SRCosmos:

Order of appearence	Full citation	SRCosmos Link
1	Burch R, (2004). Knowledge and know-how in emission control for mobile applications, Catal. Rev., 46, 271-333.
2	Captain DK, Amiridis MD, (1999). In situ FTIR studies of the selective catalytic reduction of NO by C3H6 over Pt/Al2O3, J. Catal. 184, 377-389.
3	Davydov AA, (1991). The spectroscopic study of the synthesis of isocyanate complexes fromNO and CO on catalysts containing transition metals, J. Appl. Spect., 54 287-291.
4	Kaspar J, Fornasiero P, Hickey N, (2003). Automotive catalytic converters: current status and some perspectives, Catal. Today, 77, 419-449.
5	Konsolakis M, Yentekakis IV, (2007) NO reduction by propene or CO over alkali-promoted Pd/YSZ catalysts, J. Hazard. Mater., 149, 619-624.
6	Konsolakis M, Yentekakis IV, (2001a). Strong promotional effects of Li, K, Rd and Cs on the Pt-catalysed reduction of NO by Propene, Appl. Catal. B 29, 103-113.
7	Konsolakis M, Yentekakis IV, (2001b). The reduction of the NO by Propene over Ba promoted Pt/γ-Al2O3 catalyst, J. Catal. 198, 142-150.
8	Konsolakis M, Yentekakis IV, Palermo A, Lambert RM, (2001) Optimal promotion by Rubidium of the CO+NO reaction over Pt/γ-Al2O3 catalysts, Appl. Catal. B, 33, 293-302.
9	Koukiou S, Konsolakis M, Lambert RM, Yentekakis IV, (2007). Spectroscopic evidence for the mode of action of alkali promoters in Pt-catalyzed de-NOx chemistry, Appl. Cat. B, 76, 101-106.
10	Lang ND, Holloway S, Norskov JK, (1985). Electrostatic adsorbate-adsorbate interactions: the poisoning and promoting of the molecular adsorption reaction, Surf. Sci., 150, 24-38.
11	Primet M, (1984). Electronic transfer and ligand effects in the infrared spectra of adsorbed carbon monoxide, J. Catal., 88 273-282.
12	Sadykov VA, Lunin VV, Matyshak VA, Paukshtis EA, Rozovskii AY, Bulganov NN, Ross JRH, (2003). The reaction mechanism of selective catalytic reduction of nitrogen oxides by hydrocarbons in excess oxygen: intermediates, their reactivity, and routes of transformation, Kin.Cat., 44, 379-400.
13	Shimizu K, Kawabata H, Satsuma A, Hattori T, (1999). Role of acetate and nitrates in the selective catalytic reduction of NO by Propene over alumina catalyst as investigated by FTIR, J. Phys. Chem. B, 103, 5240-5245.
14	Twigg MV, (2007). Progress and future challenges in controlling automotive exhaust gas emissions, Appl. Catal. B, 70, 2-15.
15	Yentekakis IV, Konsolakis M, Lambert RM, Macleod N, Nalbantian L, (1999). Extraordinary effective promotion by sodium in emission control catalysis: NO reduction by Propene over Na-promoted Pt/γ-Al2O3, Appl. Catal. B 22, 123-133.
16	Yentekakis IV, Lambert RM, Tikhov MS, Konsolakis M, Kiousis V, (1998). Promotion by sodium in emission control catalysis: A kinetic and spectroscopic study of the Pd-catalyzed reduction of NO by propene, J. Catal. 176, 82-92.
17	Yu Y, He H, Feng Q, (2003). Novel enolic surface species formed during partial oxidation of CH3CHO, C2H5OH, and C3H6 on Ag/Al2O3: An in situ DRIFTS study, J. Phys. Chem. B, 107 13090-13092.

Keywords
Abstract	The reactivity of species formed on the surface of un-promoted and sodium promoted Pt catalysts supported on γ-Al2O3 was investigated by the transient response of IR spectra under the cycle: NO>He>C3H6>NO. It was found that NO adsorption on the unpromoted Pt/Al2O3 catalyst results mainly in the formation of small amounts of nitrate species, which are relatively inactive towards C3H6, leading to the formation of limited amounts of formates, acetates and cyanide compounds. The latter species are very stable towards NO, indicating that carboxylate and cyanide species should be considered as spectator species; the inactivity of such species is consistent to the low activity of un-promoted Pt/γ-Al2O3 catalyst during the NO reduction by propene. In complete contrast, NO interaction with the surface of Na-promoted catalysts results in the formation of nitro/nitrite as well as nitrosyl species, which are highly active towards propene, leading to the formation of enolic species (R-CH=C-O), organic compounds (CxHyNOz), isocyanates (NCO) and carbonyl (CO) species. Among these species isocyanates are very active towards NO, leading to the formation of reaction products. The present results strongly indicate that the excellent catalytic behaviour of sodium modified Pt/Al2O3 catalysts during the NO reduction by propene, can be attributed to the pronounced effect of alkalis on the NO chemisorption bond, which in turn favours the formation of active intermediates such as isocyanates.
Full text	Full Text in PDF (286 KB)
Source link
Included Refrences	17 References (List...)
Cited by other Articles	0 Citations (List...)

Name	Affiliation	Home page	e-mail	Total pubs
Konsolakis M	Laboratory of Physical Chemistry and Chemical Processes, Department of Sciences, Technical University of Crete, 73100 Chania, Crete, Greece		mkonsol@science.tuc.gr	8
Matsouka V	Laboratory of Physical Chemistry and Chemical processes, Department of Sciences, Technical University of Crete, 73100 Chania, Crete, GREECE			4
Yentekakis IV	Laboratory of Physical Chemistry and Chemical Processes, Dept of Sciences, Technical University of Crete, 73 100 Chania, Crete, Greece.		yyentek@science.tuc.gr	11