Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe Materials
Thermal decomposition of [Co(NH3)6][Fe(C2O4)3]∙3H2O in argon atmosphere, at a low heating rate (3°/min), and in large amounts of the initial complex (~0.1 mole), has been studied. It was possible to distinguish four decomposition steps upon heating: In the temperature range of 50–1...
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| Online Access: | http://www.mdpi.com/1996-1944/12/2/221 |
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doaj-53ec4bb563614fe79d12840e99917ed82020-11-24T21:13:28ZengMDPI AGMaterials1996-19442019-01-0112222110.3390/ma12020221ma12020221Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe MaterialsDenis P. Domonov0Sophia I. Pechenyuk1Yulia P. Semushina2Kirill V. Yusenko3I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of RAS KSC (ICTREMR), Akademgorodok, 26a, Apatity, Murmansk region 184209, RussiaI.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of RAS KSC (ICTREMR), Akademgorodok, 26a, Apatity, Murmansk region 184209, RussiaI.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of RAS KSC (ICTREMR), Akademgorodok, 26a, Apatity, Murmansk region 184209, RussiaBAM Federal Institute of Materials Research and Testing, Richard-Willstätter Str. 11, D-12489 Berlin, GermanyThermal decomposition of [Co(NH3)6][Fe(C2O4)3]∙3H2O in argon atmosphere, at a low heating rate (3°/min), and in large amounts of the initial complex (~0.1 mole), has been studied. It was possible to distinguish four decomposition steps upon heating: In the temperature range of 50–100 °C—the loss of crystal water; 100–190 °C—stability region of dehydrated complex; 230–270 °C—the range of stability of intermediate phase with the formula CoFe(NH3)2(C2O4)2; 270–350 °C—thermal decomposition of the intermediate with the formation of metallic products and further air oxidation with the formation of Co1.5Fe1.5O4. Catalytic properties of thermolysis products were tested in the decomposition reaction of H2O2 (inactive), oxidation of acetone (average activity), and decomposition of ammonium perchlorate (highly active).http://www.mdpi.com/1996-1944/12/2/221double complex saltscoordination spherecatalystsingle-source precursorthermal decomposition |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Denis P. Domonov Sophia I. Pechenyuk Yulia P. Semushina Kirill V. Yusenko |
| spellingShingle |
Denis P. Domonov Sophia I. Pechenyuk Yulia P. Semushina Kirill V. Yusenko Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe Materials Materials double complex salts coordination sphere catalyst single-source precursor thermal decomposition |
| author_facet |
Denis P. Domonov Sophia I. Pechenyuk Yulia P. Semushina Kirill V. Yusenko |
| author_sort |
Denis P. Domonov |
| title |
Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe Materials |
| title_short |
Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe Materials |
| title_full |
Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe Materials |
| title_fullStr |
Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe Materials |
| title_full_unstemmed |
Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]∙3H2O as a Route to Access Catalytically Active Co-Fe Materials |
| title_sort |
solid-state transformations in inner coordination sphere of [co(nh3)6][fe(c2o4)3]∙3h2o as a route to access catalytically active co-fe materials |
| publisher |
MDPI AG |
| series |
Materials |
| issn |
1996-1944 |
| publishDate |
2019-01-01 |
| description |
Thermal decomposition of [Co(NH3)6][Fe(C2O4)3]∙3H2O in argon atmosphere, at a low heating rate (3°/min), and in large amounts of the initial complex (~0.1 mole), has been studied. It was possible to distinguish four decomposition steps upon heating: In the temperature range of 50–100 °C—the loss of crystal water; 100–190 °C—stability region of dehydrated complex; 230–270 °C—the range of stability of intermediate phase with the formula CoFe(NH3)2(C2O4)2; 270–350 °C—thermal decomposition of the intermediate with the formation of metallic products and further air oxidation with the formation of Co1.5Fe1.5O4. Catalytic properties of thermolysis products were tested in the decomposition reaction of H2O2 (inactive), oxidation of acetone (average activity), and decomposition of ammonium perchlorate (highly active). |
| topic |
double complex salts coordination sphere catalyst single-source precursor thermal decomposition |
| url |
http://www.mdpi.com/1996-1944/12/2/221 |
| work_keys_str_mv |
AT denispdomonov solidstatetransformationsininnercoordinationsphereofconh36fec2o433h2oasaroutetoaccesscatalyticallyactivecofematerials AT sophiaipechenyuk solidstatetransformationsininnercoordinationsphereofconh36fec2o433h2oasaroutetoaccesscatalyticallyactivecofematerials AT yuliapsemushina solidstatetransformationsininnercoordinationsphereofconh36fec2o433h2oasaroutetoaccesscatalyticallyactivecofematerials AT kirillvyusenko solidstatetransformationsininnercoordinationsphereofconh36fec2o433h2oasaroutetoaccesscatalyticallyactivecofematerials |
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