@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.}
}
@article {6761,
	title = {THEORETICAL-STUDY OF HYDRAZOIC ACID AND METHYL AZIDE},
	journal = {Chemical Physics Letters},
	volume = {175},
	number = {5},
	year = {1990},
	note = {ISI Document Delivery No.: EU257Times Cited: 3Cited Reference Count: 28},
	month = {Dec},
	pages = {525-530},
	type = {Article},
	abstract = {State-of-the-art ab initio computations have been performed on the ground state of HN3 and CH3N3. The methods employed include Roothaan-Hartree-Fock molecular orbitals, single- and double-excitation configuration interaction, as well as modified-coupled-pair-functional approximations. The basis sets chosen for this study are the highly efficient atomic natural orbitals. The variational energies obtained are lower than previous studies and the dipole moments agree with experiment. The agreement between computed and observed nuclear quadrupole coupling constants is satisfactory, especially for N-alpha. It is suggested that improved agreement for the other N atoms requires vibrational averaging and possibly the use of the finite-field method.},
	keywords = {1ST-ROW, ABINITIO, CONSTANTS, GROUND-STATE, MICROWAVE-SPECTRUM, MOMENT, N-14, NH3, NITROGEN, QUADRUPOLE HYPERFINE-STRUCTURE},
	isbn = {0009-2614},
	url = {<Go to ISI>://A1990EU25700020},
	author = {Chong, D. P.}
}
