Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes
碩士 === 中原大學 === 化學工程研究所 === 105 === Carbon molecular sieve membranes (CMSMs) were regarded as one of the promising membrane for gas separation because of its outstanding separation performance. The industrial application of CMSMs was limited by its chemical aging. In this study, the degree of chemic...
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ndltd-TW-105CYCU50630072017-08-20T04:07:37Z http://ndltd.ncl.edu.tw/handle/01540350063749814448 Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes 碳分子篩薄膜氣體分離性能調控及老化抑制之研究 Wan-Yu Chen 陳婉瑜 碩士 中原大學 化學工程研究所 105 Carbon molecular sieve membranes (CMSMs) were regarded as one of the promising membrane for gas separation because of its outstanding separation performance. The industrial application of CMSMs was limited by its chemical aging. In this study, the degree of chemical aging was decreased using air post-treatment. It was fabricated through pyrolyzing Kapton at 800°C followed by an air post-treatment at different temperature and exposure time. XRD analysis confirmed that the d-spacing of CMSMs was increased after air post-treatment. BET analysis demonstrated that post-treated membranes have higher BET and Langmuir surface area than that of untreated CMSMs. PALS analysis indicated that pore diameter was increased after air post-treatment. Gas sorption isotherm showed that the decrease of adsorption capacities of post-treated CMSMs was due to the decrease of active sites, leading to lower degree of aging. Gas separation test revealed that air post-treatment may enhance the gas permeability and reduce the degree of aging of CMSMs. CMSMs was post-treated at 400℃ for 5h and after 1 month aging, it had higher CO2 permeability and considerable CO2/N2 selectivity (P=56barrer, α=147) than the untreated CMSMs (P=28barrer, α=186). Juin-Yih Lai Chien-Chieh Hu 賴君義 胡蒨傑 2017 學位論文 ; thesis 93 zh-TW |
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碩士 === 中原大學 === 化學工程研究所 === 105 === Carbon molecular sieve membranes (CMSMs) were regarded as one of the promising membrane for gas separation because of its outstanding separation performance. The industrial application of CMSMs was limited by its chemical aging. In this study, the degree of chemical aging was decreased using air post-treatment. It was fabricated through pyrolyzing Kapton at 800°C followed by an air post-treatment at different temperature and exposure time. XRD analysis confirmed that the d-spacing of CMSMs was increased after air post-treatment. BET analysis demonstrated that post-treated membranes have higher BET and Langmuir surface area than that of untreated CMSMs. PALS analysis indicated that pore diameter was increased after air post-treatment. Gas sorption isotherm showed that the decrease of adsorption capacities of post-treated CMSMs was due to the decrease of active sites, leading to lower degree of aging. Gas separation test revealed that air post-treatment may enhance the gas permeability and reduce the degree of aging of CMSMs. CMSMs was post-treated at 400℃ for 5h and after 1 month aging, it had higher CO2 permeability and considerable CO2/N2 selectivity (P=56barrer, α=147) than the untreated CMSMs (P=28barrer, α=186).
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author2 |
Juin-Yih Lai |
author_facet |
Juin-Yih Lai Wan-Yu Chen 陳婉瑜 |
author |
Wan-Yu Chen 陳婉瑜 |
spellingShingle |
Wan-Yu Chen 陳婉瑜 Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes |
author_sort |
Wan-Yu Chen |
title |
Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes |
title_short |
Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes |
title_full |
Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes |
title_fullStr |
Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes |
title_full_unstemmed |
Tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes |
title_sort |
tailoring the gas separation performance and reducing the chemical aging effect of carbon molecular sieve membranes |
publishDate |
2017 |
url |
http://ndltd.ncl.edu.tw/handle/01540350063749814448 |
work_keys_str_mv |
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