MgCoAl and NiCoAl LDHs synthesized by the hydrothermal urea hydrolysis method: Structural characterization and thermal decomposition
[Display omitted] •We synthesized MgCoAl and NiCoAl LDHs by the urea hydrolysis method.•Aluminum rich and crystalline materials have been formed.•The calcination of the LDHs generated mixed oxides with high surface areas. Layered double hydroxides (LDHs) with Mg/Co/Al and Ni/Co/Al were synthesized f...
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| Veröffentlicht in: | Materials research bulletin 2015-04, Vol.64, p.207-215 |
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| creator | Chagas, L.H. De Carvalho, G.S.G. Do Carmo, W.R. San Gil, R.A.S. Chiaro, S.S.X. Leitão, A.A. Diniz, R. De Sena, L.A. Achete, C.A. |
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•We synthesized MgCoAl and NiCoAl LDHs by the urea hydrolysis method.•Aluminum rich and crystalline materials have been formed.•The calcination of the LDHs generated mixed oxides with high surface areas.
Layered double hydroxides (LDHs) with Mg/Co/Al and Ni/Co/Al were synthesized for the first time by the urea hydrolysis method. The experimental conditions promoted aluminum rich and crystalline materials. The formation of LDHs was investigated by powder X-ray diffraction (XRD), chemical analysis, solid state nuclear magnetic resonance with magic angle spinning (27Al-MAS-NMR), simultaneous thermogravimetric/differential thermal analysis (TGA/DTA), FTIR spectroscopy, scanning electron microscopy (SEM), and N2 adsorption–desorption experiments. A single phase corresponding to LDH could be obtained in all the investigated compositions. Thermal calcination of these LDHs at 500°C resulted in the formation of solid solutions in which Al3+ was dissolved. All the calcined materials have rock-salt like structures and high surface areas. |
| doi_str_mv | 10.1016/j.materresbull.2014.12.062 |
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•We synthesized MgCoAl and NiCoAl LDHs by the urea hydrolysis method.•Aluminum rich and crystalline materials have been formed.•The calcination of the LDHs generated mixed oxides with high surface areas.
Layered double hydroxides (LDHs) with Mg/Co/Al and Ni/Co/Al were synthesized for the first time by the urea hydrolysis method. The experimental conditions promoted aluminum rich and crystalline materials. The formation of LDHs was investigated by powder X-ray diffraction (XRD), chemical analysis, solid state nuclear magnetic resonance with magic angle spinning (27Al-MAS-NMR), simultaneous thermogravimetric/differential thermal analysis (TGA/DTA), FTIR spectroscopy, scanning electron microscopy (SEM), and N2 adsorption–desorption experiments. A single phase corresponding to LDH could be obtained in all the investigated compositions. Thermal calcination of these LDHs at 500°C resulted in the formation of solid solutions in which Al3+ was dissolved. All the calcined materials have rock-salt like structures and high surface areas.</description><identifier>ISSN: 0025-5408</identifier><identifier>EISSN: 1873-4227</identifier><identifier>DOI: 10.1016/j.materresbull.2014.12.062</identifier><language>eng</language><publisher>United States: Elsevier Ltd</publisher><subject>A. Layered compounds ; A. Oxides ; ADSORPTION ; ALUMINIUM COMPOUNDS ; B. Chemical synthesis ; C. Nuclear magnetic resonance (NMR) ; C. X-ray diffraction ; COBALT COMPOUNDS ; DESORPTION ; DIFFERENTIAL THERMAL ANALYSIS ; FOURIER TRANSFORMATION ; HYDROLYSIS ; INFRARED SPECTRA ; MAGNESIUM COMPOUNDS ; MATERIALS SCIENCE ; NICKEL COMPOUNDS ; NUCLEAR MAGNETIC RESONANCE ; OXIDES ; SCANNING ELECTRON MICROSCOPY ; SOLID SOLUTIONS ; SPECTROSCOPY ; TERNARY ALLOY SYSTEMS ; THERMAL GRAVIMETRIC ANALYSIS ; UREA ; X-RAY DIFFRACTION</subject><ispartof>Materials research bulletin, 2015-04, Vol.64, p.207-215</ispartof><rights>2014 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c389t-2d3ce431f6a8ee26624fd89320f5c5ff247c4e40ab7f04c67c4dd76f0d2ec343</citedby><cites>FETCH-LOGICAL-c389t-2d3ce431f6a8ee26624fd89320f5c5ff247c4e40ab7f04c67c4dd76f0d2ec343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0025540814008198$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22475732$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Chagas, L.H.</creatorcontrib><creatorcontrib>De Carvalho, G.S.G.</creatorcontrib><creatorcontrib>Do Carmo, W.R.</creatorcontrib><creatorcontrib>San Gil, R.A.S.</creatorcontrib><creatorcontrib>Chiaro, S.S.X.</creatorcontrib><creatorcontrib>Leitão, A.A.</creatorcontrib><creatorcontrib>Diniz, R.</creatorcontrib><creatorcontrib>De Sena, L.A.</creatorcontrib><creatorcontrib>Achete, C.A.</creatorcontrib><title>MgCoAl and NiCoAl LDHs synthesized by the hydrothermal urea hydrolysis method: Structural characterization and thermal decomposition</title><title>Materials research bulletin</title><description>[Display omitted]
•We synthesized MgCoAl and NiCoAl LDHs by the urea hydrolysis method.•Aluminum rich and crystalline materials have been formed.•The calcination of the LDHs generated mixed oxides with high surface areas.
