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 --
transformations of floor reactivity by means of dependent overlayers on metals / Robert J. Madix --
X-ray absorption tremendous constitution, Mössbauer, and reactivity reports of unsupported cobalt-molybdenum hydrotreating catalysts / Bjerne S. Clausen, Henrik Topsøe, Roberto Candia, and Bruno Lengeler --
Magnetic resonance reports 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 position of oxygen ions within the partial oxidation of hydrocarbons : electron-proton resonance and task measurements / Jack H. Lunsford --
the longer term and influence of quantum mechanical calculations within the description and characterization of zeolites / Paul G. Mezey --
The guidance 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 thoughts 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 photographs of small steel debris in supported catalysts / M.J. Yacaman --
using scanning transmission electron microscopes to review surfaces and small debris / J.M. Cowley --
Atomic quantity imaging of supported catalyst debris via scanning transmission electron microscope / M.M.J. Treacy --
NMR ideas 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 impact of particle dimension at the reactivity of supported palladium / S. Ichikawa, H. Poppa, and M. Boudart.

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G. CASTNER and D. S. ch003 Chevron Research Company, Richmond, CA 94802-0627 A series of supported cobalt catalysts (Co/Al O , Co/K-Al O , Co/SiO , Co/TiO ) have been examined by X-ray photoelectron spectros­ copy (XPS) and microreactor studies. A catalyst treatment system attached to the XPS spectrome­ ter was used to prepare in situ treated (air, H , 1% H S/H ) catalysts for determining the identity, concentration, and reducibility of the cobalt species. At least three different types of cobalt species were present on the calcined catalysts.

32 73 23 17 <5 53 T o t a l CO Conv. 2 g c a t a l y s t . "Weight r a t i o s , HC = t o t a l hydrocarbon product. ^Includes conversion t o both HC and CO2. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1984. ch003 3. CASTNER AND SANTILLI Cobalt Catalysts and CO Hydrogénation 43 r e a c t o r . I n t h i s t a b l e , we d i d not c o r r e c t the c a t a l y s t a c t i v i t i e s f o r d i f f e r e n c e s i n exposed m e t a l l i c Co surface area f o r a number of reasons.

Several d i f f e r e n t cobalt species have been detected on supported cobalt c a t a l y s t s (lf-7); the type, amount, and r e a c t i v i t y of the cobalt species v a r i e d with support, metal loading, and preparation procedures. For t h i s i n v e s t i g a t i o n , the supports were v a r i e d and the other parameters were held constant. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1984. CATALYTIC MATERIALS 40 supports. Since cobalt c a t a l y s t s are known to be good CO hydrogénation c a t a l y s t s (8) and the CO/H2 r e a c t i o n has been shown to be s e n s i t i v e to metal-support i n t e r a c t i o n s (5, 9j 10), we s e l e c t e d CO hydrogenation as our r e a c t i o n probe.

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