化工进展2023，Vol.42Issue(12)：6452-6460,9.DOI:10.16085/j.issn.1000-6613.2023-0176
多级孔硅铝酸盐纳米球的合成及其吸附分离多环芳烃
Synthesis of hierarchically porous aluminosilicate nanospheres and their adsorption and separation of polycyclic aromatic hydrocarbons
摘要
Abstract
Hierarchically porous aluminosilicate nanospheres(NKM-5-Al-x)with different Si/Al ratios were synthesized by employing organic mesomorphous complexes of cationic surfactant cetyltrimethylammonium bromide(CTAB)and anionic polyelectrolyte polyacrylic acid(PAA)as the dynamic template and aluminum isopropoxide as the aluminum source.The hierarchically porous aluminosilicate nanospheres were characterized by X-ray diffraction(XRD),nitrogen adsorption desorption,temperature programmed(NH3-TPD),nuclear magnetic resonance(27Al NMR),scanning electron microscopy(SEM)and transmission electron microscopy(TEM).The SBA-15 and MCM-41 silica materials with relatively uniform pore structure were compared.The effects of the hierarchically porous structure and acid properties of the materials on the adsorption and separation performance of polycyclic aromatic hydrocarbons(PAHs)were investigated.The results showed that the pore distribution and acid properties had a significant impact on the separation performance of PAHs.The hierarchically porous structure was profit for the diffusion of PAHs.The increase of acid content was beneficial to improve the separation efficiency of PAHs.NKM-5-Al-5 with strong acid content and hierarchically porous structure indicated the best PAHs separation effect.The separation degree of RPAHs/non-aromatics was above 1.2 and the desorption/adsorption rate was fast with the desorption/adsorption rate ratio close to 1.关键词
多级孔纳米球/孔分布/酸性质/多环芳烃/吸附分离Key words
hierarchically porous nanospheres/pore distribution/acidic properties/polycyclic aromatic hydrocarbons/adsorption separation分类
化学化工引用本文复制引用
武鲁明,于海斌,臧甲忠,王亚权,李滨,孙振海..多级孔硅铝酸盐纳米球的合成及其吸附分离多环芳烃[J].化工进展,2023,42(12):6452-6460,9.基金项目
中海油能源发展股份有限公司项目(HFZXKT-TJY2020-06). （HFZXKT-TJY2020-06）
