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Advances in Catalysis, Vol. 10 by D.D. Eley, W.G. Frankenburg, V.I. Komarewsky, Paul B. Weisz

By D.D. Eley, W.G. Frankenburg, V.I. Komarewsky, Paul B. Weisz (Eds.)

(from preface)The e-book of this quantity happens within the shadow of the unexpected and unforeseen loss, to the Advances in Catalysis, of 2 of its well-known founders, and, to the realm, of 2 cherished contributors of the neighborhood of scientists, Dr. W. G. Frankenburg and Dr. V. I. Komarewsky. it sort of feels applicable to show again to the Preface of quantity I of the Advances, and to ascertain the perspectives and hopes which the editors expressed one decade in the past about the prestige of the catalytic technological know-how and the position which they visualized for the then new-born publication.In viewing the scope of data relating catalytic phenomena they famous the dominance of empirical approach in catalysis, and expressed the view that ''a technology of catalysis needs to be erected on foundations which nonetheless need to be laid.'' They visualized the Advances as serving as a hyperlink and element of focus of a few of the main major advancements in wisdom of catalysis which then used to be ''scattered all through numerous journals and handbooks, protecting the variety from theoretical physics to descriptions of business plants.''

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I I I I I I 1 1 I FIG. 14. Spectrum obtained during catalyzed oxidation of CO over nickel-nickel oxide. 26 R . P. EISCHENS AND W. A . PLISKIN since it is probably weak compared with the asymmetric band, and the latter is not an intense band. 2 p due to chemisorbed COz . O;r;C=O could be regarded as COS adsorbed through one of the oxygen atoms or as CO adsorbed on a preadsorbed oxygen atom. In the latter case, this intermediate would be similar to those predicted by the Rideal-Eley mechanism. This mechanism is consistent with the reaction illustrated in Fig.

A . PLISKIN led to the conclusion that (3) could be ruled out hut that they could not distinguish between (1) and (2). The spectrum of COz physically adsorbed on Cabosil has also been used to study the question of rotation in physically adsorbed molecules ( 2 4 ) . Figure 27 is due to COn physically adsorbed on Cabosil a t 30" C. 01. -l. -l that would be expected for rotation about a fixed axis a t room temperature. These results indicate that, there is no free rotation of any kind in this case.

For example, Sastri and Viswanathan (17) found that a preadsorbed CO layer enhanced the hydrogen adsorption several fold on cobalt a t 53°C. A similar but smaller effect was found for carbon monoxide-hydrogen adsorption on nickel (18). Part of the enhancement of the hydrogen chemisorptioii could he attributed to complexes of the type OH H \ / C II M 22 R. P. EISCHENS AND W. A . 12. ( A ) Spectrum of CO chemisorbed on copper; ( B ) afher treatment with oxygen. These complexes were postulated as intermediates in the Fischer-Tropsch synthesis (19).

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