dr. Marianna Gambino

dr. Marianna Gambino
Room 4.76

Fluid Catalytic Cracking (FCC) is an industrial process for the production of valuable chemicals (e.g. gasoline and olefins) from crude oil feedstock [1]. The high activity of the FCC catalyst particle is governed by the interplay of the alumina matrix, that ensures the transport and the pre-cracking of larger feedstock molecules, and the zeolite domains, where Brønsted acidic sites promote the catalytic cracking process with a high selectivity for the desired products, including gasoline and propylene [2].

The aim of this research project is to compare various deactivation effects [3-5] in FCC catalysts at different length scales, using 2D and 3D X-ray micro-spectroscopy: mapping poisoning metals will help to assess their role in catalyst aging phenomena and to model the deactivation mechanism in the FCC catalyst particle. In addition, staining with fluorescent probes will help to elucidate the nature and distribution of active sites.

[1] E. T. C. Vogt, B. M. Weckhuysen, Chem. Soc. Rev. 44, 7342–7370 (2015).

[2] J. Scherzer Appl. Catal. 75, 1–32 (1991)

[3] H. S. Cerqueira et al., J. Mol. Catal. A 292, 1–13 (2008)

[4] F. Meirer et al. Sci. Adv. 1 , e1400199 (2015)

[5] S. Kalirai et al., Angew. Chem. Int. Ed. 55, 11134-11138 (2016)


Giannici, F; Canu, G; Chiara, A; Gambino, M; Aliotta, C; Longo, A; Buscaglia, V; Martorana, A

Cation Diffusion and Segregation at the Interface between Samarium-Doped Ceria and LSCF or LSFCu Cathodes Investigated with X-ray Microspectroscopy Journal Article

ACS Applied Materials and Interfaces, 9 (51), pp. 44466-44477, 2017.

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Gambino, M; Tommaso, Di S; Giannici, F; Longo, A; Adamo, C; Labat, F; Martorana, A

Defect interaction and local structural distortions in Mg-doped LaGaO3: A combined experimental and theoretical study Journal Article

Journal of Chemical Physics, 147 (14), 2017.

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Gambino, M; Giannici, F; Longo, A; Tommaso, Di S; Labat, F; Martorana, A

Dopant Clusterization and Oxygen Coordination in Ta-Doped Bismuth Oxide: A Structural and Computational Insight into the Mechanism of Anion Conduction Journal Article

Journal of Physical Chemistry C, 119 (47), pp. 26367-26373, 2015.

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Giannici, F; Canu, G; Gambino, M; Longo, A; Salomé, M; Viviani, M; Martorana, A

Electrode-electrolyte compatibility in solid-oxide fuel cells: Investigation of the LSM-LNC interface with X-ray microspectroscopy Journal Article

Chemistry of Materials, 27 (8), pp. 2763-2766, 2015.

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