摘要
磷酸铝分子筛被誉为第三代分子筛,是一种常用的吸附材料。文中以氢氧化铝为铝源,正磷酸为磷源,二异丙胺为模板剂,采用水热合成法制备出AlPO-11分子筛并将其用于降低主流烟气中有害成分。通过XRD,N2吸附脱附,SEM,NH3-TPD等手段对其进行表征,对该材料降低卷烟主流烟气中苯酚、氢氰酸和巴豆醛的性能进行相关考察。通过表征表明:AlPO-11具有AEL的拓扑结构,为柱状聚集体,孔容在0.18—0.32 cm^3/g之间,比表面积在180—210 m2/g之间,孔径在2—4 nm之间。AlPO-11作为吸附材料添加于卷烟滤嘴中部10 mg/支,与实验卷烟的空白对照组相比,AlPO-11降低卷烟主流烟气中氢氰酸28%,降低苯酚28%,降低巴豆醛22%,最后对AlPO-11分子筛对苯酚吸附过程进行了动力学研究,结果表明:该吸附过程符合二级动力学模型,拟合系数在0.99以上。
The aluminophosphate molecular sieve is praised as the third generation molecular sieves,and it is a common adsorbent.AlPO-11 zeolite was prepared by hydrothermal synthesis using aluminum hydroxide as aluminum source,orthophosphate as phosphorus source,and diisopropylamine as template.And it was used to reduce harmful components in mainstream smoke.Further AlPO-11 zeolite was characterized by XRD,N2 adsorption-desorption,SEM,NH3-TPD and other methods,and the performance of the material reducing phenol,hydrocyanic acid and crotonaldehyde were investigated in main stream cigarette smoke.The characterization shows that AlPO-11 has the topological structure of AEL and columnar aggregate,the pore volume is 0.18-0.32 cm^3/g,and the specific surface area is 180-210 m^2/g and the pore diameter is 3-4 nm.AlPO-11 as the adsorption material was added to the cigarette filter in central 10 mg/cig.Compared with the blank experiment of cigarette control group,AlPO-11 decreased in mainstream cigarette smoke hydrocyanic acid 28%,reduced phenol 28%,and croton aldehyde 22%.Finally,phenol adsorption dynamics on the AlPO-11 molecular sieve was studied,the results show that the adsorption process accords with the two order dynamic model and the fitting coefficient is above 0.99.
作者
郑青叶
王亚明
蒋丽红
王鹤林
刘志华
何沛
ZHENG Qing-ye;WANG Ya-ming;JIANG Li-hong;WANG He-lin;LIU Zhi-hua;HE pei(Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650093,Yunnan Province, China;Key Laboratory of Tobacco Chemistry of Yunnan Province, Research andDevelopment of Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231,Yunnan Province, China)
出处
《化学工程》
CAS
CSCD
北大核心
2018年第12期10-14,26,共6页
Chemical Engineering(China)
关键词
介孔材料
吸附
氢氰酸
苯酚
动力学
mesoporous material
adsorbent
hydrocyanic acid
phenol
dynamics
