Effect of adsorbed impurities on catalytic CO oxidation
The effect of inactive adsorbed impurities on kinetics of catalytic synthesis of carbon dioxide is investigated in the framework of the lattice-gas model. Namely, two cases of equilibrium impurities with fast, compared with the reaction's rate, and slow self dynamics are analyzed. It is revea...
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| Дата: | 2009 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2009
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/119968 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Effect of adsorbed impurities on catalytic CO oxidation / I.S. Bzovska, I.M. Mryglod // Condensed Matter Physics. — 2009. — Т. 12, № 2. — С. 183-191. — Бібліогр.: 15 назв. — англ. |
Репозитарії
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irk-123456789-1199682017-06-11T03:03:59Z Effect of adsorbed impurities on catalytic CO oxidation Bzovska, I.S. Mryglod, I.M. The effect of inactive adsorbed impurities on kinetics of catalytic synthesis of carbon dioxide is investigated in the framework of the lattice-gas model. Namely, two cases of equilibrium impurities with fast, compared with the reaction's rate, and slow self dynamics are analyzed. It is revealed that the adsorbed impurities shift the phase diagram to the region of lower temperatures and higher pressures pCO. In the case of slow impurities the bistable region is narrowed far more than in the case when their dynamics is fast and their distribution on the surface can be assumed to be equilibrium. The critical concentration of impurities at which the bistable region disappears, is found. From analysis of the kinetic equations the condition of the existence of the bifurcation region is analytically obtained. В рамках ґраткової моделi дослiджується вплив неактивних домiшок на кiнетику реакцiї каталiтичного синтезу вуглекислого газу, зокрема аналiзуються випадки рiвноважної домiшки з швидкою (в порiвняннi зi швидкiстю реакцiї) та повiльною власними динамiками. Показано, що домiшки на поверхнi змiщують фазову дiаграму до областi нижчих температур i вищих тискiв pCO. У випадку, коли концентрацiя домiшки змiнюється на поверхнi досить повiльно, область бiстабiльностi звужується значно бiльше, нiж коли динамiка домiшки є швидкою i її розподiл на поверхнi можна вважати рiвноважним. Знайдено критичну концентрацiю домiшок, при якiй ще спостерiгається область бiстабiльностi. З кiнетичних рiвнянь аналiтично знайдено умову iснування областi бiстабiльностi. 2009 Article Effect of adsorbed impurities on catalytic CO oxidation / I.S. Bzovska, I.M. Mryglod // Condensed Matter Physics. — 2009. — Т. 12, № 2. — С. 183-191. — Бібліогр.: 15 назв. — англ. 1607-324X PACS: 05.50.+q, 68.43.-h, 82.65.+r DOI:10.5488/CMP.12.2.183 http://dspace.nbuv.gov.ua/handle/123456789/119968 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
The effect of inactive adsorbed impurities on kinetics of catalytic synthesis of carbon dioxide is investigated
in the framework of the lattice-gas model. Namely, two cases of equilibrium impurities with fast, compared
with the reaction's rate, and slow self dynamics are analyzed. It is revealed that the adsorbed impurities
shift the phase diagram to the region of lower temperatures and higher pressures pCO. In the case of slow
impurities the bistable region is narrowed far more than in the case when their dynamics is fast and their
distribution on the surface can be assumed to be equilibrium. The critical concentration of impurities at which
the bistable region disappears, is found. From analysis of the kinetic equations the condition of the existence
of the bifurcation region is analytically obtained. |
| format |
Article |
| author |
Bzovska, I.S. Mryglod, I.M. |
| spellingShingle |
Bzovska, I.S. Mryglod, I.M. Effect of adsorbed impurities on catalytic CO oxidation Condensed Matter Physics |
| author_facet |
Bzovska, I.S. Mryglod, I.M. |
| author_sort |
Bzovska, I.S. |
| title |
Effect of adsorbed impurities on catalytic CO oxidation |
| title_short |
Effect of adsorbed impurities on catalytic CO oxidation |
| title_full |
Effect of adsorbed impurities on catalytic CO oxidation |
| title_fullStr |
Effect of adsorbed impurities on catalytic CO oxidation |
| title_full_unstemmed |
Effect of adsorbed impurities on catalytic CO oxidation |
| title_sort |
effect of adsorbed impurities on catalytic co oxidation |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2009 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/119968 |
| citation_txt |
Effect of adsorbed impurities on catalytic CO oxidation / I.S. Bzovska, I.M. Mryglod // Condensed Matter Physics. — 2009. — Т. 12, № 2. — С. 183-191. — Бібліогр.: 15 назв. — англ. |
| series |
Condensed Matter Physics |
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2023-10-18T20:35:52Z |
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2023-10-18T20:35:52Z |
| _version_ |
1796150616805867520 |