Catalytic and electrical behaviour of Li0.9Ni0.5Co0.5O2−δ below 400°C

Autor:	J. R. Walls, Monica Caldararu, A. Ovenston
Rok vydání:	1998
Předmět:	Chemistry Process Chemistry and Technology Inorganic chemistry Oxide chemistry.chemical_element Conductance Oxygen Catalysis chemistry.chemical_compound Chemisorption Electrical resistivity and conductivity Electrical measurements Carbon monoxide
Zdroj:	Applied Catalysis A: General. 167:225-235
ISSN:	0926-860X
DOI:	10.1016/s0926-860x(97)00314-1
Popis:	The AC electrical properties of the mixed conducting oxide Li 0.9 Ni 0.5 Co 0.5 O 2− δ at 1592 Hz have been monitored during in-situ temperature programmed exposure to a sequence of dry and/or humid gaseous atmospheres between ambient and 400°C. TGA data was correlated with the electrical measurements. Dry oxygen had little effect. Humidity resulted in a significant increase in conductance and capacitance in argon but not in oxygen. Changes in conductance and capacitance arise from changes in both surface conductance and surface dipoles during chemisorption and reaction processes. Following n -type behaviour, in both propylene:air and CO:air treatments, the conductance was increased, indicating reduction of the catalyst surface. Very low conversion ( 0.9 Ni 0.5 Co 0.5 O 2− δ could be a possible catalyst to control pollution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::69c723cac4473a026495cbda29526311 https://doi.org/10.1016/s0926-860x(97)00314-1 Zobrazit plný text záznamu Full Text from ScienceDirect