start-ver=1.4
cd-journal=joma
no-vol=128
cd-vols=
no-issue=10
article-no=
start-page=843
end-page=846
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=2020101
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Crystal structure of Ca(Fe0.4Si0.6)O2.8 oxygen-deficient perovskite
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The crystal structure of Ca(Fe3+0.4Si0.6)O2.8 oxygen-deficient perovskite phase synthesized at 12 GPa and 1400 °C was studied using synchrotron powder X-ray diffraction. The phase is isostructural to low-pressure phase of Ca(Al0.4Si0.6)O2.8. The structure was refined by the Rietveld method and is consists of a perovskite-like triple-layer of corner-shared (Fe3+,Si)O6 octahedra and a double-layer of SiO4 tetrahedra those are stacked alternatively in the [111] direction of ideal cubic perovskite. Small degree of Fe3+/Si disorder was detected between two octahedral sites. The structure is compared with other oxygen-deficient perovskites.
en-copyright=
kn-copyright=

en-aut-name=KanzakiMasami
en-aut-sei=Kanzaki
en-aut-mei=Masami
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Institute for Planetary Materials, Okayama University
kn-affil=
en-keyword=Crystal structure
kn-keyword=Crystal structure
en-keyword=Rietveld refinement
kn-keyword=Rietveld refinement
en-keyword=Oxygen-deficient perovskite
kn-keyword=Oxygen-deficient perovskite
en-keyword=High-pressure silicate
kn-keyword=High-pressure silicate
END

start-ver=1.4
cd-journal=joma
no-vol=117
cd-vols=
no-issue=1364
article-no=
start-page=411
end-page=414
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2009
dt-pub=20090401
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=The preparation and characterization of TiO2/ZrO2 composites doped with PMA/PWA
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A new class of glass composite membranes of various compositions was prepared via a sol-gel technique. The membranes, consisting of (phophotungsticacid/phosphomolybdicacid) PWA/PMA-P2O5-SiO2 mixed with either ZrO2 or TiO2 displayed varying properties depending on their composition and mode of fabrication. The structure and property of the obtained glass ceramic composite membranes were investigated by FTIR, TG/DTA and textural analysis. The results included good mechanical, textural and thermal properties and the materials were deemed to be suitable electrolytes for fuel cell applications.
en-copyright=
kn-copyright=

en-aut-name=UmaThanganathan
en-aut-sei=Uma
en-aut-mei=Thanganathan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=NogamiMasayuki
en-aut-sei=Nogami
en-aut-mei=Masayuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Materials Science and Engineering, Nagoya Institute of Technology

affil-num=2
en-affil=
kn-affil=Department of Materials Science and Engineering, Nagoya Institute of Technology
en-keyword=Glass
kn-keyword=Glass
en-keyword=Heteropolyacids
kn-keyword=Heteropolyacids
en-keyword=FTIR
kn-keyword=FTIR
en-keyword=Thermal
kn-keyword=Thermal
en-keyword=Textural
kn-keyword=Textural
END

start-ver=1.4
cd-journal=joma
no-vol=113
cd-vols=
no-issue=1313
article-no=
start-page=44
end-page=50
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2005
dt-pub=200501
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=酸化物ガラスの塩基度と XPS による O1s 化学シフトの相関に関する考察
kn-title=Consideration on the Correlation between Basicity of Oxide Glasses and O1s Chemical Shift in XPS
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=O1s binding energy measured by X-ray photoelectron spectroscopy (XPS) is candidate as a new tool to determine a new scale of Lewis basicity of oxide ions in glass. Some mathematical expressions for the basicity or XPS chemical shift, such as charge parameter and optical basicity, were compared with the experimental O1s binding energy in binary alkali oxide glasses. The expressions so far in use needed some modification in parameters. A new empirical expression introduced in this paper gives a new concept and universal scale of basicity.
en-copyright=
kn-copyright=

en-aut-name=NanbaTokuro
en-aut-sei=Nanba
en-aut-mei=Tokuro
kn-aut-name=難波徳郎
kn-aut-sei=難波
kn-aut-mei=徳郎
aut-affil-num=1
ORCID=

en-aut-name=MiuraYoshinari
en-aut-sei=Miura
en-aut-mei=Yoshinari
kn-aut-name=三浦嘉也
kn-aut-sei=三浦
kn-aut-mei=嘉也
aut-affil-num=2
ORCID=

en-aut-name=SakidaShinichi
en-aut-sei=Sakida
en-aut-mei=Shinichi
kn-aut-name=崎田真一
kn-aut-sei=崎田
kn-aut-mei=真一
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Environmental Chemistry and Materials, Okayama University

affil-num=2
en-affil=
kn-affil=Department of Environmental Chemistry and Materials, Okayama University

affil-num=3
en-affil=
kn-affil=Health and Environment Center, Okayama University
en-keyword=XPS
kn-keyword=XPS
en-keyword=Basicity
kn-keyword=Basicity
en-keyword=Glass
kn-keyword=Glass
en-keyword=O1s binding energy
kn-keyword=O1s binding energy
en-keyword=Chemical shift
kn-keyword=Chemical shift
END

