Liquid phase hydrogenation of unsaturated hydrocarbons on palladium, platinum and rhodium catalysts. Part I: kinetic study of 1-butene, 1,3-butadiene and 1-butyne hydrogenation on platinum.

Effect of oxide supports on Pd–Ni bimetallic catalysts for 1,3-butadiene hydrogenation

“…Because the hydrogenation of 1,3-butadiene only produces 1-butene in a batch reactor A c c e p t e d M a n u s c r i p t 16 as reported before [3], it is very likely that 1,3-butadiene is firstly hydrogenated to 1-butene, and then 1-butene isomerizes to trans-and cis-2-butenes in the flow reactor.…”

“…It has been reported that the activity of Pt-Ni bimetallic catalysts normalized by CO uptake is higher on γ-Al 2 O 3 than on ZrO 2 [5] and TiO 2 [6] for the hydrogenation of 1,3-butadiene in a batch reactor. Moreover, Boitiaux et al [16] and Primet et al [17] have demonstrated that the hydrogenation activity of 1,3-butadiene is insensitive to the M a n u s c r i p t 18 metal dispersions for Pt catalysts. Because the different activities among the Pt-Ni bimetallic catalysts [5,6] are not from the metal dispersion [16,17], they are possibly from the strong metal-support interaction (SMSI) between the small Pt-Ni nanoparticles and the oxide supports.…”

“…Moreover, Boitiaux et al [16] and Primet et al [17] have demonstrated that the hydrogenation activity of 1,3-butadiene is insensitive to the M a n u s c r i p t 18 metal dispersions for Pt catalysts. Because the different activities among the Pt-Ni bimetallic catalysts [5,6] are not from the metal dispersion [16,17], they are possibly from the strong metal-support interaction (SMSI) between the small Pt-Ni nanoparticles and the oxide supports. Even though Pd-Ni might also have SMSI with the corresponding oxide supports, the interaction of Pd with ZrO 2 and TiO 2 might be different from that of Pt with ZrO 2 and TiO 2 .…”

Kinetic study of the liquid-phase selective hydrogenation of 1-butyne in presence of 1-butene over a commercial palladium-based catalyst

“…Most of the experiments were performed in gas-phase at atmospheric pressure and at a single temperature level; covering all of them the range 0-35 • C. In the gas-phase hydrogenation systems, 1-butyne was the only unsaturated hydrocarbon fed and it was always the limiting reactant, with hydrogen/deuterium-to-1-butyne ratios in the range 2-6. The main references about 1-butyne hydrogenation in liquid phase over palladium catalysts are the experimental studies published by Boitiaux et al (1983Boitiaux et al ( , 1987. They also employed powdered laboratory catalysts and performed the experiments at only one level of temperature and hydrogen partial pressure, 20 • C and 20 atm, respectively.…”

Catalytic Hydrogenation of Hydrocarbons for Gasoline Production

“…However, unlike reactions over Pt/Al 2 O 3 , butane was not the sole product formed because double bond shift and isomerisation are also observed with Rh/Al 2 O 3 . 46 High conversion was also observed with 1,3-butadiene over the Rh catalyst, and several other products were also observed in addition to the main 1-butene product which includes tran-2-butene, butane and cis-2-butene. 1-butene hydrogenation also begins after a high conversion of 1,3-butadiene is achieved.…”