Exchangeable ion and thermal treatment effects on basal spacings of Al-hydroxy pillared montmorillonites
Al-hydroxy intercalated clays (ALHICs) obtained from different parent clays were used to investigate the interactions between oligomers and clay surface layers. The thermal stability of ALHICs obtained from natural, Cs-, Ca-, Ba-, Fe-, Cu- or Ce-montmorillonites has been investigated by studying the...
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| description | Al-hydroxy intercalated clays (ALHICs) obtained from different parent clays were used to investigate the interactions between oligomers and clay surface layers. The thermal stability of ALHICs obtained from natural, Cs-, Ca-, Ba-, Fe-, Cu- or Ce-montmorillonites has been investigated by studying the relationship between basal spacing and calcination temperature. X-ray diffraction has shown that the basal spacing of ALHICs obtained from Cu-montmorillonite calcined at 550°C is 13.4 Å, different from basal spacings of ALHICs obtained from Fe-montmorillonite (16.0 Å) and other parent clays (16.7 Å). Thermograms for AIHICs obtained from natural, Fe- and Ce-montmorillonites displayed distinct steps at 225 and 650°C, attributed to the dehydration of Al13 oligomers, and the dehydroxylation of the surface layer, respectively. By contrast, thermograms of ALHICs obtained from Cu-montmorillonite displayed one step between 250 and 700°C for both dehydration and dehydroxylation. Mossbauer parameters showed that Fe3+ octahedra in octahedral sheets are distorted in pillared interlayered clay (PILC) obtained from Cu-montmorillonite and undistorted in that obtained from Fe-montmorillonite. The difference in thermal stability for the various ALHICs is attributed to the retention of some of the original cations after intercalation with Al13 oligomers, which induces several interactions between the oligomers and the clay surface layers. |
| doi_str_mv | 10.1346/CCMN.2003.510104 |
| format | Article |
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The thermal stability of ALHICs obtained from natural, Cs-, Ca-, Ba-, Fe-, Cu- or Ce-montmorillonites has been investigated by studying the relationship between basal spacing and calcination temperature. X-ray diffraction has shown that the basal spacing of ALHICs obtained from Cu-montmorillonite calcined at 550°C is 13.4 Å, different from basal spacings of ALHICs obtained from Fe-montmorillonite (16.0 Å) and other parent clays (16.7 Å). Thermograms for AIHICs obtained from natural, Fe- and Ce-montmorillonites displayed distinct steps at 225 and 650°C, attributed to the dehydration of Al13 oligomers, and the dehydroxylation of the surface layer, respectively. By contrast, thermograms of ALHICs obtained from Cu-montmorillonite displayed one step between 250 and 700°C for both dehydration and dehydroxylation. Mossbauer parameters showed that Fe3+ octahedra in octahedral sheets are distorted in pillared interlayered clay (PILC) obtained from Cu-montmorillonite and undistorted in that obtained from Fe-montmorillonite. The difference in thermal stability for the various ALHICs is attributed to the retention of some of the original cations after intercalation with Al13 oligomers, which induces several interactions between the oligomers and the clay surface layers.</description><identifier>ISSN: 0009-8604</identifier><identifier>EISSN: 1552-8367</identifier><identifier>DOI: 10.1346/CCMN.2003.510104</identifier><identifier>CODEN: CLCMAB</identifier><language>eng</language><publisher>Boulder, CO: Clay Minerals Society</publisher><subject>Al-Hydroxy Intercalated Clays ; AL2O3 PILLAR ; Alhics ; aluminum hydroxy ; Basal Spacing ; cation exchange capacity ; Cation Exchange Reaction ; chemical properties ; clay mineralogy ; clay minerals ; crystal chemistry ; dehydration ; dehydroxylation ; Earth sciences ; Earth, ocean, space ; effects ; Exact sciences and technology ; experimental studies ; geochemistry ; Homoionic Clays ; hydroxides ; Intercalated Clays ; ion exchange ; iron hydroxides ; Mineralogy ; Montmorillonite ; Mossbauer spectra ; oxides ; Pillared Clays ; pillars ; rock, sediment, soil ; sed rocks, sediments ; Sedimentary petrology ; sheet silicates ; Silicates ; spectra ; Surface Interactions ; thermal properties ; Thermal Stability</subject><ispartof>Clays and clay minerals, 2003-02, Vol.51 (1), p.33-40</ispartof><rights>GeoRef, Copyright 2020, American Geosciences Institute.