Synthesis, characterization and catalytic activity of manganese oxidic nano-particles
| dc.contributor.author | Skordilis, C. S. | en |
| dc.contributor.author | Pomonis, P. J. | en |
| dc.date.accessioned | 2015-11-24T16:49:25Z | |
| dc.date.available | 2015-11-24T16:49:25Z | |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/9484 | |
| dc.rights | Default Licence | - |
| dc.subject | n2o decomposition | en |
| dc.subject | ultrafine particles | en |
| dc.subject | la2-xsrxnio4-lambda | en |
| dc.subject | kinetics | en |
| dc.title | Synthesis, characterization and catalytic activity of manganese oxidic nano-particles | en |
| heal.abstract | Manganese oxidic nano-particles have been prepared via hydrolysis of a trinuclear manganese complex [Mn3O(CH3COO)(6)(pyr)(3)]ClO4. The obtained particles are amorphous and crystallize to Mn2O3 at T > 500 degrees C. Their BET specific surface area is 150-200 m(2) g(-1) at 200 degrees C > T > 400 degrees C and diminishes to 50 m(2) g(-1) at 500 degrees C and 10 m(2) g(-1) at 650-700 degrees C. The pore volume distribution of the particles heated at 200 degrees C shows a maximum at 5.5 nm while almost 95% of the pores lies between 4 and 12 nm. In SEM it seems that the obtained particles are almost spherical with diameter 0.1 - 0.2 mu m. The obtained particles are active for the N2O decomposition, which was used as a probe reaction, above 300 degrees C. Activation energies calculated assuming first order kinetics are around 100 kJ/mol. Comparison with other catalysts containing manganese in oxidic form, like perovskites, conventionally prepared manganese oxide by precipitation of Mn(OH)(2) and manganese oxidic nano-particles supported on clay, shows that the activity of the nano-particles, calculated either per unit mass or unit area of active phase, is higher as referred to the other systems. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://A1995BE35H00048 | - |
| heal.journalName | Preparation of Catalysts Vi | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1995 | - |
| heal.publisher | Elsevier | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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