| Articolul precedent |
| Articolul urmator |
 |
 456 0 |
 SM ISO690:2012GARCIA-GLEZ, Jorge, IGLESIAS, Isabel, ALFONSO, Belén, HUIDOBRO, José, ESPINA, Aránzazu, KHAINAKOVA, Olena, TROBAJO, Camino. Thermal behaviour of layered α-titanium phosphates: From the titanium(IV) bis(hydrogenphosphate) monohydrate to an europium(III)-phase via propylamine intercalation. In: Central and Eastern European Conference on Thermal Analysis and Calorimetry, Ed. 4, 28-31 august 2017, Chişinău. Germany: Academica Greifswald, 2017, Editia 4, p. 351. ISBN 978-3-940237-47-7. |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
| Central and Eastern European Conference on Thermal Analysis and Calorimetry Editia 4, 2017 |
||||||
|
Conferința "Central and Eastern European Conference" 4, Chişinău, Moldova, 28-31 august 2017 | ||||||
|
||||||
| Pag. 351-351 | ||||||
|
||||||
 Descarcă PDF |
||||||
| Rezumat | ||||||
α-Ti(HPO4)2·H2O (α-TiP) [1] and its propylamine intercalation product, αTi(HPO4)2·2C3H7NH2·H2O (α-TiPPr) [2], have been previously both synthesized and characterized. On the other hand, Eu3+ is often considered as a chemical analogue for trivalent heavy metals, lanthanides and also actinides (such as Np, Am, Cm and Pu, radionuclides found in high-level radioactive waste produced during the nuclear fuel cycle) [3]. In this way, in our Lab, the sorption capacity for europium(III) of layered titanium(IV) phosphates was investigated, and this purpose was accomplished by treating α-TiP and α-TiPPr with europium(III) nitrate solutions at different concentrations until the equilibrium is reached [4]. All samples were characterized, among others, by powder X-ray diffraction (PXRD), scanning and transmission electron microscopies (SEM, TEM, STEM-EDX, SAED), thermogravimetric analysis (TGA), and photoluminescence (PL) measurements. The results show that the Eu3+ uptake is limited to surface when α-TiP is used as sorbent. Nevertheless, the Eu-retention is considerably enhanced with α-TiPPr as a consequence of an ion-exchange process into the interlayer space of the layered titanium phosphate (involving propylammonium cations, C3H7NH3+, and hexahydrate europium(III) species, [Eu(H2O)6]3+), and the crystal structure of a hypothetical final product, α-[Eu(H2O)6]2/3Ti(PO4)2·[(H2O)6]1/3, has been proposed by using DFT calculations. This contribution reports the solid-state-NMR characterization (1H, 14C, and 31P) of the three aforementioned compounds (α-Ti(HPO4)2·H2O, α-Ti(HPO4)2·2C3H7NH2·H2O, and α[Eu(H2O)6]2/3Ti(PO4)2·[(H2O)6]1/3), and the description of the kinetic features for their thermooxidative decomposition processes. |
||||||
|
Cerif XML Export
<?xml version='1.0' encoding='utf-8'?> <CERIF xmlns='urn:xmlns:org:eurocris:cerif-1.5-1' xsi:schemaLocation='urn:xmlns:org:eurocris:cerif-1.5-1 http://www.eurocris.org/Uploads/Web%20pages/CERIF-1.5/CERIF_1.5_1.xsd' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' release='1.5' date='2012-10-07' sourceDatabase='Output Profile'> <cfResPubl> <cfResPublId>ibn-ResPubl-85725</cfResPublId> <cfResPublDate>2017</cfResPublDate> <cfVol>Editia 4</cfVol> <cfStartPage>351</cfStartPage> <cfISBN>978-3-940237-47-7</cfISBN> <cfURI>https://ibn.idsi.md/ro/vizualizare_articol/85725</cfURI> <cfTitle cfLangCode='EN' cfTrans='o'>Thermal behaviour of layered α-titanium phosphates: From the titanium(IV) bis(hydrogenphosphate) monohydrate to an europium(III)-phase via propylamine intercalation</cfTitle> <cfAbstr cfLangCode='EN' cfTrans='o'><p>α-Ti(HPO4)2·H2O (α-TiP) [1] and its propylamine intercalation product, αTi(HPO4)2·2C3H7NH2·H2O (α-TiPPr) [2], have been previously both synthesized and characterized. On the other hand, Eu3+ is often considered as a chemical analogue for trivalent heavy metals, lanthanides and also actinides (such as Np, Am, Cm and Pu, radionuclides found in high-level radioactive waste produced during the nuclear fuel cycle) [3]. In this way, in our Lab, the sorption capacity for europium(III) of layered titanium(IV) phosphates was investigated, and this purpose was accomplished by treating