Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage
In situ X-ray diffraction (XRD) and environmental scanning electron microscope (ESEM) crystallization experiments show oriented growth of magnesium sulfate crystals on a diethylenetriamine-penta-methylene phosphonic acid (DTPMP) template adsorbed onto Iceland spar (calcite, CaCO3) cleavage surfaces....
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Online Access: | https://hdl.handle.net/20.500.11937/9143 https://doi.org/10.1021/cg300744x |
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ftcurtin:oai:espace.curtin.edu.au:20.500.11937/9143 2023-06-11T04:13:12+02:00 Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage Ruiz-Agudo, E. Putnis, Christine Pel, L. Rodriguez-Navarro, C. 2013 restricted https://hdl.handle.net/20.500.11937/9143 https://doi.org/10.1021/cg300744x unknown http://hdl.handle.net/20.500.11937/9143 doi:10.1021/cg300744x Journal Article 2013 ftcurtin https://doi.org/20.500.11937/914310.1021/cg300744x 2023-05-30T19:24:37Z In situ X-ray diffraction (XRD) and environmental scanning electron microscope (ESEM) crystallization experiments show oriented growth of magnesium sulfate crystals on a diethylenetriamine-penta-methylene phosphonic acid (DTPMP) template adsorbed onto Iceland spar (calcite, CaCO3) cleavage surfaces. Epsomite (MgSO4·7H2O) and hexahydrite (MgSO4·6H2O) crystallize (depending on the ambient conditions) in the presence of DTPMP with (010)epsomite// (101Ì.4)calcite and (1Ì.11)hexahydrite// (101Ì.4)calcite, whereas in the absence of DTPMP they show no preferred orientation. On the other hand, sodium sulfate (mirabilite, Na 2SO4·10H2O) nucleates onto a Ca-DTPMP precipitate with (001)mirabilite//(101Ì.4) calcite. In contrast, different sodium sulfate phases crystallize and grow with no preferred crystallographic orientation in the absence of an organic additive. These results allow us to propose a model for the interaction calcite-DTPMP-Na and Mg sulfates based on the template-assisted nucleation and oriented heterogeneous crystallization, mediated by a Ca-precipitate, of inorganic salts on calcitic substrates. This effect results in a (measured) reduction in the critical supersaturation reached by these salts when crystallizing in confined geometries, i.e., a pore, thus resulting in a reduction in crystallization pressure and damage to porous substrates such as building stones. These results have implications in fields where in-pore crystallization of salts results in damage or plugging of the porous network, e.g., cultural heritage conservation and in the oil industry, where phosphonates are used as crystallization inhibitors. © 2012 American Chemical Society. Article in Journal/Newspaper Iceland Curtin University: espace Crystal Growth & Design 13 1 40 51 |
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Curtin University: espace |
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In situ X-ray diffraction (XRD) and environmental scanning electron microscope (ESEM) crystallization experiments show oriented growth of magnesium sulfate crystals on a diethylenetriamine-penta-methylene phosphonic acid (DTPMP) template adsorbed onto Iceland spar (calcite, CaCO3) cleavage surfaces. Epsomite (MgSO4·7H2O) and hexahydrite (MgSO4·6H2O) crystallize (depending on the ambient conditions) in the presence of DTPMP with (010)epsomite// (101Ì.4)calcite and (1Ì.11)hexahydrite// (101Ì.4)calcite, whereas in the absence of DTPMP they show no preferred orientation. On the other hand, sodium sulfate (mirabilite, Na 2SO4·10H2O) nucleates onto a Ca-DTPMP precipitate with (001)mirabilite//(101Ì.4) calcite. In contrast, different sodium sulfate phases crystallize and grow with no preferred crystallographic orientation in the absence of an organic additive. These results allow us to propose a model for the interaction calcite-DTPMP-Na and Mg sulfates based on the template-assisted nucleation and oriented heterogeneous crystallization, mediated by a Ca-precipitate, of inorganic salts on calcitic substrates. This effect results in a (measured) reduction in the critical supersaturation reached by these salts when crystallizing in confined geometries, i.e., a pore, thus resulting in a reduction in crystallization pressure and damage to porous substrates such as building stones. These results have implications in fields where in-pore crystallization of salts results in damage or plugging of the porous network, e.g., cultural heritage conservation and in the oil industry, where phosphonates are used as crystallization inhibitors. © 2012 American Chemical Society. |
format |
Article in Journal/Newspaper |
author |
Ruiz-Agudo, E. Putnis, Christine Pel, L. Rodriguez-Navarro, C. |
spellingShingle |
Ruiz-Agudo, E. Putnis, Christine Pel, L. Rodriguez-Navarro, C. Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage |
author_facet |
Ruiz-Agudo, E. Putnis, Christine Pel, L. Rodriguez-Navarro, C. |
author_sort |
Ruiz-Agudo, E. |
title |
Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage |
title_short |
Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage |
title_full |
Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage |
title_fullStr |
Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage |
title_full_unstemmed |
Template-assisted crystallization of sulfates onto calcite: Implications for the prevention of salt damage |
title_sort |
template-assisted crystallization of sulfates onto calcite: implications for the prevention of salt damage |
publishDate |
2013 |
url |
https://hdl.handle.net/20.500.11937/9143 https://doi.org/10.1021/cg300744x |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://hdl.handle.net/20.500.11937/9143 doi:10.1021/cg300744x |
op_doi |
https://doi.org/20.500.11937/914310.1021/cg300744x |
container_title |
Crystal Growth & Design |
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13 |
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1 |
container_start_page |
40 |
op_container_end_page |
51 |
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1768389931334369280 |