Kinetics and mechanism of the reaction of H2 with Pt0-nanoparticles in aqueous solutions expressed by the catalytic reduction of PW12O403-
1
1,2
3
4
1Department of Chemical Science and the Radical Research Centre, Ariel University, Ariel, Israel
2Department of Chemistry, Ben-Gurion University, Beer-Sheva, Israel
3Department of Chemical Sciences, Ariel University, Ariel, Israel
4Department of Chemical Engineering Biotechnology and Materials and the Radical Research Center, Ariel University, Ariel, Israel
2Department of Chemistry, Ben-Gurion University, Beer-Sheva, Israel
3Department of Chemical Sciences, Ariel University, Ariel, Israel
4Department of Chemical Engineering Biotechnology and Materials and the Radical Research Center, Ariel University, Ariel, Israel
The reaction of H2 with Pt0-nanoparticles, Pt0-NPs, stabilized by a monolayer of PW12O403- was studied by following the rate of formation of PW12O405-. The rate depends linearly on [Pt0-NPs] and on [H2] but is independent on [PW12O403-]. These results prove that the rate-determining step is either Pt0-NP-H2 ® Pt0-NP-(H)2 or Pt0-NP-(H)2 ® (Pt0-NP-H)- + H3O+. This is the first kinetic measurement of H2+Pt0-NP in the absence of an electrical field.
Powered by Eventact EMS