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Reactivity of Solids最新文献

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Structure and oxygen-index relations in some superconducting (RE)Ba2Cu3O7−x compounds. Part I 一些超导(RE)Ba2Cu3O7−x化合物的结构和氧指数关系。第一部分
Reactivity of Solids Pub Date : 1989-11-01 DOI: 10.1016/0168-7336(89)80053-1
J. Stȩpień-Damm, T. Morawska-Kowal, Z. Damm
{"title":"Structure and oxygen-index relations in some superconducting (RE)Ba2Cu3O7−x compounds. Part I","authors":"J. Stȩpień-Damm,&nbsp;T. Morawska-Kowal,&nbsp;Z. Damm","doi":"10.1016/0168-7336(89)80053-1","DOIUrl":"10.1016/0168-7336(89)80053-1","url":null,"abstract":"<div><p>It is shown that along with the oxygen loss in yttrium, gadolinum and erbium compounds, (RE)Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>, the orthorhombic distortion of the crystal lattice decreases smoothly and disappears at oxygen index values between 6.3 and 6.4. The unit cell volume expansion that accompanies the oxygen loss is due to a rise in the lattice parameter <em>c</em>, which in the range of 6.3 to 7.0 can be used to estimate the oxygen content of the sample.</p></div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 4","pages":"Pages 325-330"},"PeriodicalIF":0.0,"publicationDate":"1989-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80053-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91429012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The effect of high hydrostatic pressure on the silver azide electrical conductivity 高静水压力对叠氮化银电导率的影响
Reactivity of Solids Pub Date : 1989-11-01 DOI: 10.1016/0168-7336(89)80058-0
G.M. Diamant, A.E. Saprykin, Yu.Yu. Sidorin
{"title":"The effect of high hydrostatic pressure on the silver azide electrical conductivity","authors":"G.M. Diamant,&nbsp;A.E. Saprykin,&nbsp;Yu.Yu. Sidorin","doi":"10.1016/0168-7336(89)80058-0","DOIUrl":"10.1016/0168-7336(89)80058-0","url":null,"abstract":"<div><p>A study on the influence of high hydrostatic pressure on the electrical conductivity of silver azide single crystals at the ranges of temperature 263–373 K and pressure 10<sup>5</sup>−4 × 10<sup>8</sup> Pa is described. Motional and formation activation volumes for intrinsic defects and activation energies of the processes have been determined. The theoretical estimates of the activation volumes in terms of Zener strain-energy model have been made, and were found to be in reasonable agreement with the values obtained from the experiment. The results support the view that silver azide has Frenkel disorder, transport in single cyrstals is generally ionic at low voltage, extrinsic under normal conditions, and occurs by the motion of interstitial ions. Conduction becomes intrinsic at temperatures above ~ 330 K. There are some differences between the data obtained for single crystals and those published for powder samples, which is probably related to the peculiarities of the powders.</p></div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 4","pages":"Pages 375-381"},"PeriodicalIF":0.0,"publicationDate":"1989-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80058-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82314614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Editorial note 编辑注意
Reactivity of Solids Pub Date : 1989-11-01 DOI: 10.1016/0168-7336(89)80067-1
M. Gasgnier
{"title":"Editorial note","authors":"M. Gasgnier","doi":"10.1016/0168-7336(89)80067-1","DOIUrl":"https://doi.org/10.1016/0168-7336(89)80067-1","url":null,"abstract":"","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 4","pages":"Page 422"},"PeriodicalIF":0.0,"publicationDate":"1989-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80067-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136403133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrogen and metals 氢和金属
Reactivity of Solids Pub Date : 1989-11-01 DOI: 10.1016/0168-7336(89)80065-8
{"title":"Hydrogen and metals","authors":"","doi":"10.1016/0168-7336(89)80065-8","DOIUrl":"10.1016/0168-7336(89)80065-8","url":null,"abstract":"","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 4","pages":"Pages 417-419"},"PeriodicalIF":0.0,"publicationDate":"1989-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80065-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113576914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
Thermal decomposition of materials with layered structures 层状结构材料的热分解
Reactivity of Solids Pub Date : 1989-08-01 DOI: 10.1016/0168-7336(89)80043-9
V.B. Okhotnikov, I.P. Babicheva, A.V. Musicantov, T.N. Aleksandrova
{"title":"Thermal decomposition of materials with layered structures","authors":"V.B. Okhotnikov,&nbsp;I.P. Babicheva,&nbsp;A.V. Musicantov,&nbsp;T.N. Aleksandrova","doi":"10.1016/0168-7336(89)80043-9","DOIUrl":"https://doi.org/10.1016/0168-7336(89)80043-9","url":null,"abstract":"<div><p>The kinetics of the isothermal dehydration of single crystals of vermiculite which have a layered structure, have been studied in vacuo of ~ 6.7 × 10<sup>−5</sup> Pa by quartz crystal microbalance. A kinetic model is proposed for the process, which corresponds to gas diffusion from a semi-infinite medium with boundary conditions, and takes into consideration the mass transfer through the “solid-gas” interface. The kinetics can be described in terms of a quasilinear expression in the initial stages and as a first-order equation for greater times. From the experimental data the diffusion coefficients of the interlayer region have been estimated. The values obtained are in agreement with those measured by a quasi-elastic neutron-scattering method.</p></div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 273-287"},"PeriodicalIF":0.0,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80043-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91969078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Shock waves in condensed matter 1987, proceedings of the American physical society topical conference. Monterey, Ca, U.S.A., July 20–23, 1987 (803 pp.) 凝聚态物质中的冲击波，1987，美国物理学会专题会议论文集。蒙特雷，加州，美国，1987年7月20-23日(803页)
