The Open Laboratory of Comprehensive Utilization of Carbon Resources, Dalian University of Technology Abstract: The influence of synthetic raw material composition, aging, ultrasonic vibration treatment, addition of directing agent or seed crystals on the synthesis of Ti-SiZSM-5 molecular sieve was studied in a cheap raw material hydrothermal synthesis system. The results show that at lower alkalinity, n(SiO2)/n(TiO) is very wide and uniform, and Ti-SiZSM-48 is easily formed; at higher alkalinity, n(SiO2)/n(TiO2) is between 50-400 Ti-SiZSM-5 is easily formed at times. The gel must be aged to synthesize a Ti-SiZSM-5 molecular sieve with high crystallinity, but when the gel is oscillated by ultrasonic wave to synthesize titanium silicate molecular sieve,