Effect of methanol concentration on lithium aluminosilicate gels
The viscosity of the solution, the diffusion coefficient and the time-to-gel depend on the preparation method used in lithium aluminosilicate gels. The crystallization temperature during heat treatment depends on the preparation method as well. Samples were prepared by adding anhydrous tetraethylort...
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Veröffentlicht in: | Journal of non-crystalline solids 1989-05, Vol.109 (1), p.69-78 |
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creator | de Lambilly, H. Klein, L.C. |
description | The viscosity of the solution, the diffusion coefficient and the time-to-gel depend on the preparation method used in lithium aluminosilicate gels. The crystallization temperature during heat treatment depends on the preparation method as well. Samples were prepared by adding anhydrous tetraethylorthosilicate (TEOS) toa solution of methanol, water and the nitrates of lithium and aluminum. The amount of methanol was varied to create miscible and immiscible compositions. High methanol compositions took a long time to gel and lost fluidity abruptly. Low methanol compositions took a short time to gel and lost fluidity gradually. Nitrogen sorption techniques were used to determine surface areas in dried and heat treated gels. Low methanol compositions have higher surface areas than high methanol compositions. Thermal analysis was used to identify reaction temperatures. High and low methanol compositions show similar behavior below 400°C but high methanol compositions crystallize beginning around 550°C while low methanol compositions crystallize above 700°C. |
doi_str_mv | 10.1016/0022-3093(89)90444-4 |
format | Article |
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The crystallization temperature during heat treatment depends on the preparation method as well. Samples were prepared by adding anhydrous tetraethylorthosilicate (TEOS) toa solution of methanol, water and the nitrates of lithium and aluminum. The amount of methanol was varied to create miscible and immiscible compositions. High methanol compositions took a long time to gel and lost fluidity abruptly. Low methanol compositions took a short time to gel and lost fluidity gradually. Nitrogen sorption techniques were used to determine surface areas in dried and heat treated gels. Low methanol compositions have higher surface areas than high methanol compositions. Thermal analysis was used to identify reaction temperatures. High and low methanol compositions show similar behavior below 400°C but high methanol compositions crystallize beginning around 550°C while low methanol compositions crystallize above 700°C.</description><identifier>ISSN: 0022-3093</identifier><identifier>EISSN: 1873-4812</identifier><identifier>DOI: 10.1016/0022-3093(89)90444-4</identifier><identifier>CODEN: JNCSBJ</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Aerosols ; Chemistry ; Colloidal gels. Colloidal sols ; Colloidal state and disperse state ; Emulsions. Microemulsions. Foams ; Exact sciences and technology ; General and physical chemistry ; Powders</subject><ispartof>Journal of non-crystalline solids, 1989-05, Vol.109 (1), p.69-78</ispartof><rights>1989</rights><rights>1989 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c395t-fea89d372e180cc99faee32594c7a2bab674ee429dec2b415f5484dfadf84f1c3</citedby><cites>FETCH-LOGICAL-c395t-fea89d372e180cc99faee32594c7a2bab674ee429dec2b415f5484dfadf84f1c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0022-3093(89)90444-4$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7357427$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>de Lambilly, H.</creatorcontrib><creatorcontrib>Klein, L.C.</creatorcontrib><title>Effect of methanol concentration on lithium aluminosilicate gels</title><title>Journal of non-crystalline solids</title><description>The viscosity of the solution, the diffusion coefficient and the time-to-gel depend on the preparation method used in lithium aluminosilicate gels. The crystallization temperature during heat treatment depends on the preparation method as well. Samples were prepared by adding anhydrous tetraethylorthosilicate (TEOS) toa solution of methanol, water and the nitrates of lithium and aluminum. The amount of methanol was varied to create miscible and immiscible compositions. High methanol compositions took a long time to gel and lost fluidity abruptly. Low methanol compositions took a short time to gel and lost fluidity gradually. Nitrogen sorption techniques were used to determine surface areas in dried and heat treated gels. Low methanol compositions have higher surface areas than high methanol compositions. Thermal analysis was used to identify reaction temperatures. High and low methanol compositions show similar behavior below 400°C but high methanol compositions crystallize beginning around 550°C while low methanol compositions crystallize above 700°C.