The use of zeolites, in particular faujasite (FAU), as synthesis reagents to make other zeol.

ite types has steadily increased in the past several years. In this contribution, we survey some of these research programs and review Chevron’s long history in this area. By using more open (lower framework density) zeolites as reagents in combination with organic SDAs, we discovered early on that this synthesis route provided a means to change the reaction kinetics and therefore reaction times while also influencing product selectivity. Critical to our understanding of this synthetic method was determining if ion-exchange into an open structure like FAU could lower activation barriers to nucleation. To answer this question, we studied the conversion of FAU into SSZ-13 (CHA) with variable acidity, a system in which we have significant experience and synthetic data for comparison. Here, we specifically considered the ion-exchange events themselves and the zeolite reaction rates. In addition, we altered some of the synthesis events by silylation of the FAU reagents. .

沸石，特别是八面沸石（FAU）作为合成其他沸石的合成试剂的用途。

过去几年中，ite类型一直稳定增长。在这项贡献中，我们调查了其中一些研究计划，并回顾了雪佛龙在该领域的悠久历史。通过与有机SDA结合使用更多开孔（较低骨架密度）沸石作为试剂，我们很早就发现该合成路线提供了一种改变反应动力学，从而改变反应时间，同时还影响产物选择性的方法。对于我们对这种合成方法的理解，至关重要的是确定离子交换成FAU之类的开放结构是否可以降低成核的激活壁垒。为了回答这个问题，我们研究了酸度可变的FAU向SSZ-13（CHA）的转化，在该系统中我们拥有丰富的经验和合成数据供比较。这里，我们专门考虑了离子交换事件本身和沸石的反应速率。此外，我们通过FAU试剂的甲硅烷基化改变了一些合成事件。。