OK provides a method for stabilization Rh/Al{sub 2}O{sub 3} catalysts against Rh{sup I} formation. K{sub 2}CO{sub was employed functionalization, and thermal decomposition CO{sub 3}{sup 2{minus}} anion (T < 870 K) studied along effective preferential removal groups, producing species. Rh/K-Al{sub are shown be stable 0}{sub x} degradation in presence CO(g). The procedure is preventing re-formation under extreme hydrolysis conditions up 770 K. This may lead practical methods protection Rh environmental loss catalytic activity due degradation.