CYCLOHEXANE-1 2 4 5-TETRACARBOXYLIC ACI CAS15383-49-0 SUPPLY CAS NO.15383-49-0

34.3 g of commercially available pyromellitic dianhydride (GC analysis purity: 98.2percent) was charged into 500 mL high pressure kettle, meanwhile 250 mL of deionized water and 2.5 g of a 5 wtpercent Pd-C catalyst as a precious metal catalyst were added, then the hydrogen gas was introduced into the high pressure kettle (autoclave) and the hydrogen pressure was controlled at 2MPa, the temperature was controlled at 33 ° C ± 1 ° C, and carried the reaction for 2h. [0024] And then cooled to room temperature (15 ° C ~ 25 ° C, the same below) to discharge the filter, the filter cake separated Pd-C catalyst, this catalyst was placed in air overnight after that it can be recycled for the next batch of catalytic hydrogenation reaction.

Synonyms

1,2,4,5-cyclohexanetetracarboxylic acid; 1,2,4,5-Cyclohexanetetracarboxylic Acid >1,2,4,5-CyclohexanetetracarboxylicAci; CYCLOHEXANE-1 2 4 5-TETRACARBOXYLIC ACI&; Cyclohexane-1,2,4,5-tetracarboxylic acid; cyclohexane-1,2,4,5-tetracarboxylic acid, mixture of cis and trans;