α-TiP and α-TiPPr with europium(III) nitrate solutions at different concentrations until the equilibrium is reached [4]. All samples were characterized, among others, by powder X-ray diffraction (PXRD), scanning and transmission electron microscopies (SEM, TEM, STEM-EDX, SAED), thermogravimetric analysis (TGA), and photoluminescence (PL) measurements. The results show that the Eu3+ uptake is limited to surface when α-TiP is used as sorbent. Nevertheless, the Eu-retention is considerably enhanced with α-TiPPr as a consequence of an ion-exchange process into the interlayer space of the layered titanium phosphate (involving propylammonium cations, C3H7NH3+, and hexahydrate europium(III) species, [Eu(H2O)6]3+), and the crystal structure of a hypothetical final product, α-[Eu(H2O)6]2/3Ti(PO4)2·[(H2O)6]1/3, has been proposed by using DFT calculations. This contribution reports the solid-state-NMR characterization (1H, 14C, and 31P) of the three aforementioned compounds (α-Ti(HPO4)2·H2O, α-Ti(HPO4)2·2C3H7NH2·H2O, and α[Eu(H2O)6]2/3Ti(PO4)2·[(H2O)6]1/3), and the description of the kinetic features for their thermooxidative decomposition processes.</p></cfAbstr> <cfResPubl_Class> <cfClassId>eda2d9e9-34c5-11e1-b86c-0800200c9a66</cfClassId> <cfClassSchemeId>759af938-34ae-11e1-b86c-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfResPubl_Class> <cfResPubl_Class> <cfClassId>e601872f-4b7e-4d88-929f-7df027b226c9</cfClassId> <cfClassSchemeId>40e90e2f-446d-460a-98e5-5dce57550c48</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfResPubl_Class> <cfPers_ResPubl> <cfPersId>ibn-person-67972</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-67973</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-67974</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-67975</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-67976</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-67977</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfPers_ResPubl> <cfPers_ResPubl> <cfPersId>ibn-person-67978</cfPersId> <cfClassId>49815870-1cfe-11e1-8bc2-0800200c9a66</cfClassId> <cfClassSchemeId>b7135ad0-1d00-11e1-8bc2-0800200c9a66</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> </cfPers_ResPubl> </cfResPubl> <cfPers> <cfPersId>ibn-Pers-67972</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-67972-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> <cfFamilyNames>Garcia-Glez</cfFamilyNames> <cfFirstNames>Jorge</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-67973</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-67973-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> <cfFamilyNames>Iglesias</cfFamilyNames> <cfFirstNames>Isabel</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-67974</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-67974-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> <cfFamilyNames>Alfonso</cfFamilyNames> <cfFirstNames>Belén</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-67975</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-67975-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> <cfFamilyNames>Huidobro</cfFamilyNames> <cfFirstNames>José</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-67976</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-67976-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> <cfFamilyNames>Espina</cfFamilyNames> <cfFirstNames>Aránzazu</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-67977</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-67977-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> <cfFamilyNames>Khainakova</cfFamilyNames> <cfFirstNames>Olena</cfFirstNames> </cfPersName_Pers> </cfPers> <cfPers> <cfPersId>ibn-Pers-67978</cfPersId> <cfPersName_Pers> <cfPersNameId>ibn-PersName-67978-3</cfPersNameId> <cfClassId>55f90543-d631-42eb-8d47-d8d9266cbb26</cfClassId> <cfClassSchemeId>7375609d-cfa6-45ce-a803-75de69abe21f</cfClassSchemeId> <cfStartDate>2017T24:00:00</cfStartDate> <cfFamilyNames>Trobajo</cfFamilyNames> <cfFirstNames>Camino</cfFirstNames> </cfPersName_Pers> </cfPers> </CERIF>
|
|
|
