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按n(Na_2O)∶n(Al2O_3)∶n(SiO_2)∶n(TPABr)∶n(H_2O)=25∶1∶150∶10∶5000的摩尔比,在170℃24 h条件下水热合成出微孔ZSM-5分子筛,按n(Na OH)∶n(SiO_2)∶n(CTAB)∶n(H_2O)=0.3∶1∶0.3∶90的摩尔比配制成MCM-41的溶胶液,再将ZSM-5混合到MCM-41的晶化液中,110℃48 h晶化后取出漂洗烘干,再在550℃焙烧去除有机模板剂,获得ZSM-5/MCM-41微介孔复合分子筛,采用XRD、TEM和FT-IR等手段对合成分子筛进行了表征。考查了分子筛的投加量、pH值、温度、吸附时间以及共存物等对吸附X-5GN阳离子红染料废水的影响。正交试验结果表明,ZSM-5/MCM-41微介孔复合分子筛,对阳离子红X-5GN的吸附效果较好,当ZSM-5/MCM-41微介孔复合分子筛的投加量为0.3 g/L、阳离子红染料浓度为15 mg/L,溶液为中性、吸附时间为90 min,温度为60℃时吸附结果最好,脱色率达到了98.68%。
The hydrothermal synthesis was carried out at 170 ℃ for 24 h by the molar ratio of n (Na 2 O): n (Al 2 O 3): n (SiO 2): n (TPABr): n (H 2 O) = 25:1:150:10:5000 Pore ZSM-5 molecular sieve was prepared into a sol solution of MCM-41 according to a molar ratio of n (NaOH): n (SiO 2): n (CTAB): n (H 2 O) = 0.3:1:0.3:90, -5 is mixed into the crystallization solution of MCM-41, crystallized at 110 ° C for 48 h, rinsed and dried, and then calcined at 550 ° C to remove the organic template to obtain the ZSM-5 / MCM-41 micro-mesoporous composite molecular sieve. XRD, TEM and FT-IR methods were used to characterize the synthesized molecular sieve. The effects of dosage, pH value, temperature, adsorption time and coexistence of molecular sieve on the adsorption of X-5GN cationic red dye wastewater were investigated. The results of orthogonal test showed that the adsorption of ZSM-5 / MCM-41 on mesoporous composite zeolite X-5GN was better. When the dosage of ZSM-5 / MCM-41 microporous composite zeolite was 0.3 g / L, the concentration of cationic red dye was 15 mg / L, the solution was neutral, the adsorption time was 90 min, the adsorption was the best at 60 ℃, the decolorization rate reached 98.68%.