Hydrogen sensitivity of MCP ring opening on Ir/Al2O3 and that of n-hexane transformation on Pt black have been investigated. Comparison of the results on O2–H2-treated and ‘carbon’-precovered catalysts confirms that in the interpretation of the hydrogen effect on product distribution one has to regard the steric/electronic effect of trapped hydrocarbons on the surface metal atoms.
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Antal Sárkány (1989) studied this question.
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