摘要
以稻壳为硅源和介孔模板,磷钨酸为钨源,采用等体积浸渍法制备了一系列不同WO_(3)负载量的介孔WO_(3)/SiO_(2)催化剂。结果表明,低负载量的样品,WO_(3)晶粒在载体SiO_(2)上高度分散,且样品的比表面积、外表面积和介孔体积均较高。采用二苯并噻吩(DBT)和4,6-二甲基二苯并噻吩(4,6-DMDBT)模拟油的氧化脱硫反应,评价了样品的催化性能。在优化的条件下,2.4%WO_(3)/SiO_(2)样品给出了99.9%的DBT转化率和99.5%的4,6-DMDBT转化率。
A series of mesoporous WO_(3)/SiO_(2) catalysts with different WO_(3) loadings were prepared by an incipient-wetness impregnation method using agricultural waste rice husk as both silica source and mesoporous template,and phosphotungstic acid as tungsten source.The relevant characterization results showed that for the samples with low loading,the WO_(3) grains were highly dispersed on the carrier SiO_(2),and the samples had higher specific surface area,external surface area and mesopore volume.The catalytic performance of the samples was evaluated by oxidative desulfurization reactions of dibenzothiophene(DBT)and 4,6-dimethyldibenzothiophene(4,6-DMDBT).The 2.4% WO_(3)/SiO_(2) sample gave 99.9% DBT conversion and 99.5% 4,6-DMDBT conversion under optimized conditions.
作者
张敬唯
赵茹玉
何苗
王阳
张银海
刘晓雪
李颢
Zhang Jingwei;Zhao Ruyu;He Miao;Wang Yang;Zhang Yinhai;Liu Xiaoxue;Li Hao(College of Chemistry and Environmental Engineering,Yangtze University,Jingzhou 434023,China;College of Agriculture,Yangtze University,Jingzhou 434000,China)
出处
《云南化工》
CAS
2024年第5期55-59,共5页
Yunnan Chemical Technology
