Articolul precedent |
Articolul urmator |
![]() |
![]() ![]() |
![]() GARCIA-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 | ||||||
|
||||||
![]() |
||||||
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. |
||||||
|
Crossref XML Export
<?xml version='1.0' encoding='utf-8'?> <doi_batch version='4.3.7' xmlns='http://www.crossref.org/schema/4.3.7' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.crossref.org/schema/4.3.7 http://www.crossref.org/schema/deposit/crossref4.3.7.xsd'> <head> <doi_batch_id>ibn-85725</doi_batch_id> <timestamp>1718495016</timestamp> <depositor> <depositor_name>Information Society Development Instiute, Republic of Moldova</depositor_name> <email_address>[email protected]</email_address> </depositor> </head> <body> <collection> <collection_metadata> <full_title>Central and Eastern European Conference on Thermal Analysis and Calorimetry</full_title> </collection_metadata> <collection_issue> <publication_date media_type='print'> <year>2017</year> </publication_date> <isbn>978-3-940237-47-7</isbn> </collection_issue> <collection_article publication_type='full_text'><titles> <title>Thermal behaviour of layered α-titanium phosphates: From the titanium(IV) bis(hydrogenphosphate) monohydrate to an europium(III)-phase via propylamine intercalation</title> </titles> <contributors> <person_name sequence='first' contributor_role='author'> <given_name>Jorge</given_name> <surname>Garcia-Glez</surname> </person_name> <person_name sequence='additional' contributor_role='author'> <given_name>Isabel</given_name> <surname>Iglesias</surname> </person_name> <person_name sequence='additional' contributor_role='author'> <given_name>Belen</given_name> <surname>Alfonso</surname> </person_name> <person_name sequence='additional' contributor_role='author'> <given_name>Jose</given_name> <surname>Huidobro</surname> </person_name> <person_name sequence='additional' contributor_role='author'> <given_name>Aranzazu</given_name> <surname>Espina</surname> </person_name> <person_name sequence='additional' contributor_role='author'> <given_name>Olena</given_name> <surname>Khainakova</surname> </person_name> <person_name sequence='additional' contributor_role='author'> <given_name>Camino</given_name> <surname>Trobajo</surname> </person_name> </contributors> <publication_date media_type='print'> <year>2017</year> </publication_date> <pages> <first_page>351</first_page> <last_page>351</last_page> </pages> </collection_article> </collection> </body> </doi_batch>