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Surface Properties and Catalysis by Non-Metals (Hardcover, 1983 ed.)
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Surface Properties and Catalysis by Non-Metals (Hardcover, 1983 ed.)
Series: NATO Science Series C, 105
Expected to ship within 10 - 15 working days
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In the field of heterogeneous catalysis. it is convenient to
distinguish. in a perfectly unjustified and over..simplified way.
bet: leen metal catalysts. 2nd the other catalysts. The fj.J"st are
easy to define: they are those in which a reduced metal is the
active phase. It is thus easy to circumscribe. by exclusion, the
other class namely the "non-metals." We have adopted this
definition for the sake of our colleagues working on catalysis by
metals, and to avoid a lengthy title like "sm' face pl"operties and
catalysts by transi tion metal oxides. sulftdes, carbides,
nitriles, etc. Defined in this manner, non-metal catalysts
represented, in 1980, 84 wt. % of the industrial heterogeneous
catalysts. To be more specific, this proportion corresponds to
catalysts which, under the working conditions in the industrial
?lant. contain their catalytically active metallic elements in a
non-reduced state. It should however be recalled that most metal
catalysts are supported on oxides, which, often, repl'esent over
90% (sometimes 99.4% in the case of the platinum reforming
catalysts) of the total weight."
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