Nanotubular TiO2-supported amorphous Co–B catalysts and their catalytic performances for hydroformylation of cyclohexene

Abstract TiO 2 nanotubes supported amorphous Co–B catalysts (Co–B/TNTs) were prepared via WI-CRP. The catalysts were characterized with TEM, XPS, TPD, nitrogen adsorption and so on. The catalytic performances and stabilities of Co–B/TNTs for hydroformylation of cyclohexene as well as the influence factors, such as reaction media and Co loading, were investigated. The Co–B/TNTs not only exhibited better catalytic performances in ether than in acetone and alcohol, but also showed higher activities and stabilities than TiO 2 powder supported amorphous Co–B under the same reaction conditions. The reuse of Co–B/TNTs was also tested, and the results showed that the used catalysts maintained high catalytic activity.