Journal
CHEMCATCHEM
Volume 14, Issue 18, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.202200582
Keywords
catalysis; heterogeneous; homogeneous; hydrogenolysis; nanoparticles
Categories
Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division [DE-SC0000776]
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Silica-supported Pd, Rh, and Pt metal nanoparticles catalyze the hydrogenolysis of the Pt-OPh bond of ((t)bpy)Pt(OPh)Cl to release PhOH. Kinetic studies show that Pd exhibits higher reactivity compared to Rh and Pt. The results of kinetic studies with Pd/SiO2 are consistent with a first-order dependence on the catalyst and the molecular Pt(II) complex ((t)bpy)Pt(OPh)Cl. TEM-EDS mapping and ICP-OES measurements reveal approximately 10-16% Pt deposition on the surface of Pd/SiO2 after 1 hour of hydrogenolysis of ((t)bpy)Pt(OPh)Cl.
Silica-supported Pd, Rh and Pt metal nanoparticles catalyze the hydrogenolysis of the Pt-OPh bond of ((t)bpy)Pt(OPh)Cl to release PhOH. Based on kinetic studies monitored by H-1 NMR spectroscopy, the reactivity trend is Pd>Rh>Pt. Kinetic studies with Pd/SiO2 are consistent with a first-order dependence on the catalyst and the molecular Pt(II) complex ((t)bpy)Pt(OPh)Cl. Using TEM-EDS mapping and ICP-OES measurements of a recovered Pd catalyst, after 1 hour of hydrogenolysis of ((t)bpy)Pt(OPh)Cl, approximately 10-16 % Pt deposition (relative to Pd mol %) on the Pd/SiO2 surface was quantified.
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