We
report a new, simple, and efficient procedure for the direct
production of furfural from fructose using Fe2(SO4)3·xH2O through the distillation
of the product under atmospheric pressure. The reaction is solvent-free;
the only reagents used are fructose and catalyst, which is used in
40% molar quantity. The optimal reaction temperature is 170 °C.
With the optimized reaction conditions, fructose conversion is 92%
after 90 min with a furfural selectivity of 85%. The only byproducts
are water and formaldehyde. Furfural can be extracted in ethyl acetate,
while formaldehyde is collected at the end of the apparatus in water.
This methodology offers a new opportunity to synthesize furfural using
nontoxic reagents with a simple and safe apparatus.