Microporous and Mesoporous Materials ( IF 4.8 ) Pub Date : 2019-02-11 , DOI: 10.1016/j.micromeso.2019.01.041 Weizhe Gao , Cederick Cyril Amoo , Guihua Zhang , Mudassar Javed , Brighton Mazonde , Chengxue Lu , Ruiqin Yang , Chuang Xing , Noritatsu Tsubaki
The traditional methods for zeolite synthesis include use of various solvents that tend to produce pollutants. It is therefore necessary to find green and efficient routes for zeolite synthesis. Herein, we demonstrated a detailed way to synthesize MOR zeolite by a solvent-free method. The synthesized MOR zeolite was characterized by XRD, SEM, TEM, N2 sorption, MAS NMR and UV-Raman spectroscopy. Compared with other routes, solvent-free method not only addresses pollution issues, but also significantly enhances the yield. A 650 g mass of MOR zeolite with good crystallinity was obtained in 1 L Teflon by one-time synthesis. The optimum conditions for fast synthesis of large amounts of high purity MOR zeolite crystals are the SiO2/Al2O3/Na2O = (7.5–25)/1/1, crystallization temperature and period at 200 °C for 24 h.
中文翻译:
深入了解MOR沸石的无溶剂合成及其实验室规模生产
沸石合成的传统方法包括使用各种容易产生污染物的溶剂。因此,有必要寻找绿色和有效的沸石合成途径。在本文中,我们展示了通过无溶剂方法合成MOR沸石的详细方法。通过XRD,SEM,TEM,N 2吸附,MAS NMR和UV-拉曼光谱对合成的MOR分子筛进行表征。与其他路线相比,无溶剂法不仅解决了污染问题,而且大大提高了产量。通过一次合成,在1L的Teflon中获得了650g质量的具有良好结晶性的MOR沸石。快速合成大量高纯度MOR沸石晶体的最佳条件是SiO 2 / Al 2 O 3/ Na 2 O =(7.5–25)/ 1/1,结晶温度和在200°C下作用24 h的时间。