Provided is a process for preparing a zeolitic material comprising YO 2 in its framework structure, wherein Y stands for a tetravalent element. The process comprises the steps of: (1) providing a mixture comprising one or more sources for YO 2 , one or more fluoride containing compounds, and one or more structure directing agents; (2) crystallizing the mixture obtained in step (1) for obtaining the zeolitic material; wherein the mixture provided in step (1) and crystallized in step (2) contains 35 wt.% or less of H 2 O based on 100 wt.% of YO 2 . Also provided are a zeolitic material obtained according to the process, and a zeolitic material per se comprising SiO 2 in its framework structure, wherein the ratio of the total integration value of the peaks associated to Q3 signals to the total integration value of the peaks associated to Q4 signals is in the range of from 0:100 to 20:80 in the 29 Si MAS NMR spectrum of the zeolitic material. Further provided is use of the aforementioned zeolitic materials.