Download e-book for kindle: Material Concepts in Surface Reactivity and Catalysis by Henry Wise

By Henry Wise

ISBN-10: 0127599401

ISBN-13: 9780127599403

Valuable textual content specializes in actual and chemical houses of the outside in a reacting approach. themes include crystallite morphology, interface equilibria, adsorption and desorption kinetics, binding states and adsorbate constructions, digital homes of nonmetal catalysts, and extra. For study scientists and scholars of fabrics technological know-how, solid-state chemistry, and catalysis.

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5 Heat of adsorption of sulfur on silver surfaces. [Reference state — ^ ( g ) . 72 (e) 2 1 4 Reference" "(a) J. Benard, J. Oudar, and F. Cabane-Brouty, Surf. Sci. 3, 359 (1965); (b) P. Werlen-Ruze and J. Oudar, J. Cryst. Growth 9, 45 (1971); (c) Y. Berthier and J. Oudar, C. R. Rend. Seances Acad. Sci. 269, 1149 (1967); (d) M. Perdereau and J. Oudar, Surf. Sci. 20, 80 (1970); (e) Y. , Surf. Sci. 36, 225 (1973). 4 Heat of Adsorption of Sulfur on Silver Surfaces at One-half Saturation Coverage" Crystal face Heat of adsorption (kcal) Per mol H S Per 1 / 2 mol % (111) -6 -27 (100) -8 -29 (110) -12 -33 2 "From Benard et al.

In the case of Pd-Au the surface composition is identical to that of the bulk (Fig. 7a), as would be expected on the basis of the small difference in surface free energy between the two metal components. However, for Pd-Ag considerable surface enrichment with Ag is observed (Fig. 7b), far in excess of that predicted by the difference in surface free energies. The experimental results were analyzed in terms of the regular solution monolayer model [Eq. 18]. 21]. Convergence to the bulk composition was shown to occur within less than three to five atomic layers.

45, 377 (1974). 20 S. Ono and S. Kondo, in Handbuch der Physik (S. ), Vol. 10, p. 134. Springer-Verlag, Berlin, 1960. 21 S. Ono, J. Phys. Soc. Jpn. 6, 10 (1951). 22 B. J. Pines, / . Phys. Soc. USSR 3, 309 (1940). 23 D. A. Mervyn, R. J. Baird, and P. Wynblatt, Surf. Sci. 82, 79 (1979). 24 T. Gela, in Mechanical Design and Systems Handbook (H. A. ). McGraw-Hill, New York, 1964. Chapter Three Interface Equilibria A. Adsorption Isotherms and Isosteres As shown in the preceding chapter, the Gibbs adsorption equa­ tion [Eq.

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Material Concepts in Surface Reactivity and Catalysis by Henry Wise

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