Investigation of travelling waves on catalytic wires

✍ Scribed by V. Barelko; I.I. Kurochka; A.G. Merzhanov; K.G. Shkadinskii

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 663 KB
• Volume: 33
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(78)85169-0

✦ Synopsis

Equations governing the transient behavlour of a catalflc reachon occurrmg on a catalyst wue are formulated A simple transformation of vanables d proposed which makes IC possible to develop m analy~al form an expressron for the velocity of a travellmg wave Thrs expression allows also to determine the dlrechon of the wave propagation A detaded dIscussIon of the underlymg assumptions 1s performed It IS shown that the existence of a travelhng wave IS associated with the occurrence of multlple steady states To verify the theoretlcal results the catalytic oxidation of ammomum on a Pt wue was investigated Two types of travelhng waves were expenmentally observed (I) travelhng wave which results m a transItion of kmetlc regime mto a dlffuslon regune (II) travelhng wave which results m a transltlon of ddfuslon regime into a kmetnz regime For the condltlons of zero velocity of wave propagation a great number of steady states were expenmentally observed It IS shown that the expenmental observations can be explamed by the theory suggested