Citation:
Liu Pu, Liu Ye, Yin Yuanqi. Selective Hydrogenation of Maleic Anhydride to Succinic Anhydride on PdCl2/PPh3[J]. Chinese Journal of Applied Chemistry,
;1999, 16(1): 58-61.
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A noval preparation method of succinic anhydride with high selectivity and conversion by homogeneous hydrogenation of maleic anhydirde has been successfully developed. Results show that among catalysts and ligands studied PdCl2 is the best catalyst and PPh3 is the most suitable ligand. The effects of n(PPh3)/n (Pd), reaction temperature, hydorgen pressure, catalyst concentration and maleic concentration have been investigated. Under the typical reaction conditions: PdCl2=1.25×10-3 mol/L, n(MA)/n(Pd)=2000, n(PPh3)/n(Pd)=4 in 8 mL ethylene glycoldimethyl ether at 373~393 K and hydrogen pressure of 2.5 MPa for 1 hour more, the conversion of meleic anhydride is 90% and the selectivity of succinic anhydride is 100%.
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