Layered double hydroxides (LDHs) with Mg/Co/Al and Ni/Co/Al were synthesized for the first time by the urea hydrolysis method. The experimental conditions promoted aluminum rich and crystalline materials. The formation of LDHs was investigated by powder X-ray diffraction (XRD), chemical analysis, solid state nuclear magnetic resonance with magic angle spinning (27Al-MAS-NMR), simultaneous thermogravimetric/differential thermal analysis (TGA/DTA), FTIR spectroscopy, scanning electron microscopy (SEM), and N2 adsorption–desorption experiments. A single phase corresponding to LDH could be obtained in all the investigated compositions. Thermal calcination of these LDHs at 500°C resulted in the formation of solid solutions in which Al3+ was dissolved. All the calcined materials have rock-salt like structures and high surface areas.</description><subject>A. Layered compounds</subject><subject>A. Oxides</subject><subject>ADSORPTION</subject><subject>ALUMINIUM COMPOUNDS</subject><subject>B. Chemical synthesis</subject><subject>C. Nuclear magnetic resonance (NMR)</subject><subject>C. X-ray diffraction</subject><subject>COBALT COMPOUNDS</subject><subject>DESORPTION</subject><subject>DIFFERENTIAL THERMAL ANALYSIS</subject><subject>FOURIER TRANSFORMATION</subject><subject>HYDROLYSIS</subject><subject>INFRARED SPECTRA</subject><subject>MAGNESIUM COMPOUNDS</subject><subject>MATERIALS SCIENCE</subject><subject>NICKEL COMPOUNDS</subject><subject>NUCLEAR MAGNETIC RESONANCE</subject><subject>OXIDES</subject><subject>SCANNING ELECTRON MICROSCOPY</subject><subject>SOLID SOLUTIONS</subject><subject>SPECTROSCOPY</subject><subject>TERNARY ALLOY SYSTEMS</subject><subject>THERMAL GRAVIMETRIC ANALYSIS</subject><subject>UREA</subject><subject>X-RAY DIFFRACTION</subject><issn>0025-5408</issn><issn>1873-4227</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNUMtOwzAQtBBIlMc_WHBOsB3nUW6oPKUCB3q3XHtNXCUxsl2kcObDcShIHDntrHdmxzsInVGSU0Kri03eywjeQ1hvuy5nhPKcspxUbA_NaFMXGWes3kczQliZlZw0h-gohA0hhDd1PUOfj68Ld9VhOWj8ZL_h8vo-4DAOsYVgP0Dj9YgTxu2ovUvA97LDWw9y99KNwQbcQ2ydvsQv0W9V3PpEUa30UqXf2Q8ZrRu-PX71GpTr31yw0-QEHRjZBTj9qcdodXuzWtxny-e7h8XVMlNFM48Z04UCXlBTyQaAVRXjRjfzghFTqtIYxmvFgRO5rg3hqkqd1nVliGagCl4co_PdWheiFUHZCKpVbhhARcGSuqwLlliXO5byLgQPRrx520s_CkrEFLrYiL-hiyl0QZlIoSfx9U4M6Yx3C36ygUGBtn5y0c7-Z80X8i6Vvg</recordid><startdate>20150401</startdate><enddate>20150401</enddate><creator>Chagas, L.H.</creator><creator>De Carvalho, G.S.G.</creator><creator>Do Carmo, W.R.</creator><creator>San Gil, R.A.S.</creator><creator>Chiaro, S.S.X.</creator><creator>Leitão, A.A.</creator><creator>Diniz, R.</creator><creator>De Sena, L.A.</creator><creator>Achete, C.A.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20150401</creationdate><title>MgCoAl and NiCoAl LDHs synthesized by the hydrothermal urea hydrolysis method: Structural characterization and thermal decomposition</title><author>Chagas, L.H. ; De Carvalho, G.S.G. ; Do Carmo, W.R. ; San Gil, R.A.S. ; Chiaro, S.S.X. ; Leitão, A.A. ; Diniz, R. ; De Sena, L.A. ; Achete, C.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c389t-2d3ce431f6a8ee26624fd89320f5c5ff247c4e40ab7f04c67c4dd76f0d2ec343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>A. Layered compounds</topic><topic>A. Oxides</topic><topic>ADSORPTION</topic><topic>ALUMINIUM COMPOUNDS</topic><topic>B. Chemical synthesis</topic><topic>C. Nuclear magnetic resonance (NMR)</topic><topic>C. X-ray diffraction</topic><topic>COBALT COMPOUNDS</topic><topic>DESORPTION</topic><topic>DIFFERENTIAL THERMAL ANALYSIS</topic><topic>FOURIER TRANSFORMATION</topic><topic>HYDROLYSIS</topic><topic>INFRARED SPECTRA</topic><topic>MAGNESIUM COMPOUNDS</topic><topic>MATERIALS SCIENCE</topic><topic>NICKEL COMPOUNDS</topic><topic>NUCLEAR MAGNETIC RESONANCE</topic><topic>OXIDES</topic><topic>SCANNING ELECTRON MICROSCOPY</topic><topic>SOLID SOLUTIONS</topic><topic>SPECTROSCOPY</topic><topic>TERNARY ALLOY SYSTEMS</topic><topic>THERMAL GRAVIMETRIC ANALYSIS</topic><topic>UREA</topic><topic>X-RAY DIFFRACTION</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chagas, L.H.