引用本文:
刘蒲, 刘晔, 殷元骐. 钯-三苯膦催化体系选择氢化顺酐制备琥珀酸酐[J]. 应用化学,
1999, 16(1): 58-61.
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.
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.
钯-三苯膦催化体系选择氢化顺酐制备琥珀酸酐
摘要:
开发了一种由顺酐直接加氢高选择性及高转化率制备琥珀酸酐的新方法,研究结果表明:钯-三苯基膦催化体系对顺酐加氢具有较高的反应活性.在所考察的反应条件下,此催化剂体系对琥珀酸酐的选择性为100%,无其他副产物生成.并考察了三苯基膦/钯摩尔比,反应温度,氢气压力,催化剂和顺酐浓度对顺酐催化加氢生成琥珀酸酐的影响.在反应条件为PdCl2=1.25×10-3 mol/L,n (顺酐)/n(Pd)≤2000,n (三苯基膦)/n (Pd)=4,T=373~393 K,2.5 MPa的氢压下于乙二醇二甲醚溶剂中反应1 h以上,可使顺酐的转化率大于90%.
English
Selective Hydrogenation of Maleic Anhydride to Succinic Anhydride on PdCl2/PPh3
Abstract:
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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Key words:
- maleic anhydride
- / homogeneous hydrogenation
- / PdCl2 catalyst
- / triphenylphosphine
- / succinic anhydride
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