[17].Here,wereportResearchFacultyEnvironmentalEarthScience,HokkaidoUniversity,Kita10NishiSapporo060-0810,Japane-mail:kamiya@ees.hokudai.ac.jpKannoGraduateSchoolEnvironmentalScience,HokkaidoUniversity,Kita10NishiSapporo060-0810,Japan123CatalLett(2008)125:392–395DOI10.1007/s10562-008-9574-6selectivereduction...