摘要
制备了载钯的超稳Y型(USY)分子筛材料Pd/USY,并组合其它贱金属进行改性,得到系列二元与多元改性Pd/USY;利用N2物理吸附仪、高分辨透射电子显微镜(TEM)、热重分析(TG)仪、化学吸附仪和X射线衍射(XRD)仪等,表征分析了系列改性Pd/USY分子筛对甲苯的吸附与脱附性能。结果表明,改性后的Pd-Ce-Zr/USY分子筛吸附性能最好,甲苯饱和吸附量高达290.7 mg/g,甲苯高温脱附温度范围为290~360℃,其最佳改性条件为钯负载质量分数为1%,pH值调节至8,煅烧温度为450℃。
The palladium-loaded ultrastable Y molecular sieve,Pd/USY and binary and multi-component modified Pd/USY by introducing other base metals were prepared.The adsorption and desorption of toluene on the modified Pd/USY molecular sieves was characterized by N2 physical adsorption,high resolution transmission electron microscopy(TEM),thermo gravimetric analysis(TG),chemical adsorption and X-ray diffraction(XRD).The results showed that the modified molecular sieve Pd-Ce-Zr/USY had the highest adsorption capacity,and that its saturated adsorption capacity of toluene was up to 290.7 mg/g.The high temperature desorption temperature range of toluene was 290 to 360℃.The optimum modification conditions are:1%of palladium loading,a pH of 8,and 450℃of calcination temperature.
作者
朱子俊
潘再富
杨冬霞
顾永万
黄卫强
王成雄
朱敬芳
ZHU Zi-jun;PAN Zai-fu;YANG Dong-xia;GU Yong-wan;HUANG Wei-qiang;WANG Cheng-xiong;ZHU Jing-fang(Kunming Institute of Precious Metals,Kunming 650106,China;Kunming Sino-Platinum Metals Catalyst Co.Ltd.,Kunming 650106,China)
出处
《贵金属》
CAS
CSCD
北大核心
2020年第1期10-19,共10页
Precious Metals
基金
云南省应用基础研究计划青年项目(2018FD140)。
