Efficient synthesis of aluminosilicate RTH zeolite with good catalytic performances in NH<sub>3</sub>-SCR and MTO reactions
作者:Hao Xu、Qinming Wu、Yueying Chu、Jingang Jiang、Ling Zhang、Shuxiang Pan、Changsheng Zhang、Longfeng Zhu、Feng Deng、Xiangju Meng、Stefan Maurer、Robert McGuire、Andrei-Nicolae Parvulescu、Ulrich Müller、Feng-Shou Xiao
DOI:10.1039/c8ta01734d
日期:——
zeolites and to understand the crystallization process with the new template. Very interestingly, the crystallization of RTH zeolite with the new template takes a very short time (12 h at 130 °C and 50 min at 240 °C) compared with conventional RTH zeolite synthesis reported in the literature (72 h at 130 °C). Theoretical calculations show that this novel organic template has lower interaction energies
2,6-甲基-N-甲基吡啶鎓作为一种新型的有机模板,被用于合成SiO 2 / Al 2 O 3比为17.6的RTH硅铝酸盐沸石。起始凝胶中2,6-甲基-N-甲基吡啶鎓模板的数量,Na 2 O / SiO 2比,SiO 2 / Al 2 O 3比和H 2 O / SiO 2比显着影响结晶。 RTH沸石。几种分析方法,例如XRD,SEM,N 2吸附,TG-DTA,DRIFT和NMR被用于表征所获得的RTH沸石并了解新模板的结晶过程。非常有趣的是,与文献中报道的常规RTH沸石合成(130°C时72 h)相比,使用新模板进行RTH沸石的结晶仅需很短的时间(130°C时12 h,240°C时50 min)。 。理论计算表明,这种新颖的有机模板具有比先前文献中报道的有机模板低的用于沸石笼状空间填充的相互作用能,从而导致更强的结构指向性。动力学结果表明,这种新型有机模板的活化能远低于传统模板。3- SC