Patent ID: 11904282
Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 2:
3. A method of separating He from a mixture gas comprising:
flowing the mixture gas through a CHA zeolite membrane;
separating the He from the mixture gas; and
collecting the separated He,
wherein the mixture gas comprises He and a molecule selected from the group consisting of CH4, CO, SO2, N2, O2, O2H4, O2H6, O3H6 and C3H5,
wherein the CHA zeolite membrane is prepared by a method comprising calcining the CHA zeolite membrane under an ozone atmosphere at a temperature of 150 to 300° C., and
wherein the mixture is flue gas, synthesis gas, exhaust gas, natural gas, or biogas, which comprises moisture.