| 赵水侠,王来来.钯/膦络合物催化加氢裂解碱木质素[J].分子催化,2012,(6):502-505 |
| 钯/膦络合物催化加氢裂解碱木质素 |
| Hydrogenolysis of alkaline lignin catalyzed by complex palladium/triphenyl phosphine |
| 投稿时间：2012-10-10 修订日期：2012-12-04 |
| DOI： |
| 中文关键词: 氯化钯 醋酸钯 三苯基磷 碱木质素 加氢裂解 |
| 英文关键词:PdCl2 Pd(OAc)2, PPh3 lignin hydrogenolysis |
| 基金项目:甘肃省科技支撑计划项目，中科院“西部之光”人才培养计划联合学者项目 |
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| 中文摘要: |
| 以络合物Pd/P(Ph)3为催化剂，二氯乙烷和乙醇的混合物为溶剂，均相催化加氢裂解木质素，产物分为溶解组份和不溶解组份，反应后溶解组份明显增加；对产物进行粘度测试、热重分析和分子量测定，溶解组份分子量大幅降低；考察反应温度、时间、溶剂、催化剂前体及其用量对反应催化活性的影响，得到优化的反应条件是：木质素0.5000 g，氯化钯0.0809 g，三苯基膦0.2322 g，温度150 oC，时间15 h，溶剂为1,2-二氯乙烷和乙醇的混合物，其体积比为2:1。 |
| 英文摘要: |
| The catalytic hydrogenolysis of alkaline lignin has been carried out by using complex Pd/PPh3. The products were characterized by viscosity measurements and thermal gravimetric analysis. The molecular weight of soluble component reduced obviously. Reaction conditions such as temperature, time, solvent, catalyst precursor, and catalyst loading were optimized. The optimal reaction conditions were as follows, 0.5000g lignin, 0.0809g PdCl2, 0.2322g PPh3, temperature 150 oC, time 15 h, 1,2-dichloroethane and ethanol as solvent, the ratio of volume of 2:1. |
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