METHOD FOR CONVERTING SUCROSE TO 5 - HMF USING A LANTHANUM CONTAINING POROUS SILICA CATALYST

摘要

This invention related to method for production of 5-hydroxymethylfurfural from sucrose by using heterogeneous solid acid ICaT-2 catalyst in presence of mixture of solvents. The kinetic parameter study revealed that sucrose conversion and 5 -hydroxy methyl furfural yield are increased with increasing temperature and amount of catalyst. Sucrose conversion of 73 % with 5-hydoxymethyl furfural yield 58 % is achieved after 60 min at 180 °C. Reactions are carried, out in batch mode operation. Catalyst is recycled many times without loss of its activity. Isolation procedure for 5-hydroxymethyl furfural is also discussed. ICaT-2 is prepared by a co-condensation sol-gel route. Hexadecyl amine was dissolved in ethanol and water mixture. Mixture of tetraethyl orthosilicate and 3- (mercaptopropyl)trimethoxysilane were added to the above solution. It is treated with lanthanum chloride (400 mg) for 2 h. The slurry was filtered and treated with trifluromethanesulfonic acid (5.4 mmol) at 30 °C for 2 h. The slurry was filtered and washed with water and dried under vacuum to get the active ICaT-2 catalyst.