Chemisorption and Reaction of Oxygen and Carbon-Monoxide on (110) Plane of an Iridium Single-Crystal Тезисы доклада
Конференция |
III Советско-американский симпозиум по катализу 05-07 июл. 1976 , Киев |
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Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Вых. Данные | Год: 1977, Том: 18, Номер: 3, Страницы: 481-482 Страниц : 2 | ||||||
Авторы |
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Организации |
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Реферат:
LEED and Auger electron spectroscopy and thermodesorption with mass spectrometric anal. at 300-800 K and 10-9-10-7 torr were used to study chemisorption and reaction of O and CO2 on the Ir (110) crystal face. O diffusion in near-surface layers of the crystal leads to micro-faceting of the (110) surface with formation of the denser (111) boundaries. At 325 K, undissocd. CO2 is adsorbed with initial sticking coeff. 1 and max. conc. 1015 mol/cm2. Ordered structures are not formed. Desorption spectra show 3 states with 1st order desorption kinetics and activation energies 37, 31, and 26 kcal/mol. O2 is adsorbed at 325 K with initial sticking coeff. 0.26 and max. coverage ∼1015 atoms/cm2 forming a 21D structure. Desorption spectra show 2 states with 2nd order desorption kinetics and activation energies ∼56 and 70 kcal/mol and a 3rd state with temp. max. peak at 1460 K caused by desorption of Ir oxides (1st order rate 1013s-1 with activation energy 89 kcal/mol). At 530 K, CO reacts with O in the adsorbed layer with activation energy 9-10 kcal/mol and pre-exponential factor 10-11cm2s-1 (limited by CO desorption).
Библиографическая ссылка:
Ivanov V.P.
, Boreskov G.K.
, Savchenko V.I.
, Tataurov V.L.
, Egelhoff Jr. W.F.
, Weinberg W.H.
Chemisorption and Reaction of Oxygen and Carbon-Monoxide on (110) Plane of an Iridium Single-Crystal
Kinetics and Catalysis. 1977. V.18. N3. P.481-482. WOS РИНЦ
Chemisorption and Reaction of Oxygen and Carbon-Monoxide on (110) Plane of an Iridium Single-Crystal
Kinetics and Catalysis. 1977. V.18. N3. P.481-482. WOS РИНЦ
Оригинальная:
Иванов В.П.
, Боресков Г.К.
, Савченко В.И.
, Татауров В.Л.
, Эгельхофф В.Ф.
, Вайнберг В.Г.
Исследование хемосорбции и взаимодействия кислорода и окиси углерода на грани (110) монокристалла иридия
Кинетика и катализ. 1977. Т.18. №3. С.575-576. РИНЦ
Исследование хемосорбции и взаимодействия кислорода и окиси углерода на грани (110) монокристалла иридия
Кинетика и катализ. 1977. Т.18. №3. С.575-576. РИНЦ
Идентификаторы БД:
Web of science | WOS:A1977EG45000035 |
РИНЦ | 30628975 |
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Пока нет цитирований