Scm-3 zeolite and its preparation method

The present invention relates to a SCM-3 zeolite and its preparation method, mainly to solve the technical problem of the new zeolite structure according to the prior art are not SCM-3, the present invention provides a new molecular sieve SCM-3, comprising the following by using molar ratio of chemical composition: XO2 : nY2O3 , where X is silicon or germanium, Y is aluminum, boron, gallium, iron and other elements at least one, 0.002≤n≤0.25, the SCM-3 sieve at interplanar spacings d = 16.70 ± 1.7? , D = 8.24 ± 0.23? , D = 7.24 ± 0.15? , D = 6.22 ± 0.12? , D = 3.59 ± 0.06? , D = 3.48 ± 0.06? , And d = 3.38 ± 0.06? Appears at the maximum X-ray diffraction peaks of the aspect, it is preferred to solve the above technical problem, a synthetic SCM-3 molecular sieve has a good prospect in terms of catalytic cracking and isomerization reactions of organic molecules of heavy oil.