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With sulfuric acid; dihydrogen peroxide In water at 49.84℃; for 3h;
2.3.3 Selective oxidation with H2O2 of furfural to C4 diacids
The reaction was carried out in batchwise mode in a glass flask reactor (50 mL) with three necks for the thermocouple, for a condenser and for sampling through a septum. The second neck was also used for addition of reactants. The required amounts of catalyst and of a 30% H2O2/H2O solution (Sigma-Aldrich) were incorporated into the reactor that was heated to the reaction temperature by immersion in an oil bath. The reaction started when a known amount of a furfural dissolved in water, previously heated at the reaction temperature, was poured into the reactor. This mixture was vigorously agitated at 800 rpm. Different aliquots were sampled at different reaction time to determine the concentration of organic compounds by HPLC and the H2O2 concentration by iodometry. Further details of the analyses are given in Supplementary data section.
2.3.3 Selective oxidation with H2O2 of furfural to C4 diacids
The reaction was carried out in batchwise mode in a glass flask reactor (50 mL) with three necks for the thermocouple, for a condenser and for sampling through a septum. The second neck was also used for addition of reactants. The required amounts of catalyst and of a 30% H2O2/H2O solution (Sigma-Aldrich) were incorporated into the reactor that was heated to the reaction temperature by immersion in an oil bath. The reaction started when a known amount of a furfural dissolved in water, previously heated at the reaction temperature, was poured into the reactor. This mixture was vigorously agitated at 800 rpm. Different aliquots were sampled at different reaction time to determine the concentration of organic compounds by HPLC and the H2O2 concentration by iodometry. Further details of the analyses are given in Supplementary data section.
1: 7.3%
2: 12.2%
3: 16.9%
With dihydrogen peroxide In water at 49.84℃; for 3h;
2.3.3 Selective oxidation with H2O2 of furfural to C4 diacids
The reaction was carried out in batchwise mode in a glass flask reactor (50 mL) with three necks for the thermocouple, for a condenser and for sampling through a septum. The second neck was also used for addition of reactants. The required amounts of catalyst and of a 30% H2O2/H2O solution (Sigma-Aldrich) were incorporated into the reactor that was heated to the reaction temperature by immersion in an oil bath. The reaction started when a known amount of a furfural dissolved in water, previously heated at the reaction temperature, was poured into the reactor. This mixture was vigorously agitated at 800 rpm. Different aliquots were sampled at different reaction time to determine the concentration of organic compounds by HPLC and the H2O2 concentration by iodometry. Further details of the analyses are given in Supplementary data section.
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