Abstract
AbstractIn order to investigate the influence of modified Keggin‐polyoxometalates and supported gold particles on reactivity and reaction pathways in thermal 2‐propanol oxidation, titanium‐substituted, insoluble Cs+‐salts of the Keggin‐heteropolytungstate (H3PW12O40) Cs3PW12O40 1, Cs5PW11TiO40 · nH2O 2, and supported gold composite Au/Cs5PW11TiO40 · nH2O 3 were synthesized and characterized as molecular model catalysts. The Ti‐substituted polyoxometalate 2 did not show any observable activity in the gas phase oxidation of 2‐propanol. The presence of gold nano‐particles activates the supporting polyoxometalate 3 and enhances formation of different oxidation products (acetone, diisopropyl ether) depending on the presence of different types of active sites. The formation of the diisopropyl ether involves two adjacent 2‐propanol molecules adsorbed on two different types of active sites, whereas the dehydrogenation reaction for the acetone formation involves the initial adsorption of 2‐propanol on one type of active site.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.