start-ver=1.4
cd-journal=joma
no-vol=116
cd-vols=
no-issue=1350
article-no=
start-page=220
end-page=223
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2008
dt-pub=200802
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Chemical recycling of inorganic wastes by using phase separation of glass
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A chemical recycling process using phase separation of glass was applied to a granulated blast furnace slag with high CaO content. Glasses were prepared by adding B(2)O(3) to the slag in order to promote phase separation, and the glasses were heat-treated above glass transition temperature. In the subsequent acid-treatment, however, gelation due to the elution of SiO(2) phase containing CaO occurred, not obtaining high SiO(2) solids. Then, pretreatment was introduced to reduce CaO content in slag, where the raw slag was briefly washed in acid. The slag glasses prepared from the pretreated slag were commonly phase-separated by heat-treatment regardless of B(2)O(3) content. After subsequent acid-treatment, colorless insoluble solids were successfully recovered. The end products consist of 70-90 mass% SiO(2), and coloring ions such as Mn, Fe and Cr were almost completely removed from the slag glasses. Reutilization as raw materials for glass is expected.
en-copyright=
kn-copyright=

en-aut-name=NanbaTokuro
en-aut-sei=Nanba
en-aut-mei=Tokuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=MikamiShuhei
en-aut-sei=Mikami
en-aut-mei=Shuhei
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=ImaokaTakuya
en-aut-sei=Imaoka
en-aut-mei=Takuya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=SakidaShinichi
en-aut-sei=Sakida
en-aut-mei=Shinichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=MiuraYoshinari
en-aut-sei=Miura
en-aut-mei=Yoshinari
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University

affil-num=2
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University

affil-num=3
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University

affil-num=4
en-affil=
kn-affil=Health and Environment Center, Okayama University

affil-num=5
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University
en-keyword=Blast furnace slag
kn-keyword=Blast furnace slag
en-keyword=Waste recycling
kn-keyword=Waste recycling
en-keyword=Chemical recycling
kn-keyword=Chemical recycling
en-keyword=Phase separation
kn-keyword=Phase separation
en-keyword=Glass
kn-keyword=Glass
END

start-ver=1.4
cd-journal=joma
no-vol=117
cd-vols=
no-issue=1371
article-no=
start-page=1195
end-page=1198
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2009
dt-pub=200911
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Chemical recycling of municipal waste slag by using phase separation
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A chemical recycling method by using phase separation was applied to municipal waste slags. Glasses were prepared from incineration ash and ash-melted slag, where B(2)O(3) was added to promote phase separation. The glasses were heat-treated at temperatures higher than their glass transition temperatures, and they were soaked in hydrochloric acid, leaching CaO, Fe(2)O(3), K(2)O, and S. Transparent and colorless solids containing ca. 80 mass% of SiO(2) were successfully obtained as residues. It was suggested that phase separation took place not in the heat-treatment but in the vitrification process, and further characterizations are however required to investigate the phenomena at microscopic levels in the recycling processes.
en-copyright=
kn-copyright=

en-aut-name=NanbaTokuro
en-aut-sei=Nanba
en-aut-mei=Tokuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=KurodaYutaro
en-aut-sei=Kuroda
en-aut-mei=Yutaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=SakidaShinichi
en-aut-sei=Sakida
en-aut-mei=Shinichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=BeninoYasuhiko
en-aut-sei=Benino
en-aut-mei=Yasuhiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University

affil-num=2
en-affil=
kn-affil=Faculty of Environmental Science and Technology, Okayama University

affil-num=3
en-affil=
kn-affil=Environmental Management Center, Okayama University

affil-num=4
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University
en-keyword=Municipal waste slag
kn-keyword=Municipal waste slag
en-keyword=Waste recycling
kn-keyword=Waste recycling
en-keyword=Chemical recycling
kn-keyword=Chemical recycling
en-keyword=Glass
kn-keyword=Glass
END

start-ver=1.4
cd-journal=joma
no-vol=118
cd-vols=
no-issue=1379
article-no=
start-page=603
end-page=607
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2010
dt-pub=201007
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Phase separation of borosilicate glass containing sulfur
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=A 10Na(2)S?30B(2)O(3)?60SiO(2) (mol %) glass was prepared, and the changes in glass structure and chemical state of sulfur caused by phase separation were investigated. In the as-prepared and heat-treated glasses, sulfur was present as S(2)? anion and polysulfide S(2)? and S(3)? anions, and Si?S and B?S bonds were not confirmed. A phase separation by spinodal decomposition was observed after heat-treatment, where sulfur was preferentially distributed to borate-rich phase. Even after the phase separation, formation of non-bridging oxygen was not recognized. The preferential distribution of sulfur anions in the present glass was explainable on the basis of the change in population of sodium ions, which compensated the negatively-charged sulfur anions.
en-copyright=
kn-copyright=

en-aut-name=SaikiKeiji
en-aut-sei=Saiki
en-aut-mei=Keiji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SakidaShinichi
en-aut-sei=Sakida
en-aut-mei=Shinichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=BeninoYasuhiko
en-aut-sei=Benino
en-aut-mei=Yasuhiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=NanbaTokuro
en-aut-sei=Nanba
en-aut-mei=Tokuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University

affil-num=2
en-affil=
kn-affil=Environmental Management Center, Okayama University

affil-num=3
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University

affil-num=4
en-affil=
kn-affil=Graduate School of Environmental Science, Okayama University
en-keyword=Phase separation
kn-keyword=Phase separation
en-keyword=Borosilicate glass
kn-keyword=Borosilicate glass
en-keyword=Chemical state of sulfur
kn-keyword=Chemical state of sulfur
en-keyword=Glass structure
kn-keyword=Glass structure
END