INQUIMAE   12526
INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
artículos
Título:
Temperature-dependent Reactions of Phthalic Acid on Ag(100)
Autor/es:
M. FRANKE; F. MARCHINI; L. ZHANG; Q. TARIQ; N. TSUD; M. VOROKHTA; M. VONDRACEK; K. PRINCE; M. ROCKERT; H-P STEINRUECK; F. J. WILLIAMS; O. LYTKEN
Revista:
JOURNAL OF PHYSICAL CHEMISTRY C
Editorial:
AMER CHEMICAL SOC
Referencias:
Lugar: Washington; Año: 2015 vol. 119 p. 23580 - 23580
ISSN:
1932-7447
Resumen:
We have investigated the adsorption and temperature-dependentreactions of phthalic acid on Ag(100), in the temperature range 110−700 K, bysynchrotron radiation X-ray photoelectron spectrocopy (SR-XPS), temperature programmed desorption (TPD) and near-edge X-ray absorption fine structure(NEXAFS). Phthalic acid adsorbs intact at 110 K, but decomposes to phthalicanhydride and polyanhdride at 150 K. When heated further, phthalic anhydride desorbs at 250 K, leaving only polyanhydride on the surface, which at 350 K decomposes into a carboxylate, through desorption of phthalic anhydride and water. The carboxylate is stable until 500 K, after which it decomposes, through desorption of CO2 and benzene, into carbon; the latter diffuses into the bulk, leaving only a little carbon on the Ag(100) surface at 600 K.