</creatorcontrib><creatorcontrib>De Carvalho, G.S.G.</creatorcontrib><creatorcontrib>Do Carmo, W.R.</creatorcontrib><creatorcontrib>San Gil, R.A.S.</creatorcontrib><creatorcontrib>Chiaro, S.S.X.</creatorcontrib><creatorcontrib>Leitão, A.A.</creatorcontrib><creatorcontrib>Diniz, R.</creatorcontrib><creatorcontrib>De Sena, L.A.</creatorcontrib><creatorcontrib>Achete, C.A.</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Materials research bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chagas, L.H.</au><au>De Carvalho, G.S.G.</au><au>Do Carmo, W.R.</au><au>San Gil, R.A.S.</au><au>Chiaro, S.S.X.</au><au>Leitão, A.A.</au><au>Diniz, R.</au><au>De Sena, L.A.</au><au>Achete, C.A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>MgCoAl and NiCoAl LDHs synthesized by the hydrothermal urea hydrolysis method: Structural characterization and thermal decomposition</atitle><jtitle>Materials research bulletin</jtitle><date>2015-04-01</date><risdate>2015</risdate><volume>64</volume><spage>207</spage><epage>215</epage><pages>207-215</pages><issn>0025-5408</issn><eissn>1873-4227</eissn><abstract>[Display omitted]
•We synthesized MgCoAl and NiCoAl LDHs by the urea hydrolysis method.•Aluminum rich and crystalline materials have been formed.•The calcination of the LDHs generated mixed oxides with high surface areas.
Layered double hydroxides (LDHs) with Mg/Co/Al and Ni/Co/Al were synthesized for the first time by the urea hydrolysis method. The experimental conditions promoted aluminum rich and crystalline materials. The formation of LDHs was investigated by powder X-ray diffraction (XRD), chemical analysis, solid state nuclear magnetic resonance with magic angle spinning (27Al-MAS-NMR), simultaneous thermogravimetric/differential thermal analysis (TGA/DTA), FTIR spectroscopy, scanning electron microscopy (SEM), and N2 adsorption–desorption experiments. A single phase corresponding to LDH could be obtained in all the investigated compositions. Thermal calcination of these LDHs at 500°C resulted in the formation of solid solutions in which Al3+ was dissolved. All the calcined materials have rock-salt like structures and high surface areas.</abstract><cop>United States</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.materresbull.2014.12.062</doi><tpages>9</tpages></addata></record> |
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| subjects | A. Layered compounds A. Oxides ADSORPTION ALUMINIUM COMPOUNDS B. Chemical synthesis C. Nuclear magnetic resonance (NMR) C. X-ray diffraction COBALT COMPOUNDS DESORPTION DIFFERENTIAL THERMAL ANALYSIS FOURIER TRANSFORMATION HYDROLYSIS INFRARED SPECTRA MAGNESIUM COMPOUNDS MATERIALS SCIENCE NICKEL COMPOUNDS NUCLEAR MAGNETIC RESONANCE OXIDES SCANNING ELECTRON MICROSCOPY SOLID SOLUTIONS SPECTROSCOPY TERNARY ALLOY SYSTEMS THERMAL GRAVIMETRIC ANALYSIS UREA X-RAY DIFFRACTION |
| title | MgCoAl and NiCoAl LDHs synthesized by the hydrothermal urea hydrolysis method: Structural characterization and thermal decomposition |
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