Author： Coterillo Clara Casado
Publisher： Taylor & Francis Ltd
ISSN： 0149-6395
Source： Separation Science and Technology, Vol.46, Iss.8, 2011-01, pp. : 1224-1230
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Abstract
The development of gas separation membranes able to work at high temperatures require robust and thin ceramic layers. In this work, zirconia membranes have been prepared by the sol-gel method, following the colloidal sol route. The microporosity and crystallinity of the ZrO2 material was tested by N2 adsorption and XRD. The derived active zirconia layers were defect-free as seen by SEM. The optimum firing temperature range was set in the range 400-500°C. He, H2, CO2, N2 gas permeation was conducted at temperatures up to 200°C. High permeances were obtained and the microporosity of the zirconia layer was confirmed.
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