Zang Ha
2014
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Journal
Fine chemicals
Abstract
Dimethyl 1,4-cyclohexanedicarboxylate( DMCD) was synthesized by hydrogenation of dimethyl terephthalat( DMT) under mild conditions on nanoscale Ru-Pd / C catalysts. The effects of solvent,reaction temperature,pressure and amount of catalyst have been investigated. Under optimal reaction conditions of 140 ℃,4. 0 MPa pressure,isopropanol 2 000 mL,DMT dosage 1 300 g,and catalyst dosage 65 g,the conversion of DMT and the selectivity to DMCD respectively amount to 99. 8% and 96. 3% in 5 000 mL high pressure reactor. After the Ru-Pd / C catalyst was reused for 22 times under the same conditions,the conversion of DMT and the selectivity to DMCD still remain at 99. 0% and 95. 1%,respectively.