</rights><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a456t-7ecab4240aacf7be08fbc17a76994a84359f5bc1b013bc15c28d2866bc2df3573</citedby><cites>FETCH-LOGICAL-a456t-7ecab4240aacf7be08fbc17a76994a84359f5bc1b013bc15c28d2866bc2df3573</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14622610$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Reis, Aluisio Sousa</creatorcontrib><title>Exchangeable ion and thermal treatment effects on basal spacings of Al-hydroxy pillared montmorillonites</title><title>Clays and clay minerals</title><description>Al-hydroxy intercalated clays (ALHICs) obtained from different parent clays were used to investigate the interactions between oligomers and clay surface layers. The thermal stability of ALHICs obtained from natural, Cs-, Ca-, Ba-, Fe-, Cu- or Ce-montmorillonites has been investigated by studying the relationship between basal spacing and calcination temperature. X-ray diffraction has shown that the basal spacing of ALHICs obtained from Cu-montmorillonite calcined at 550°C is 13.4 Å, different from basal spacings of ALHICs obtained from Fe-montmorillonite (16.0 Å) and other parent clays (16.7 Å). Thermograms for AIHICs obtained from natural, Fe- and Ce-montmorillonites displayed distinct steps at 225 and 650°C, attributed to the dehydration of Al13 oligomers, and the dehydroxylation of the surface layer, respectively. By contrast, thermograms of ALHICs obtained from Cu-montmorillonite displayed one step between 250 and 700°C for both dehydration and dehydroxylation. Mossbauer parameters showed that Fe3+ octahedra in octahedral sheets are distorted in pillared interlayered clay (PILC) obtained from Cu-montmorillonite and undistorted in that obtained from Fe-montmorillonite. The difference in thermal stability for the various ALHICs is attributed to the retention of some of the original cations after intercalation with Al13 oligomers, which induces several interactions between the oligomers and the clay surface layers.</description><subject>Al-Hydroxy Intercalated Clays</subject><subject>AL2O3 PILLAR</subject><subject>Alhics</subject><subject>aluminum hydroxy</subject><subject>Basal Spacing</subject><subject>cation exchange capacity</subject><subject>Cation Exchange Reaction</subject><subject>chemical properties</subject><subject>clay mineralogy</subject><subject>clay minerals</subject><subject>crystal chemistry</subject><subject>dehydration</subject><subject>dehydroxylation</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>effects</subject><subject>Exact sciences and technology</subject><subject>experimental studies</subject><subject>geochemistry</subject><subject>Homoionic Clays</subject><subject>hydroxides</subject><subject>Intercalated Clays</subject><subject>ion exchange</subject><subject>iron hydroxides</subject><subject>Mineralogy</subject><subject>Montmorillonite</subject><subject>Mossbauer spectra</subject><subject>oxides</subject><subject>Pillared Clays</subject><subject>pillars</subject><subject>rock, sediment, soil</subject><subject>sed rocks, sediments</subject><subject>Sedimentary petrology</subject><subject>sheet silicates</subject><subject>Silicates</subject><subject>spectra</subject><subject>Surface Interactions</subject><subject>thermal properties</subject><subject>Thermal Stability</subject><issn>0009-8604</issn><issn>1552-8367</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNp1kU1v1DAQhi1EJZbSO8dcOKEs488kJ1StWkBq4dKerYlj76ZK7JXtQpdfj9NU6glL1ozHM4897xDykcKWcqG-7Ha3P7cMgG8lBQriDdlQKVndctW8JRsA6OpWgXhH3qf0AMCU4GxDDldP5oB-b7GfbDUGX6EfqnywccapytFinq3PlXXOmpyqktBjKlfpiGb0-xJx1eVUH05DDE-n6jhOE0Y7VHPweQ6xHIMfs00fyJnDKdmLF3tO7q-v7nbf65tf337sLm9qFFLlurEGe8EEIBrX9BZa1xvaYKO6TmAruOycLJEeKC9GGtYOrFWqN2xwXDb8nMDKNTGkFK3TxzjOGE-agl6U0otSelFKr0qVkk9ryRGTwclF9GZMr3VCMaYolLyva17pu2iC-iE8Rl-a0WYu28wrFZ6XpC8OUI0xL87y0u1_CKN5hixjWqakf0vqaeExCh3rNFUFPFiHj1PWGaPe_9Vp4X1eeXsbkhmtN_ZPiNPwyl1_xBvBFP8HCbCnSA</recordid><startdate>20030201</startdate><enddate>20030201</enddate><creator>Reis, Aluisio Sousa</creator><general>Clay Minerals Society</general><general>The Clay Minerals Society</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20030201</creationdate><title>Exchangeable ion and thermal treatment effects on basal spacings of Al-hydroxy pillared montmorillonites</title><author>Reis, Aluisio