{"title":"单相和双相莫来石前驱体的固相反应表征","authors":"A. Chakraborty","doi":"10.1179/096797804225012738","DOIUrl":null,"url":null,"abstract":"Abstract The characterisation by various spectroscopic techniques of amorphous mullite precursors formed from monophasic (SH) and diphasic (DG) gels is reviewed. In a new approach, both types of precursor have been heated with CaCO3 and the crystalline phases formed during solid state reaction monitored using an X-ray powder diffraction technique. The formation of a calcium aluminosilicate phase (gehlenite) rather than calcium aluminate suggests that both precursors consist of an amorphous aluminosilicate phase of composition close to that of 3:2 mullite.","PeriodicalId":350675,"journal":{"name":"British Ceramic Transactions","volume":"41 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Characterisation of monophasic and diphasic mullite precursors by solid state reaction study\",\"authors\":\"A. Chakraborty\",\"doi\":\"10.1179/096797804225012738\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract The characterisation by various spectroscopic techniques of amorphous mullite precursors formed from monophasic (SH) and diphasic (DG) gels is reviewed. In a new approach, both types of precursor have been heated with CaCO3 and the crystalline phases formed during solid state reaction monitored using an X-ray powder diffraction technique. The formation of a calcium aluminosilicate phase (gehlenite) rather than calcium aluminate suggests that both precursors consist of an amorphous aluminosilicate phase of composition close to that of 3:2 mullite.\",\"PeriodicalId\":350675,\"journal\":{\"name\":\"British Ceramic Transactions\",\"volume\":\"41 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"British Ceramic Transactions\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1179/096797804225012738\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"British Ceramic Transactions","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1179/096797804225012738","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Characterisation of monophasic and diphasic mullite precursors by solid state reaction study
Abstract The characterisation by various spectroscopic techniques of amorphous mullite precursors formed from monophasic (SH) and diphasic (DG) gels is reviewed. In a new approach, both types of precursor have been heated with CaCO3 and the crystalline phases formed during solid state reaction monitored using an X-ray powder diffraction technique. The formation of a calcium aluminosilicate phase (gehlenite) rather than calcium aluminate suggests that both precursors consist of an amorphous aluminosilicate phase of composition close to that of 3:2 mullite.
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