The hydrogenation of cycloalkenes over direct-synthetized well-defined zero-valent Pt nanoparticles incorporated TUD-1 mesoporous material

Well-defined Pt nanoparticles were integrated into the mesoporous material TUD-1 by applying one-pot sol-gel methodology and denoted as Pt-TUD-1. The characterization data of Pt-TUD-1 confirmed the presence of highly dispersed nanoparticles of zero-valent platinum (Pt-0) of 5-10 nm average size incorporated into the three-dimensional silica framework. Pt-TUD-1 was used to catalyze the liquid-phase hydrogenation of four cycloalkenes; cyclopentene (CPE), cyclohexene (CXE), cyclooctene (COE), and cyclooctadiene (COD) without the use of any solvents in room temperature. The obtained results showed that cyclopentene is the fastest to be hydrogenated where 57.7% was converted within one hour's reaction. The activity of Pt-TUD-1 benchmarked not only the commercial Pt nanopowder but also the Pt supported SiO2 and SBA-15. Moreover, Pt-TUD-1 showed high stability and it was recycled successfully for four consecutive runs without activity loss.

Automated summary

Pt nanoparticles were successfully integrated into the mesoporous material TUD-1 using a one-pot sol-gel method to create Pt-TUD-1, which exhibited high efficiency and stability in liquid-phase hydrogenation reactions.