Sousa</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a456t-7ecab4240aacf7be08fbc17a76994a84359f5bc1b013bc15c28d2866bc2df3573</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Al-Hydroxy Intercalated Clays</topic><topic>AL2O3 PILLAR</topic><topic>Alhics</topic><topic>aluminum hydroxy</topic><topic>Basal Spacing</topic><topic>cation exchange capacity</topic><topic>Cation Exchange Reaction</topic><topic>chemical properties</topic><topic>clay mineralogy</topic><topic>clay minerals</topic><topic>crystal chemistry</topic><topic>dehydration</topic><topic>dehydroxylation</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>effects</topic><topic>Exact sciences and technology</topic><topic>experimental studies</topic><topic>geochemistry</topic><topic>Homoionic Clays</topic><topic>hydroxides</topic><topic>Intercalated Clays</topic><topic>ion exchange</topic><topic>iron hydroxides</topic><topic>Mineralogy</topic><topic>Montmorillonite</topic><topic>Mossbauer spectra</topic><topic>oxides</topic><topic>Pillared Clays</topic><topic>pillars</topic><topic>rock, sediment, soil</topic><topic>sed rocks, sediments</topic><topic>Sedimentary petrology</topic><topic>sheet silicates</topic><topic>Silicates</topic><topic>spectra</topic><topic>Surface Interactions</topic><topic>thermal properties</topic><topic>Thermal Stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Reis, Aluisio Sousa</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Clays and clay minerals</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Reis, Aluisio Sousa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Exchangeable ion and thermal treatment effects on basal spacings of Al-hydroxy pillared montmorillonites</atitle><jtitle>Clays and clay minerals</jtitle><date>2003-02-01</date><risdate>2003</risdate><volume>51</volume><issue>1</issue><spage>33</spage><epage>40</epage><pages>33-40</pages><issn>0009-8604</issn><eissn>1552-8367</eissn><coden>CLCMAB</coden><abstract>Al-hydroxy intercalated clays (ALHICs) obtained from different parent clays were used to investigate the interactions between oligomers and clay surface layers. The thermal stability of ALHICs obtained from natural, Cs-, Ca-, Ba-, Fe-, Cu- or Ce-montmorillonites has been investigated by studying the relationship between basal spacing and calcination temperature. X-ray diffraction has shown that the basal spacing of ALHICs obtained from Cu-montmorillonite calcined at 550°C is 13.4 Å, different from basal spacings of ALHICs obtained from Fe-montmorillonite (16.0 Å) and other parent clays (16.7 Å). Thermograms for AIHICs obtained from natural, Fe- and Ce-montmorillonites displayed distinct steps at 225 and 650°C, attributed to the dehydration of Al13 oligomers, and the dehydroxylation of the surface layer, respectively. By contrast, thermograms of ALHICs obtained from Cu-montmorillonite displayed one step between 250 and 700°C for both dehydration and dehydroxylation. Mossbauer parameters showed that Fe3+ octahedra in octahedral sheets are distorted in pillared interlayered clay (PILC) obtained from Cu-montmorillonite and undistorted in that obtained from Fe-montmorillonite. The difference in thermal stability for the various ALHICs is attributed to the retention of some of the original cations after intercalation with Al13 oligomers, which induces several interactions between the oligomers and the clay surface layers.</abstract><cop>Boulder, CO</cop><pub>Clay Minerals Society</pub><doi>10.1346/CCMN.2003.510104</doi><tpages>8</tpages></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Al-Hydroxy Intercalated Clays AL2O3 PILLAR Alhics aluminum hydroxy Basal Spacing cation exchange capacity Cation Exchange Reaction chemical properties clay mineralogy clay minerals crystal chemistry dehydration dehydroxylation Earth sciences Earth, ocean, space effects Exact sciences and technology experimental studies geochemistry Homoionic Clays hydroxides Intercalated Clays ion exchange iron hydroxides Mineralogy Montmorillonite Mossbauer spectra oxides Pillared Clays pillars rock, sediment, soil sed rocks, sediments Sedimentary petrology sheet silicates Silicates spectra Surface Interactions thermal properties Thermal Stability |
| title | Exchangeable ion and thermal treatment effects on basal spacings of Al-hydroxy pillared montmorillonites |
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