石油化工2026，Vol.55Issue(3)：325-333,9.DOI:10.3969/j.issn.1000-8144.2026.03.002
氮氧共掺杂碳载Pt基催化剂选择性加氢制备N-(1,3-二甲基丁基)-N'-苯基对苯二胺
N,O co-doped carbon supported Pt-based catalyst for selective hydrogenation to N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine
摘要
Abstract
Tar residue was utilized as the carbon and nitrogen sources to prepare an N,O co-doped porous carbon(NOPC)by an MgO-template method combined with H2O2 oxidation,and a Pt/NOPC catalyst was subsequently prepared by loading Pt onto the obtained support.The catalyst was characterized by SEM,TEM,HRTEM,XRD,and Raman spectroscopy,and its catalytic activity for the synthesis of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine(6PPD)was evaluated.The experimental results show that N and O are uniformly incorporated into the carbon framework of Pt/NOPC,and Pt is evenly dispersed on the support surface.N doping decreases the surface electron density of Pt,weakens carbonyl adsorption,and suppresses side hydrogenation reactions of ketones,whereas O doping introduces acidic sites that promote Schiff base formation.The mesoporous structure improves mass transfer and ensures catalyst stability.Under 120℃and 1.5 MPa,the yield of 6PPD over Pt/NOPC reaches 99.4%,and remains higher than 95%after eight consecutive cycles.A feasible pathway for the valorization of tar residue is thus provided,and a theoretical basis is established for the design of catalysts for the reductive alkylation of ketones with amines as well as for the efficient synthesis of p-phenylenediamine antioxidants.关键词
氮氧共掺杂多孔碳/Pt基催化剂/选择性加氢/废渣资源化利用Key words
N,O co-doped porous carbon/Pt-based catalyst/selective hydrogenation/waste residue valorization分类
化学化工引用本文复制引用
李东升,丁军委,于文龙..氮氧共掺杂碳载Pt基催化剂选择性加氢制备N-(1,3-二甲基丁基)-N'-苯基对苯二胺[J].石油化工,2026,55(3):325-333,9.基金项目
国家自然科学基金项目(22208182). （22208182）
