**7. Conclusion**

In this chapter, the seed-induced, SDA-free crystallization system for the growth of submicrometer sized ZSM-5 zeolites is carried out, which clearly shows that:


With the understanding of the critical processes occurring during the crystallization of ZSM-5 zeolites, it is expected that the ZSM-5 zeolites possessing more interesting properties could be obtained by the co-ordinately variation of multi-synthesis parameters at the same time. This work will also make corresponding contributions on the rational design of ZSM-5 zeolites with desired functionalities in the domain of both materials and industrial catalysis.
