New data on protonation and hydration of perovskite-type layered oxide KCa2Nb3O10

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New data on protonation and hydration of perovskite-type layered oxide KCa₂Nb₃O₁₀. / Yafarova, Liliia V.; Silyukov, Oleg I.; Myshkovskaya, Tatiana D.; Minich, Iana A.; Zvereva, Irina A.

In: Journal of Thermal Analysis and Calorimetry, Vol. 143, No. 1, 01.2021, p. 87 - 93.

Research output: Contribution to journal › Article › peer-review

Author

Yafarova, Liliia V. ; Silyukov, Oleg I. ; Myshkovskaya, Tatiana D. ; Minich, Iana A. ; Zvereva, Irina A. / New data on protonation and hydration of perovskite-type layered oxide KCa₂Nb₃O₁₀. In: Journal of Thermal Analysis and Calorimetry. 2021 ; Vol. 143, No. 1. pp. 87 - 93.

BibTeX

@article{22a76854699441a794e3cdce8c194aa5,

title = "New data on protonation and hydration of perovskite-type layered oxide KCa2Nb3O10",

abstract = "Protonation and hydration processes of layered perovskite-like oxide KCa2Nb3O10 during the reaction with nitric acid solutions with different concentrations were studied by means of TG, STA + MS, XRD, SEM, EDX and ICP methods. It was found that despite the absence of significant changes in crystal structure, treatment of KCa2Nb3O10 with water leads to the partial substitution of K+ with H+ (about 15% exchange), while a number of new hydrated protonated phases HxK1−xCa2Nb3O10·yH2O with higher exchange (50–90%) may be obtained using moderate acid concentrations (0.1–3 M HNO3) varying reaction time. It was shown that production of the fully protonated form requires the minimum 3 M concentration of the acid and 24 h reaction time.",

keywords = "Hydration, Layered perovskite-type oxides, Niobates, Protonation, Thermogravimetry",

author = "Yafarova, {Liliia V.} and Silyukov, {Oleg I.} and Myshkovskaya, {Tatiana D.} and Minich, {Iana A.} and Zvereva, {Irina A.}",

note = "Funding Information: This work was supported by the Russian Science Foundation (Grant No. 19-13-00184). Authors also are grateful to Saint Petersburg State University Research Park. TG and DSC studies were carried out in Center of Thermal Analysis and Calorimetry, XRD study was carried out in Research Centre for X-ray Diffraction Studies, SEM images were obtained in Interdisciplinary Resource Center for Nanotechnology, ICP study was carried out in Center for chemical analysis and materials research. Publisher Copyright: {\textcopyright} 2020, Akad{\'e}miai Kiad{\'o}, Budapest, Hungary. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2021",

month = jan,

doi = "10.1007/s10973-020-09276-9",

language = "English",

volume = "143",

pages = "87 -- 93",

journal = "Journal of Thermal Analysis and Calorimetry",

issn = "1388-6150",

publisher = "Springer Nature",

number = "1",

}

RIS

TY - JOUR

T1 - New data on protonation and hydration of perovskite-type layered oxide KCa2Nb3O10

AU - Yafarova, Liliia V.

AU - Silyukov, Oleg I.

AU - Myshkovskaya, Tatiana D.

AU - Minich, Iana A.

AU - Zvereva, Irina A.

N1 - Funding Information: This work was supported by the Russian Science Foundation (Grant No. 19-13-00184). Authors also are grateful to Saint Petersburg State University Research Park. TG and DSC studies were carried out in Center of Thermal Analysis and Calorimetry, XRD study was carried out in Research Centre for X-ray Diffraction Studies, SEM images were obtained in Interdisciplinary Resource Center for Nanotechnology, ICP study was carried out in Center for chemical analysis and materials research. Publisher Copyright: © 2020, Akadémiai Kiadó, Budapest, Hungary. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2021/1

Y1 - 2021/1

N2 - Protonation and hydration processes of layered perovskite-like oxide KCa2Nb3O10 during the reaction with nitric acid solutions with different concentrations were studied by means of TG, STA + MS, XRD, SEM, EDX and ICP methods. It was found that despite the absence of significant changes in crystal structure, treatment of KCa2Nb3O10 with water leads to the partial substitution of K+ with H+ (about 15% exchange), while a number of new hydrated protonated phases HxK1−xCa2Nb3O10·yH2O with higher exchange (50–90%) may be obtained using moderate acid concentrations (0.1–3 M HNO3) varying reaction time. It was shown that production of the fully protonated form requires the minimum 3 M concentration of the acid and 24 h reaction time.

AB - Protonation and hydration processes of layered perovskite-like oxide KCa2Nb3O10 during the reaction with nitric acid solutions with different concentrations were studied by means of TG, STA + MS, XRD, SEM, EDX and ICP methods. It was found that despite the absence of significant changes in crystal structure, treatment of KCa2Nb3O10 with water leads to the partial substitution of K+ with H+ (about 15% exchange), while a number of new hydrated protonated phases HxK1−xCa2Nb3O10·yH2O with higher exchange (50–90%) may be obtained using moderate acid concentrations (0.1–3 M HNO3) varying reaction time. It was shown that production of the fully protonated form requires the minimum 3 M concentration of the acid and 24 h reaction time.

KW - Hydration

KW - Layered perovskite-type oxides

KW - Niobates

KW - Protonation

KW - Thermogravimetry

UR - http://www.scopus.com/inward/record.url?scp=85078590283&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/a78dbe69-3de4-3915-9a01-7e88527b5f58/

U2 - 10.1007/s10973-020-09276-9

DO - 10.1007/s10973-020-09276-9

M3 - Article

AN - SCOPUS:85078590283

VL - 143

SP - 87

EP - 93

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

SN - 1388-6150

IS - 1

ER -

ID: 69815850