Catalytic Materials: Relationship Between Structure and by Thaddeus E., Jr., et al., eds. Whyte

By Thaddeus E., Jr., et al., eds. Whyte

content material: Thermal decomposition of iron pentacarbonyl on titania : genesis of Fe/TiO₂ catalysts / J. Phillips and J.A. Dumesic --
Secondary ion mass spectrometry of the ethylene/Ru(001) interplay / L.L. Lauderback and W.N. Delgass --
X-ray photoelectron spectroscopy of cobalt catalysts : correlation with carbon monoxide hydrogenation actions / D.G. Castner and D.S. Santilli --
ameliorations of floor reactivity through based overlayers on metals / Robert J. Madix --
X-ray absorption positive constitution, Mössbauer, and reactivity stories of unsupported cobalt-molybdenum hydrotreating catalysts / Bjerne S. Clausen, Henrik Topsøe, Roberto Candia, and Bruno Lengeler --
Magnetic resonance experiences of steel deposition on hydrotreating catalysts and elimination with heteropolyacids / B.G. Silbernagel, R.R. Mohan, and G.H. Singhal --
functions of high-resolution ¹³C-NMR and magic-angle spinning NMR to reactions on zeolites and oxides / Eric G. Derouane and Janos B. Nagy --
The function of oxygen ions within the partial oxidation of hydrocarbons : electron-proton resonance and job measurements / Jack H. Lunsford --
the long run and impression of quantum mechanical calculations within the description and characterization of zeolites / Paul G. Mezey --
The education and characterization of aluminum-deficient zeolites / Julius Scherzer --
Aluminum distributions in zeolites / Alan W. Peters --
components affecting the synthesis of pentasil zeolites / Zelimir Gabelica, Eric G. Derouane, and Niels Blom --
mixed actual concepts within the characterization of zeolite ZSM-5 and ZSM-11 acidity and basicity / Jacques C. Vedrine, Aline Auroux, and Gisèle Coudurier --
Structure-selectivity dating in xylene isomerization and selective toluene disproportionation / D.H. Olson and W.O. Haag --
Analytical electron microscopy of heterogeneous catalyst debris / C.E. Lyman --
Single-particle diffraction, weak-beam dark-field, and topographic photos of small metal debris in supported catalysts / M.J. Yacaman --
using scanning transmission electron microscopes to check surfaces and small debris / J.M. Cowley --
Atomic quantity imaging of supported catalyst debris via scanning transmission electron microscope / M.M.J. Treacy --
NMR suggestions for learning platinum catalysts / Harold T. Stokes --
Photoacoustic spectroscopy of catalyst surfaces / E.M. Eyring, S.M. Riseman, and F.E. Massoth --
IR photothermal beam deflection spectroscopy of surfaces / M.J.D. Low, C. Morterra, A.G. Severdia, and J.M.D. Tascon --
Tunneling spectroscopy of organometallic molecules / William C. Kaska, Paul ok. Hansma, Atiye Bayman, and Richard Kroeker --
The impression of particle dimension at the reactivity of supported palladium / S. Ichikawa, H. Poppa, and M. Boudart.

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I n order to avoid the l o s s of s i g n a l i n t e n s i t y , we t r e a t e d the C 0 / A I 2 O 3 c a t a l y s t i n 1% H S/H , which allowed the cobalt oxides to react at lower temperatures. 6eV, i n d i c a t i n g cobalt s u l f i d e was formed. Thus on the c a l c i n e d C 0 / A I 2 O 3 there were at l e a s t three cobalt species: one that reduced at 480°C i n H , one that s u l d i f e d at 480°C i n H S/H , and one that d i d not reduce or s u l f i d e at 480°C. Three cobalt oxide species have a l s o been detected on c a l ­ cined C 0 / A I 0 O 3 c a t a l y s t s i n other studies (1> 6j J).

13. 14. 15. 16. 17. 18. 19. ; Sichtermann, W. K. Anal. Chem. 1978, 50, 1180. ; Muller, Κ. ; Beckmann, P. Appl. Phys. 1978, 16, 367. ; Muller, Κ. ; Schemmer, M. Surf. Sci. 1979, 84, 701. Muller, Κ. ; Benninghoven, A. Surf. Sci. 1979, 325. Colton, R. ; Murda, J. ; Wyatt, J. J. Surf. Sci. 1979, 84, 235. ; Cooks, R. G. J. Am. Chem. Soc. 1978, 100, 5615. Ray, R. ; Unger, S. ; Cooks, R. G. J. Am. Chem. Soc. 1978, 101, 501. Delgass, W. ; Lauderback, L. ; Taylor, D. G. "SIMS of Reactive Surfaces"; Springer-Verlag Series in Chemical Physics 20, 1982.

The RuC2H i o n was not i n v e s t i g a t e d because o f i s o t o p e i n t e r f e r e n c e w i t h RuC^. I n order t o o b t a i n adequate s i g n a l t o n o i s e l e v e l s f o r the l e s s intense i o n s , the primary i o n current d e n s i t y was increased t o 1 x 1 0 " ^ amps/cm^ i n these experiments. This c u r r e n t d e n s i t y corresponds to a t o t a l primary i o n dose of 2 χ 1()13 ions/cm^ during the course of each experiment. The r e ­ s u l t i n g temperature dependences of the v a r i o u s ions are shown i n the lower h a l f of F i g u r e 10, w h i l e the p r e v i o u s l y described t h e r ­ mal d e s o r p t i o n s p e c t r a a r e reproduced i n the upper h a l f o f F i g u r e 10 f o r comparison.

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