生物质化学工程2025，Vol.59Issue(3)：39-47,9.DOI:10.3969/j.issn.1673-5854.2025.03.006
Pt@SLS催化4-丙基愈创木酚加氢脱氧制备丙基环己烷
Preparation of Propylcyclohexane via Hydrodeoxygenation of 4-Propylguaiacol Catalyzed by Pt@SLS
摘要
Abstract
Platinum nanoparticle catalyst(Pt@SLS)was prepared by in-situ reduction of sodium lignosulfonate(SLS)as a reducing agent and stabilizer in aqueous phase.It was used for the complete hydrodeoxygenation(HDO)of the lignin model compound 4-propylguaiacol to prepare propylcyclohexane.The prepared catalyst was analyzed and characterized by UV-Vis spectroscopy,transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),and dynamic light scattering(DLS).The results showed that the optimal preparation process for Pt@SLS was 0.1 mmol of H2PtCl6 and 60 mg of SLS dissolved in 6 mL ultrapure water and stirred at 400 r/min for 3 h at 70 ℃.SLS could reduce Pt ions in H2 PtCl6 to Pt0 under aqueous condition,but Pt2+remained the major species in Pt@SLS,accounting for approximately 89.5％.Under mild reaction conditions of the molar ratio of n(4-propylguaiacol)/n(Pt)=50,reaction temperature of 80 ℃,H2 pressure of 1 MPa,stirring speed of 800 r/min,and reaction time of 1 h,the conversion of 4-propylguaiacol was close to 100％,and the selectivity of the complete HDO product propylcyclohexane was up to 82.3％.The remaining Pt ions in the Pt@SLS system would continue to undergo reduction during the catalytic reaction,and the particle size of the nanoparticle increased from 2.17 nm to 3.01 nm but it could maintain a stable system and be reused in the HDO of 4-propylguaiacol.Pt@SLS was reused three times under the condition that the molar ratio of n(4-propylguaiacol)/n(Pt)=100.The selectivity of propylcyclohexane was still 57.7％,and the conversion rate was maintained above 97％.关键词
木质素基催化剂/木质素磺酸钠/水相Pt纳米粒子/完全加氢脱氧Key words
lignin-based catalyst/sodium lignosulfonate/aqueous Pt nanoparticles/fully hydrodeoxygenation分类
化学工程引用本文复制引用
陆婷宏,史鲁娜,杨宁博,袁冰..Pt@SLS催化4-丙基愈创木酚加氢脱氧制备丙基环己烷[J].生物质化学工程,2025,59(3):39-47,9.基金项目
国家自然科学基金资助项目(31870554) （31870554）