Reactivity of Solids Pub Date : 1989-08-01 DOI: 10.1016/0168-7336(89)80049-X
M. Gasgnier
{"title":"Shock waves in condensed matter 1987, proceedings of the American physical society topical conference. Monterey, Ca, U.S.A., July 20–23, 1987 (803 pp.)","authors":"M. Gasgnier","doi":"10.1016/0168-7336(89)80049-X","DOIUrl":"10.1016/0168-7336(89)80049-X","url":null,"abstract":"","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 301-302"},"PeriodicalIF":0.0,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80049-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77958979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mixed Co,Fe oxides prepared by thermal or mechanical treatment of carbonate precursors 碳酸盐前驱体经热或机械处理制备的Co,Fe混合氧化物
Reactivity of Solids Pub Date : 1989-08-01 DOI: 10.1016/0168-7336(89)80040-3
J.M.Jiménez Mateos, J. Morales, J.L. Tirado
{"title":"Mixed Co,Fe oxides prepared by thermal or mechanical treatment of carbonate precursors","authors":"J.M.Jiménez Mateos,&nbsp;J. Morales,&nbsp;J.L. Tirado","doi":"10.1016/0168-7336(89)80040-3","DOIUrl":"10.1016/0168-7336(89)80040-3","url":null,"abstract":"<div><p>Mixed Fe,Co oxides are prepared by thermal or mechanochemical decomposition of mixed carbonate precursors. The thermal decomposition of carbonates at 300°C in air gives single-phase cation-deficient spinels encompassing the whole range of compositions. These samples show high dispersity and have lattice distortions particularly in the range 0.523–0.646 (Co/(Co+Fe)). The oxides prepared at 600°C are mixtures of Co<sub>3</sub>O<sub>4</sub>/CoFe<sub>3</sub>O<sub>4</sub> for that composition interval. A decrease in cation vacancy content and an increase in the unit cell parameters are observed at this temperature. The mechanochemical decomposition of the carbonate precursors takes place after longer grinding times for Co-rich samples, which give Fe,Co-mixed monoxides. The Fe-rich samples give spinel oxides.</p></div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 235-248"},"PeriodicalIF":0.0,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80040-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87493708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
New materials and processes 新材料和新工艺
Reactivity of Solids Pub Date : 1989-08-01 DOI: 10.1016/0168-7336(89)80047-6
{"title":"New materials and processes","authors":"","doi":"10.1016/0168-7336(89)80047-6","DOIUrl":"https://doi.org/10.1016/0168-7336(89)80047-6","url":null,"abstract":"","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 299-300"},"PeriodicalIF":0.0,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80047-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91969079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
Mössbauer spectroscopy studies of iron-graphite catalysts derived from graphite intercalation compounds Mössbauer由石墨插层化合物衍生的铁石墨催化剂的光谱研究
Reactivity of Solids Pub Date : 1989-08-01 DOI: 10.1016/0168-7336(89)80036-1
A.W. Morawski, K. Kałucki, A. Proń, Z. Kucharski, M. Łukasiak, J. Suwalski
{"title":"Mössbauer spectroscopy studies of iron-graphite catalysts derived from graphite intercalation compounds","authors":"A.W. Morawski,&nbsp;K. Kałucki,&nbsp;A. Proń,&nbsp;Z. Kucharski,&nbsp;M. Łukasiak,&nbsp;J. Suwalski","doi":"10.1016/0168-7336(89)80036-1","DOIUrl":"10.1016/0168-7336(89)80036-1","url":null,"abstract":"<div><p>Very active catalysts can be prepared from FeCl<sub>3</sub>-GIC precursors through a two-step reduction and washing with HCl. Mössbauer spectrometry during the first (H<sub>2</sub>) reduction step indicates that Fe<sup>0</sup> in the form of α-Fe is obtained together with two non-equivalent Fe<sup>II</sup> sites. This α-Fe is catalytically inactive and can be readily removed from the system treatment with HCl. The second reduction with potassium vapour transforms the remaining Fe<sup>II</sup> into catalytically active Fe<sup>0</sup> which is strongly resistant to the HCl treatment.</p></div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 199-205"},"PeriodicalIF":0.0,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80036-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77025202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Calendar of forthcoming events 即将举行的活动日历
Reactivity of Solids Pub Date : 1989-08-01 DOI: 10.1016/0168-7336(89)80051-8
{"title":"Calendar of forthcoming events","authors":"","doi":"10.1016/0168-7336(89)80051-8","DOIUrl":"https://doi.org/10.1016/0168-7336(89)80051-8","url":null,"abstract":"","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 305-306"},"PeriodicalIF":0.0,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80051-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136851894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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