title: Gold nanoparticle-catalyzed environmentally benign deoxygenation of epoxides to alkenes.
abstract: We have developed a highly efficient and green catalytic deoxygenation of epoxides to alkenes using gold nanoparticles (NPs) supported on hydrotalcite [HT: Mg(6)Al(2)CO(3)(OH)(16)] (Au/HT) with alcohols, CO/H(2)O or H(2) as the reducing reagent. Various epoxides were selectively converted to the corresponding alkenes. Among the novel metal NPs on HT, Au/HT was found to exhibit outstanding catalytic activity for the deoxygenation reaction. Moreover, Au/HT can be separated from the reaction mixture and reused with retention of its catalytic activity and selectivity. The high catalytic performance of Au/HT was attributed to the selective formation of Au-hydride species by the cooperative effect between Au NPs and HT.
authors.affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Akifumi
authors.initials: A
authors.lastname: Noujima
authors.forename: Takato
authors.initials: T
authors.lastname: Mitsudome
authors.forename: Tomoo
authors.initials: T
authors.lastname: Mizugaki
authors.forename: Koichiro
authors.initials: K
authors.lastname: Jitsukawa
authors.forename: Kiyotomi
authors.initials: K
authors.lastname: Kaneda
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D000536:Aluminum Hydroxide / Q000737:chemistry; D002384:Catalysis; D004852:Epoxy Compounds / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D008276:Magnesium Hydroxide / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*
chemical_list: D000475:Alkenes; D004852:Epoxy Compounds; C010467:hydrotalcite; D000536:Aluminum Hydroxide; D006046:Gold; D008276:Magnesium Hydroxide