Aquivion® PFSA-Based Spray-Freeze Dried Composite Materials with SiO2 and TiO2 as Hybrid  Catalysts for the Gas Phase Dehydration of Ethanol to Ethylene in Mild Conditions

30 Pages Posted: 3 Aug 2022 Last revised: 21 Feb 2023

See all articles by Stefania Albonetti

Stefania Albonetti

Alma Mater Studiorum University of Bologna Dipartimento di Chimica Industriale Toso Montanari

Martina Battisti

affiliation not provided to SSRN

Sara Andreaoli

affiliation not provided to SSRN

Riccardo Bacile

affiliation not provided to SSRN

Claudio Oldani

affiliation not provided to SSRN

Simona Ortelli

affiliation not provided to SSRN

Anna Luisa Costa

affiliation not provided to SSRN

Giuseppe Fornasari

University of Bologna

Abstract

The spray-freeze-drying approach was successfully applied for the preparation of Aquivion based composites with high surface area. The encapsulation of different oxides, such as TiO 2 and SiO 2 in the superacid matrix was easily obtained using this technique and compared with catalysts prepared by the impregnation conventional route. SFD approach led to the preparation of porous micro-granules characterised by a high homogeneity in the phase distribution. The prepared materials were active and selective for the gas phase dehydration of ethanol to ethylene in mild conditions. The increase of the accessibility and the stability of active sites improved the activity of the composites and allowed to reduce the amount of the superacid resin. Moreover, the type of encapsulated oxide, TiO 2 or SiO 2 , modified the improved performance of the catalysts , having TiO2 the higher efficiency for ethanol conversion and selectivity in ethylene at very low temperature.

Keywords: heterogeneous acid catalysts, perfluorosulfonic resins, ethanol dehydration, ethylene

Suggested Citation

Albonetti, Stefania and Battisti, Martina and Andreaoli, Sara and Bacile, Riccardo and Oldani, Claudio and Ortelli, Simona and Costa, Anna Luisa and Fornasari, Giuseppe, Aquivion® PFSA-Based Spray-Freeze Dried Composite Materials with SiO2 and TiO2 as Hybrid  Catalysts for the Gas Phase Dehydration of Ethanol to Ethylene in Mild Conditions. Available at SSRN: https://ssrn.com/abstract=4179956 or http://dx.doi.org/10.2139/ssrn.4179956

Stefania Albonetti (Contact Author)

Alma Mater Studiorum University of Bologna Dipartimento di Chimica Industriale Toso Montanari ( email )

Via Zamboni, 33
Bologna, 40126
Italy
0039 338 6399726 (Phone)
40136 (Fax)

HOME PAGE: http://https://www.unibo.it/sitoweb/stefania.albonetti

Martina Battisti

affiliation not provided to SSRN ( email )

No Address Available

Sara Andreaoli

affiliation not provided to SSRN ( email )

No Address Available

Riccardo Bacile

affiliation not provided to SSRN ( email )

No Address Available

Claudio Oldani

affiliation not provided to SSRN ( email )

No Address Available

Simona Ortelli

affiliation not provided to SSRN ( email )

No Address Available

Anna Luisa Costa

affiliation not provided to SSRN ( email )

No Address Available

Giuseppe Fornasari

University of Bologna ( email )

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