Synthesis of zeolite ECR-1 from hydrothermal phase transition of zeolite Y

Aluminosilicate zeolite ECR-1 was successfully obtained under hydrothermal condition at 100 ℃ by hydrothermal phase transition of zeolite Y in the absence of organic template.When n(Na2O)/n(SiO2)ratio in the starting aluminosilicate gel[n(SiO2)∶n(Al2O3)∶n(Na2O)∶n(H2O)=10∶1.0∶2.5—3.3∶200] was 0.33,the phase transition from zeolite Y to zeolite P occurred.However,when the n(Na2O)/n(SiO2)ratio was 0.25,zeolite Y was converted into zeolite ECR-1.In this case,zeolite Y was served as nutrient for the crystallization of zeolite ECR-1.