石油化工2024，Vol.53Issue(7)：940-946,7.DOI:10.3969/j.issn.1000-8144.2024.07.004
Mn对Ru/SiO2催化2,5-己二酮与伯胺合成N-取代-2,5-二甲基吡咯烷的促进作用
Promotion effect of Mn on Ru/SiO2 catalyst for the synthesis of N-substituted 2,5-dimethylpyrrolidines from 2,5-hexadione and primary amines
摘要
Abstract
Mn-doped Ru/SiO2 catalysts were prepared by a co-impregnation method and used for the synthesis of N-substituted 2,5-dimethylpyrrolidines through a Paal-Knorr/hydrogenation cascade reaction of 2,5-hexadione with primary amines.The effects of Mn on the structure and properties of the catalysts were investigated using XRD,TEM,NH3-TPD,and XPS techniques.The stability and applicability of the catalysts were also examined.The results show that Mn doping improves the dispersion of Ru nanoparticles and increases the acidic sites of the catalysts,thereby enhancing their catalytic performance.When the Ru/Mn molar ratio is 1:2,the catalysts exhibit the highest catalytic activity,achieving 100%conversion of 2,5-hexadione and 100%yield of N-butyl-2,5-dimethylpyrrolidine in H2O solvent at 130℃ and 3 MPa hydrogen pressure after 90 min.The catalyst maintains high activity after nine cycles of reuse and shows good universality.This work provides a new approach for the green synthesis of N-substituted pyrrolidines.关键词
2,5-己二酮/N-取代吡咯烷/RuMn/SiO2催化剂/级联反应/生物质Key words
2,5-hexadione/N-substituted pyrrolidine/RuMn/SiO2 catalyst/cascade reaction/biomass分类
化学化工引用本文复制引用
胡锦波,钟齐锋,陈诗怡,吴海梅,刘迎新..Mn对Ru/SiO2催化2,5-己二酮与伯胺合成N-取代-2,5-二甲基吡咯烷的促进作用[J].石油化工,2024,53(7):940-946,7.基金项目
浙江省自然科学基金项目(LY23B060006). （LY23B060006）
