{"title":"B-MFI, MTN-和mtw型材料的干法合成","authors":"U. Deforth , K.K. Unger , F. Schüth","doi":"10.1016/S0927-6513(96)00118-6","DOIUrl":null,"url":null,"abstract":"<div><p>B-MFI and MTN-type materials were synthesized via the fluoride route from dry powders in the complete absence of a solution phase. Amorphous precursors obtained by drying SiO<sub>2</sub> · Al<sub>2</sub>O<sub>3</sub> gels at 700°C were transformed into MTN-type material in the presence of dried NH<sub>4</sub>F and TMACl. Amorphous precursors obtained by drying SiO<sub>2</sub> gels at 700°C were transformed into B-MFI in the presence of dried NH<sub>4</sub>F, B<sub>2</sub>O<sub>3</sub> and TPABr. Water is formed as a reaction product. However, the water vapor pressure is appreciably below the water vapor saturation pressure under the given reaction conditions. In addition, syntheses using seed crystals were carried out successfully.</p></div>","PeriodicalId":100926,"journal":{"name":"Microporous Materials","volume":"9 5","pages":"Pages 287-290"},"PeriodicalIF":0.0000,"publicationDate":"1997-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0927-6513(96)00118-6","citationCount":"26","resultStr":"{\"title\":\"Dry synthesis of B-MFI, MTN- and MTW-type materials\",\"authors\":\"U. Deforth , K.K. Unger , F. Schüth\",\"doi\":\"10.1016/S0927-6513(96)00118-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>B-MFI and MTN-type materials were synthesized via the fluoride route from dry powders in the complete absence of a solution phase. Amorphous precursors obtained by drying SiO<sub>2</sub> · Al<sub>2</sub>O<sub>3</sub> gels at 700°C were transformed into MTN-type material in the presence of dried NH<sub>4</sub>F and TMACl. Amorphous precursors obtained by drying SiO<sub>2</sub> gels at 700°C were transformed into B-MFI in the presence of dried NH<sub>4</sub>F, B<sub>2</sub>O<sub>3</sub> and TPABr. Water is formed as a reaction product. However, the water vapor pressure is appreciably below the water vapor saturation pressure under the given reaction conditions. In addition, syntheses using seed crystals were carried out successfully.</p></div>\",\"PeriodicalId\":100926,\"journal\":{\"name\":\"Microporous Materials\",\"volume\":\"9 5\",\"pages\":\"Pages 287-290\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1997-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S0927-6513(96)00118-6\",\"citationCount\":\"26\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microporous Materials\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0927651396001186\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microporous Materials","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927651396001186","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Dry synthesis of B-MFI, MTN- and MTW-type materials
B-MFI and MTN-type materials were synthesized via the fluoride route from dry powders in the complete absence of a solution phase. Amorphous precursors obtained by drying SiO2 · Al2O3 gels at 700°C were transformed into MTN-type material in the presence of dried NH4F and TMACl. Amorphous precursors obtained by drying SiO2 gels at 700°C were transformed into B-MFI in the presence of dried NH4F, B2O3 and TPABr. Water is formed as a reaction product. However, the water vapor pressure is appreciably below the water vapor saturation pressure under the given reaction conditions. In addition, syntheses using seed crystals were carried out successfully.
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