Catalytic action by Kaufman George FalkCatalytic action by Kaufman George Falk

Catalytic action

byKaufman George Falk

Paperback | January 8, 2012

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This historic book may have numerous typos, missing text, images, or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1922. Not illustrated. Excerpt: ... Chapter VIII. Contact Catalysis. The term "contact catalysis" has been used at various times to include catalytic reactions in which the substances involved occur in two or more phases. In order to discuss such reactions with as much understanding as possible, it is well to consider the significance of the definitions, the limitations of the phenomena, and their relations to other chemical and physical changes, before speaking of a number of individual reactions. "Contact" reactions or processes are stated as a rule to include chemical reactions which take place in heterogeneous systems. In the present connection, in the consideration of reactions taking place in heterogeneous systems, it will be postulated that the substances taking part in the reaction must be present in two or more phases before the chemical change has occurred. Each substance need not be present in two phases, but substances existing initially in at least two phases must react. They may be present in one, two, or any number of phases after the reaction has occurred, but this is of no direct importance in the classification of the reactions. This view at once excludes reactions in which gases are evolved or precipitates formed in changes taking place in solutions initially homogeneous, etc., and, in fact, all reactions in which the substances are originally present in one phase or as a homogeneous system. Also, for the present, reactions in which radiations of various types are known to play a prominent part will be excluded. This appears to be advisable as the relations of such reactions to those in which radiation influences are not so apparent are not as yet well developed. In view of the extensive experimental work which is in progress along these lines, it may confidently be exp...
Title:Catalytic actionFormat:PaperbackDimensions:64 pages, 9.69 × 7.44 × 0.13 inPublished:January 8, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217692427

ISBN - 13:9780217692427