</description><subject>Aerosols</subject><subject>Chemistry</subject><subject>Colloidal gels. Colloidal sols</subject><subject>Colloidal state and disperse state</subject><subject>Emulsions. Microemulsions. Foams</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Powders</subject><issn>0022-3093</issn><issn>1873-4812</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNqNkE1LAzEQhoMoWKv_wMMeRPSwmq_dTS6iFL-g4EXPIc1ObCS7qUkq-O_dtaVHcRiYy_O-Aw9CpwRfEUzqa4wpLRmW7ELIS4k55yXfQxMiGlZyQeg-muyQQ3SU0gcepmFigm7vrQWTi2CLDvJS98EXJvQG-hx1dqEvhvUuL926K7Rfd64PyXlndIbiHXw6RgdW-wQn2ztFbw_3r7Oncv7y-Dy7m5eGySqXFrSQLWsoEIGNkdJqAEYryU2j6UIv6oYDcCpbMHTBSWUrLnhrdWsFt8SwKTrf9K5i-FxDyqpzyYD3uoewTopWFNNaVP8DST2CfAOaGFKKYNUquk7Hb0WwGr2qUZoapSkh1a9XxYfY2bZfJ6O9jbo3Lu2yDasaTpsBu9lggyP4chBVMg4Gsa2Lg3DVBvf3nx9SZYxt</recordid><startdate>19890501</startdate><enddate>19890501</enddate><creator>de Lambilly, H.</creator><creator>Klein, L.C.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><scope>7QQ</scope></search><sort><creationdate>19890501</creationdate><title>Effect of methanol concentration on lithium aluminosilicate gels</title><author>de Lambilly, H. ; Klein, L.C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c395t-fea89d372e180cc99faee32594c7a2bab674ee429dec2b415f5484dfadf84f1c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1989</creationdate><topic>Aerosols</topic><topic>Chemistry</topic><topic>Colloidal gels. Colloidal sols</topic><topic>Colloidal state and disperse state</topic><topic>Emulsions. Microemulsions. Foams</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Powders</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>de Lambilly, H.</creatorcontrib><creatorcontrib>Klein, L.C.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Ceramic Abstracts</collection><jtitle>Journal of non-crystalline solids</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>de Lambilly, H.</au><au>Klein, L.C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of methanol concentration on lithium aluminosilicate gels</atitle><jtitle>Journal of non-crystalline solids</jtitle><date>1989-05-01</date><risdate>1989</risdate><volume>109</volume><issue>1</issue><spage>69</spage><epage>78</epage><pages>69-78</pages><issn>0022-3093</issn><eissn>1873-4812</eissn><coden>JNCSBJ</coden><abstract>The viscosity of the solution, the diffusion coefficient and the time-to-gel depend on the preparation method used in lithium aluminosilicate gels. The crystallization temperature during heat treatment depends on the preparation method as well. Samples were prepared by adding anhydrous tetraethylorthosilicate (TEOS) toa solution of methanol, water and the nitrates of lithium and aluminum. The amount of methanol was varied to create miscible and immiscible compositions. High methanol compositions took a long time to gel and lost fluidity abruptly. Low methanol compositions took a short time to gel and lost fluidity gradually. Nitrogen sorption techniques were used to determine surface areas in dried and heat treated gels. Low methanol compositions have higher surface areas than high methanol compositions. Thermal analysis was used to identify reaction temperatures. High and low methanol compositions show similar behavior below 400°C but high methanol compositions crystallize beginning around 550°C while low methanol compositions crystallize above 700°C.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/0022-3093(89)90444-4</doi><tpages>10</tpages></addata></record> |
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source | ScienceDirect Journals (5 years ago - present) |
subjects | Aerosols Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Emulsions. Microemulsions. Foams Exact sciences and technology General and physical chemistry Powders |
title | Effect of methanol concentration on lithium aluminosilicate gels |
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