title: Synthesis of hydrogen peroxide from H2 and O2 in water and ethanol catalyzed by nanoclustered Pd(0) on silica: strong selectivity enhancement exerted by the addition of ionic liquids.
abstract: Hydrogen peroxide (H(2)O(2)) synthesis directly from dioxygen and dihydrogen was carried out using a continuous flow reactor with a Pd catalyst. The effects of ionic liquids on the selectivity to H(2)O(2) were studied on a Pd/SiO(2) catalyst. It was found that the ionic liquid [BMIM][BF(4)] in water or ethanol is quite beneficial to the selectivity to H(2)O(2). Ca. 95% selectivity after 1 h in both solvents and a relatively high selectivity i.e. (about 50% in ethanol and 40% in water) after 5 h reaction have been achieved. On the other hand, a plausible mechanism for the effects of ion liquids on this reaction system was suggested on the basis of the preliminary results.
authors.affiliation: State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Chongheng
authors.initials: C
authors.lastname: He
authors.forename: Sandro
authors.initials: S
authors.lastname: Campestrini
authors.forename: Benedetto
authors.initials: B
authors.lastname: Corain
authors.forename: Weikang
authors.initials: W
authors.lastname: Yuan
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Han