1. Keggin heteropolyacid supported on BN and C3N4: Comparison between catalytic and photocatalytic alcohol dehydration
- Author
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Igor Krivtsov, Leonardo Palmisano, Elisa I. García-López, Francesca Rita Pomilla, Giuseppe Marcì, Farnaz Fazlali, Ali Reza Mahjoub, Leonarda F. Liotta, Pomilla, F, Fazlali, F, Garcia-Lopez, E, Marci, G, Mahjoub, A, Kritsov, I, Liotta, L, Palmisano, L, Pomilla F.R., Fazlali F., Garcia Lopez E.I., Marci G., Mahjoub A.R., Kritsov I., Liotta L.F., and Palmisano L.
- Subjects
2-Propanol dehydration, Heteropolyacid, Keggin, Photocatalysis, Polyoxometalate ,Materials science ,Inorganic chemistry ,02 engineering and technology ,01 natural sciences ,Redox ,Catalysis ,Reaction rate ,Propene ,chemistry.chemical_compound ,Photocatalysi ,0103 physical sciences ,2-Propanol dehydration ,General Materials Science ,Keggin ,Carbon nitride ,010302 applied physics ,Polyoxometalate ,Mechanical Engineering ,Heteropolyacid ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Dehydration reaction ,chemistry ,Settore CHIM/03 - Chimica Generale E Inorganica ,Mechanics of Materials ,Boron nitride ,Photocatalysis ,Settore CHIM/07 - Fondamenti Chimici Delle Tecnologie ,0210 nano-technology - Abstract
The Keggin heteropolyacid (HPA), H3PW12O40 (PW12) has been supported on commercial boron nitride (BN) and two types of home prepared carbon nitride (C3N4). The supported PW12 was used in the gas-solid (photo)catalytic 2-propanol dehydration reaction to give propene at atmospheric pressure and temperatures in the range 70–120 °C and resulted more active than the pristine PW12. Reaction rate increased by increasing the temperature. Noticeably, the propene formation rate was higher by irradiating the catalytic system. The PW12/BN material resulted more active than PW12/C3N4. The acidity of the HPA cluster accounts for the catalytic role, whereas both the acidity and the redox properties of the HPA species were responsible for the increase of the reaction rate in the photo-assisted catalytic reaction.
- Published
- 2020