Effect of Methanol Additives on the Heats of Adsorption
of Hydrogen on Porous Nickel from AqueousAlkaline Media

M. V. Lukin, A. V. Barbov, and M. V. Ulitin

Ivanovo State Academy of Chemical Technology, Ivanovo, Russia

Received October 21, 2002

Abstract—Adsorption calorimetry was used to determine the heat of adsorption of hydrogen from methanol–
water–sodium hydroxide solutions on porous nickel. The presence of methanol in the solvent substantially
influences the adsorption of hydrogen and the dependence of the heat of adsorption on the coverage, an effect
that can be attributed to the redistribution between the separate forms of the adsorbate associated with changes
in the structural characteristics, solvent basicity, and specific interactions between alcohol molecules and the
porous-nickel surface.

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