高等学校化学学报2018，Vol.39Issue(6)：1255-1259,5.DOI:10.7503/cjcu20170746
Ce掺杂固体酸活化的碱木质素的抗氧化性能
Antioxidant Property of Catalyzed Lignosulfonate Using S2O2-8 /ZrO2 Doped Cerium as Catalysts
摘要
Abstract
To improve catalysis activity of S2 O2-8 /ZrO2 for the hydrogenation of lignosulfonate, rare earth cerium was doped onto the catalysts. Through Hammett indicator method and the determination of X-ray small diffraction(XRD), specific surface area(SBET) and sulfur content, the influence of different Cerium doping ratio on the acid strength of solid acid, carrier crystal type and SBET were discussed. Doping cerium promoted to form amorphous ZrO2 crystal, contributed to increasing SBET and sulfur content for solid acid enhancement. The contents of phenol hydroxyl and total hydroxyl were considered as a fractions of active groups in lignin, increased from 1. 52％ and 2. 31％ to 3. 35％ and 10. 35％, combined with the data of 1 H nuclear magnetic spectra( 1 H NMR ) . The results proved that the cerium doping improved S2 O2-8 /ZrO2 catalytic properties through increasing the hydroxyl groups content of lignosulfonate. It confirmed that the catalyst coping Cerium was an excellent catalyst for hydrogenation of lignosulfonate dispersing in water. And hydroxylated ligno-sulfonate has good antioxidant capacity.关键词
Ce掺杂/稀土固体酸/碱木质素/抗氧化性Key words
Coping cerium/Rare Earth solid acid/Lignonsulfonate/Antioxidant分类
化学化工引用本文复制引用
张岩,张盛明,方桂珍..Ce掺杂固体酸活化的碱木质素的抗氧化性能[J].高等学校化学学报,2018,39(6):1255-1259,5.基金项目
中央高校基本科研业务费专项资金项目B(批准号:2572015BB16)和国家自然科学基金(批准号:31170542)资助. Supported by the Basic Science Special Foundation of Central University, China(No.2572015BB16) and the National Natural Science Foundation of China( No.31170542) . （批准号:2572015BB16）
