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Hydrogenation – Wikipedia, the free encyclopedia.

…”Metal-free hydrogenation[edit]
For all practical purposes, hydrogenation requires a metal catalyst.

Hydrogenation can, however, proceed from some hydrogen donors without catalysts, illustrative hydrogen donors being diimide and aluminium isopropoxide. Some metal-free catalytic systems have been investigated in academic research. One such system for reduction of ketones consists of tert-butanol and potassium tert-butoxide and very high temperatures.[24] The reaction depicted below describes the hydrogenation of benzophenone:”…

Critical Question is ‘WHY’

Critical Answer is… Metal acts as a CRYSTAL STRUCTURE, something for HYRROGEN TO LATCH UNTO

AND

IN THE PRESENCE OF NO METAL, HOW IS HYDROGENATION POSSIBLE ???

Critical Answer is… ‘HEAT’ DECAY

ALL SMILES HERE

THINK I GOT THE GIST OF IT, THANKS WALTER

:~~~)