what phenomenon takes place during catalytic activity of Pd and Pt during hydrogenation ? in some books it is given as absorption,in others adsorption .some say that it is occlusion . please help me
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$\begingroup$ Occlusion is same as "surface adsorption". And catalytic hydrogenation is surface phenomenon... $\endgroup$– ZenixCommented Apr 30, 2020 at 16:40
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$\begingroup$ but Sir, during formation of hydrides by d block elements ,hydrogen occupies intersticial spaces ? (i think so) $\endgroup$– DVSCommented Apr 30, 2020 at 17:04
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$\begingroup$ @DVS but the molecules that are being hydrogenated usually can't access the interstitial spaces through a standard surface. $\endgroup$– BeerhunterCommented May 6, 2020 at 18:11
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