Self-assembled monolayers of metalloporphyrin phosphonates on electrochemically modified HOPG

Cabrita, Joana F.; Viana, Ana S.; Mourato, Ana; Montforts, Franz‐Peter; Abrantes, L.M.

doi:10.1016/j.cattod.2011.11.015

Cited by 5 publications

(1 citation statement)

References 41 publications

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“…The band centered at 1454 cm −1 can be assigned to deformation vibration of the methylene group δ(CH 2 ) from HOCH 2 CH 2 NH 3 + species, and the corresponding symmetric and asymmetric vibrations were respectively observed at 2888 cm −1 , v s (CH 2 ), and 2950 cm −1 , v as (CH 2 ) [27]. The shoulder at 1533 cm −1 should be related with O-H bending mode in water [28]. The local peak centered at 1587 cm −1 corresponds to the bending mode of the Pt-NH 3 species [29].…”

Section: Decomposition Of Pt-precursormentioning

confidence: 92%

In Situ Investigations on the Facile Synthesis and Catalytic Performance of CeO2-Pt/Al2O3 Catalyst

Wang

Ren

et al. 2020

Catalysts

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Ceria-modified Pt/Al2O3 catalyst has been commonly prepared by the impregnation of platinum on ceria-modified alumina and widely applied in the chemical industry and automotive industry. The in situ diffuse reflectance infrared Fourier transformed spectroscopy (DRIFTS), and thermogravimetric (TG) analysis techniques were employed to investigate the typical mechanisms of the bis(ethanolammonium)hexahydroxyplatinate(IV) and cerium nitrate decomposition catalyzed by Ptδ+ species for the facile synthesis of CeO2-Pt/Al2O3 catalyst. It was found that Pt4+-catalyzed decomposition of cerium nitrate leads to the higher dispersity of ceria and forming more active oxygen species, on the basis of X-ray diffraction (XRD) and H2 temperature-programmed reduction (H2-TPR) results. The in situ activity measurements were also performed to investigate the reaction mechanisms and the specific activities for the catalytic CO, NO, C3H6 and C3H8 co-oxidation. The results indicate that undesirable N2O by-product is formed by the selective catalytic reduction (SCR) of NO by C3H6 below 350 °C. The cerium addition effectively improves the activity of catalytic oxidation, but exhibits an increased N2O yield, due to the increased reducibility.

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Section: Decomposition Of Pt-precursormentioning

confidence: 92%