(1) At 372 K to 383 K:
When
glycerol is heated with oxalic acid at 373-383K (100–110°C) temperature formic acid
is produced and here probably glycerol act as catalyst.
When
glycerol is heated with oxalic acid at 373-383K (100–110°C) temperature formic acid
is produced as one of the product along with regenerating glycerol.
The entire
reaction proceed via formation of glycerol mono oxalate, decarboxylation and elimination
of H2O.
(2) At 503 K to 553 K:
When glycerol is heated with oxalic
acid at higher temperature nearly 503 K to 553K (230-280°C) oxalic acid and glycerol react with each other to produce
an allyl
alcohol which is also produced via decarboxylation and elimination of H2O.
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