@article {4352,
	title = {A comparison of bulk metal nitride catalysts for pyridine hydrodenitrogenation},
	journal = {Catalysis Letters},
	volume = {52},
	number = {1-2},
	year = {1998},
	note = {ISI Document Delivery No.: ZW621Times Cited: 29Cited Reference Count: 26},
	pages = {113-119},
	type = {Article},
	abstract = {A comparison of various group IV-VIII bulk metal nitride catalysts identified Co4N and Fe3N as having higher pyridine hydrodenitrogenation activity per unit area than Mo2N. Formation of the metal nitrides was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy, and all the nitrides were prepared from metal oxide precursors using the same temperature-programmed reaction technique. In general, the specific activity of the metal nitrides decreased with increased hear of formation of the metal nitride.},
	keywords = {CATALYST, HYDRODENITROGENATION, HYDRODESULFURIZATION, metal nitride, MO2N, PYRIDINE, QUINOLINE, SUPPORTED MOLYBDENUM NITRIDE, SURFACE-AREA},
	isbn = {1011-372X},
	url = {<Go to ISI>://000074430100020},
	author = {Milad, I. K. and Smith, K. J. and Wong, P. C. and Mitchell, K. A. R.}
}
@article {4331,
	title = {X-ray photoelectron spectroscopy studies of the reduction of MoO3 thin films by NH3},
	journal = {Applied Surface Science},
	volume = {136},
	number = {1-2},
	year = {1998},
	note = {ISI Document Delivery No.: 133ZGTimes Cited: 7Cited Reference Count: 33},
	month = {Oct},
	pages = {147-158},
	type = {Article},
	abstract = {X-ray photoelectron spectroscopy (XPS) has been used to gain insight into surface reaction pathways associated with the nitridation by NH3 of MoO3 thin films grown on metallic substrates. The samples formed can be seen as model hydrodenitrogenation (HDN) catalysts, but the more-controlled surface morphology allows spectral features to be studied in the absence of charging effects that can interfere with such measurements on high-area samples. Observed core level and valence spectra are consistent with the MoO3 being reduced, but the degree of reduction depends on the reaction temperature. Heating to 350 degrees C indicates some conversion to Mo(+5) and {\textquoteright}O-rich{\textquoteright} Mo(+4) components, while heating to 450 degrees C and to 700 degrees C give respectively a {\textquoteright}N-rich{\textquoteright} Mo(+4) form and a Mo(+3) oxynitride as the dominant components. It is concluded that the nitridation of MoO3 by NH3 involves initial hydrogenation, with subsequent elimination of water, and the effective replacement of O by N as the reduction continues. Surface compositions determined here during the nitridation process contrast with conclusions reached previously for the evolution of bulk phases as deduced by X-ray diffraction. (C) 1998 Elsevier Science B.V. All rights reserved.},
	keywords = {ADSORPTION, ammonia, Auger, CATALYSTS, DECOMPOSITION, HYDRODENITROGENATION, MOLYBDENUM NITRIDES, MOO3, NH3, REDUCTION, SURFACE-AREA, X-ray photoelectron spectroscopy, XPS},
	isbn = {0169-4332},
	url = {<Go to ISI>://000076717000022},
	author = {Leung, Y. L. and Wong, P. C. and Mitchell, K. A. R. and Smith, K. J.}
}
