Pressure effects on oxygen interaction with ruthenium catalysts

  • G. V. Speranskaya
  • G. A. Savelieva
  • N. M. Popova
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Abstract

Statistical adsorption and TPD studies of PO2=1.33 and 90,440 Pa and Tads=163–523 K have revealed that Ru oxidation at high pressures begins already at Tads=300 K, while at low ones it starts at 353 K. Temperature increase leads to its surface oxidation at low pressures (1.33 Pa) and to the deep oxidation with the formation of stoichiometric oxides at high pressures (90,4440 Pa).

Keywords

Oxidation Oxygen Physical Chemistry Catalysis High Pressure 
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Abstract

Исследование осуществлялось методами статистической адсорбции и ТПД при PO2=1,33 и 90440 Па и Тадс 163–523 К. Установлено, что при высоком давлении окисление Ru начинается уже при Тадс=300 К, а при низком-с 353 К. Повышение температуры приводит к приповерхностному окислению Ru при низком (1,33 Па), и глубокому с образованием стехиометрических окисловпри высоком (90440 Па) давлениях.

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Copyright information

© Akadémiai Kiadó 1982

Authors and Affiliations

  • G. V. Speranskaya
    • 1
  • G. A. Savelieva
    • 1
  • N. M. Popova
    • 1
  1. 1.Institute of Organic Catalysis and ElectrochemistryAlma-AtaUSSR

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