{"title":"SOF/ sub2 /与分子筛13X的相互作用","authors":"T. Lussier, M. Frechette, R. Larocque","doi":"10.1109/CEIDP.1997.641150","DOIUrl":null,"url":null,"abstract":"Interactions between the SOF/sub 2/ species and molecular sieve type 13X were studied in a SF/sub 6/ gas matrix. Adsorption experiments were performed through single or sequential exposures of pre-humidified and virgin dry samples using gas mixtures prepared at concentration levels varying from 1/spl times/10/sup 4/ to 5/spl times/10/sup 4/ ppm/sub v/. In all cases, the initial total pressure was set at 2 bar abs at 298 K. Based on the results, the 13X was found to adsorb the SOF/sub 2/ and to transform a portion of it into SO/sub 2/. This hydrolysis reaction led to an increasing amount of SO/sub 2/ in the gas phase which was monitored throughout the experiments, The kinetics observed in the early stage of initial exposure suggested an adsorption process controlled by a concentration gradient. The results also revealed that CO/sub 2/ species can be displaced by the SOF/sub 2/. When an amount of water as high as 4/spl times/10/sup 3/ ppm/sub v/ was initially present in the gas phase, the SOF/sub 2//SO/sub 2/ dynamics were not significantly modified. However, the new contaminant was found to be as effectively removed by the sieve as the SOF/sub 2/ species. On the other hand, a sieve which had been pre-humidified through extensive exposure to the ambient air released water when subjected to an SOF/sub 2/ gas mixture, pointing to a preferential SOF/sub 2/ adsorption. Considerations based on the material properties were used to explain the overall phenomena observed.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"28 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Interactions of SOF/sub 2/ with molecular sieve 13X\",\"authors\":\"T. Lussier, M. Frechette, R. Larocque\",\"doi\":\"10.1109/CEIDP.1997.641150\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Interactions between the SOF/sub 2/ species and molecular sieve type 13X were studied in a SF/sub 6/ gas matrix. Adsorption experiments were performed through single or sequential exposures of pre-humidified and virgin dry samples using gas mixtures prepared at concentration levels varying from 1/spl times/10/sup 4/ to 5/spl times/10/sup 4/ ppm/sub v/. In all cases, the initial total pressure was set at 2 bar abs at 298 K. Based on the results, the 13X was found to adsorb the SOF/sub 2/ and to transform a portion of it into SO/sub 2/. This hydrolysis reaction led to an increasing amount of SO/sub 2/ in the gas phase which was monitored throughout the experiments, The kinetics observed in the early stage of initial exposure suggested an adsorption process controlled by a concentration gradient. The results also revealed that CO/sub 2/ species can be displaced by the SOF/sub 2/. When an amount of water as high as 4/spl times/10/sup 3/ ppm/sub v/ was initially present in the gas phase, the SOF/sub 2//SO/sub 2/ dynamics were not significantly modified. However, the new contaminant was found to be as effectively removed by the sieve as the SOF/sub 2/ species. On the other hand, a sieve which had been pre-humidified through extensive exposure to the ambient air released water when subjected to an SOF/sub 2/ gas mixture, pointing to a preferential SOF/sub 2/ adsorption. Considerations based on the material properties were used to explain the overall phenomena observed.\",\"PeriodicalId\":176239,\"journal\":{\"name\":\"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena\",\"volume\":\"28 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1997-10-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CEIDP.1997.641150\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEIDP.1997.641150","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Interactions of SOF/sub 2/ with molecular sieve 13X
Interactions between the SOF/sub 2/ species and molecular sieve type 13X were studied in a SF/sub 6/ gas matrix. Adsorption experiments were performed through single or sequential exposures of pre-humidified and virgin dry samples using gas mixtures prepared at concentration levels varying from 1/spl times/10/sup 4/ to 5/spl times/10/sup 4/ ppm/sub v/. In all cases, the initial total pressure was set at 2 bar abs at 298 K. Based on the results, the 13X was found to adsorb the SOF/sub 2/ and to transform a portion of it into SO/sub 2/. This hydrolysis reaction led to an increasing amount of SO/sub 2/ in the gas phase which was monitored throughout the experiments, The kinetics observed in the early stage of initial exposure suggested an adsorption process controlled by a concentration gradient. The results also revealed that CO/sub 2/ species can be displaced by the SOF/sub 2/. When an amount of water as high as 4/spl times/10/sup 3/ ppm/sub v/ was initially present in the gas phase, the SOF/sub 2//SO/sub 2/ dynamics were not significantly modified. However, the new contaminant was found to be as effectively removed by the sieve as the SOF/sub 2/ species. On the other hand, a sieve which had been pre-humidified through extensive exposure to the ambient air released water when subjected to an SOF/sub 2/ gas mixture, pointing to a preferential SOF/sub 2/ adsorption. Considerations based on the material properties were used to explain the overall phenomena observed.