Abstract
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•Well-defined Pt0 nanoparticles were incorporated into TUD-1 by one-step procedure.•The size of Pt0 nanoparticles was in the range of 5–10 nm.•Pt-TUD-1 catalyzed the solvent-free hydrogenation of four different cycloalkenes at room temperature.•Pt-TUD-1 exhibited higher activity than Pt incorporated mordenite, ferrite, or SBA-15.
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 (Pt0) 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.