Ruthenium-catalyzed partial hydrogenation of 2-hydroxy-3,5-dinitrobenzoic acid to 5-amino-2-hydroxy-3-nitrobenzoic acid

摘要：

Ruthenium supported on carbon (Ru/C) was found to be highly effective catalyst for partial selective hydrogenation of 2-hydroxy-3,5-dinitrobenzoic acid (HDNA) to 3-amino-2-hydroxy-5-nitrobenzoic acid (3-AHNA). The Ru/C was prepared through sol-gel method and characterized with XRD and TEM which showed that the size of Ru nanoparticles was around 3-5 nm. Ru/C showed high activity and selectivity to 3-AHNA (>99%) under optimized conditions, and the complete hydrogenation to 3-AHNA only took place when the partial hydrogenation completed.The dependence of the selectivity on a variety of reaction parameters was investigated in the present study. The results lend considerable insight into the reaction behavior. The MeOH was chosen as the feasible solvent. The Ru load amount was below 5%. The acceptable temperature range was 15-30 ℃,and hydrogen pressure should be controlled with 0.3-1.0MPa.

关键词： one pot partial selective hydrogenation Ru/C 5-amino-2-hydroxy-3-nitrobenzoic acid

作者: Jie Hou Shaohui Ma Yuhan Li Yonghuan Ma Lianhai Lu

作者单位: State Key Laboratory of Fine Chemicals, Dalian University of Technology DUT,158, Zhongshan Road, Dalian 116012, China

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）