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Book Review The Theory of Adsorption and Catalysis. Physical Chemistry A Series of Monographs. By A

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Each chapter is clearly written in the manner of an essay
review and is provided with a good selection of references
and graphic illustrations. There are no extensive historical
introductions, but emphasis is placed on modern developments. Since a great variety of topics are covered, the reader
may treat the work selectively. It is, infact, more a collection
of excellent individual articles, rather than a coherent
entity. The thoroughness and conciseness with which the
individual chapters are written provide an excellent opportunity for readers, even those not directly concerned with
this field, to gain an idea of the broad outlines of the rapidly
developing radical chemistry. The book is indispensable
for the library of any institute of chemistry or physical
Karl Dimrofh [NB 942 JE]
Phase Equilibria, Basic Principles, Applications, Experimental Techniques. By A . Reisman. Academic Press,
New York-London 1970. xi, 541 pp., bound $27.50.
Until the mid-I950s, interest in phase equilibria was
almost exclusive to metallurgists. Nowadays it calls to
mind topics such as semiconductors, nuclear technology,
space technology, zone melting, chemical transport reactions, and crystal growing. Whereas the metallurgist was
mainly concerned with equilibria of condensed phases
at normal pressure, both the gas phase and the influence of
high pressures are nowadays becoming increasingly important.
This was one reason why the author wrote the present
book. Another reason was that the existing books dealing
with this topic use a phenomenological approach and
mainly graphical representation at the expense of a more
detailed mathematical treatment. New paths in this connection have been opened up by computers.
The thermodynamic basis is first elaborated and tested
on the equilibria of one-component systems. In the
subsequent binary and pseudobinary systems, the author
considers only ideal model systems and deliberately omits
such concepts as fugacity or activity. A systematic mathematical treatment of these ideal systems provides an understanding of the laws to which the observed types of phase
equilibria are subject. In particular, numerous examples
are given to show quantitatively the influence of parameters
such as the melting points and heats of fusion of the pure
components, dissociation or association in melts or solids,
external pressure, and the vapor pressures of the components. The calculated model systems, for which graphs are
constructed, are compared with examples from the literature. Even systems as unusual as those that exhibit continuous solid solution formation with a melting minimum are
calculated on this basis. A few chapters dealing with
ternary systems are then included. The picture is rounded
off by examples of applications, such as purification by
distillation or zone melting and chemical transport reactions.
The last, less successful, chapter deals with experimental
methods. This discussion totally ignores some important
methods, such as EMF or calorimetric measurements.
Other aspects, such as the operation of a thermocouple,
are discussed in too much detail.
In general, the book should facilitate the approach to
the complex field of phase equilibria, and a great help
here is the fact that it has been restricted to model systems.
Angew. Chem. internal. Edit.
Vol. 10 (1971) 1 N o . 6
It is thus suitable both for the advanced student and
for the practical worker who wish to forge ahead to
the fundamental rules of phase equilibria.
Hans Rau
[NB 947 IE]
The Theory of Adsorption and Catalysis. Physical Chemistry, A Series of Monographs. By A . Clark. Academic
Press, New York - London 1970. 1st ed., x, 418 pp.,
bound DM 19.50.
The book presents a survey of the present position in
the theoretical treatment of adsorption and catalysis. It
is in the nature of things that theories based on models
occupy the foreground in the first part, which is devoted
to adsorption, whereas empirical relations receive more
attention in the second part, which deals with catalysis.
A brief outline of the thermodynamics of adsorption
serves as an introduction. This is followed by the discussion of localized and non-localized adsorption on
homogeneous and heterogeneous surfaces for systems
without interaction between neighboring particles and
for systemswith such an interaction. Adsorption isotherms,
heats of adsorption, entropies of adsorption, etc., are
derived for these various adsorption systems with the
aid of statistical thermodynamics.
One chapter each is devoted to the adsorption forces
in physisorption, in chemisorption on metals, and in
chemisorption on semiconductors. The dispersion and
repulsion forces are discussed, as well as the analogy
between chemisorption bonding and chemical bonding
and the models for a quantum-mechanical treatment of
chemisorption. The description of chemisorption on
semiconductors is based mainly on the Hauffe and the
Wolkenstein views. The first part of the book ends with
a chapter on the kinetics of chemisorption.
The second part is introduced by an examination of the
relation between adsorption and catalysis. The kinetics
of heterogeneous catalytic reactions is considered separately for reactions in which diffusion plays no part
and for diffusion-controlled reactions.
The “geometric factor” is discussed at length in connection
with the effects of lattice structure, defects, and particle
size on catalytic activity. The “electronic factor” is
discussed for metals and semiconductors. A final chapter
deals with the adsorbed species and their role in heterogeneous catalysis.
The extensive bibliographies cite references up to 1969.
This well-written summary of present-day knowledge
will be a welcome aid to anyone who is concerned with
the fundamentals of adsorpticln and catalysis.
Gerd Wedler [NB 951 IE]
Computer Programs for Chemistry. By D. F. Detar. W. A.
Benjamin Jnc., New York 1968. 1st ed., xx, 207 pp.,
bound $14.15.
The evaluation of experimental results or the calculation
of molecular properties with the aid of computer programs
is becoming increasingly important in chemistry. Whenever
the considerations are based on a complicated calculation,
it is advisable to use programs devised by personnel
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