title: Protonated titanate nanotubes as solid acid catalyst.
abstract: Protonated titanate nanotubes are demonstrated to function as a highly active solid Lewis acid catalyst even near room temperature. The high catalytic activity for the reaction can be attributed to the unique nanotube structure, which contains both Brønsted and Lewis acid sites.
authors.affiliation: Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Kitano
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Nakajima
authors.forename: Junko N
authors.initials: JN
authors.lastname: Kondo
authors.forename: Shigenobu
authors.initials: S
authors.lastname: Hayashi
authors.forename: Michikazu
authors.initials: M
authors.lastname: Hara