Chemical reaction of cobalt clusters with ethanol by using FT-ICR mass spectrometer

Abstract

Chemical reaction of cobalt clusters with ethanol (1CH 32CH2OH) has been investigated by using FT-ICR mass spectrometer. Dominant reaction is ethanol chemisorptions but about some size clusters (Con+: 12≤n≤19) complex reactions (involving dehydrogenated chemisorptions) have been observed. By doing isotope experiment (ethanol, ethanol-d, ethanol-d3, ethanol-d6), dissociated two H atoms are specified. This reaction mechanism consists of two steps. At the first step, H atoms are dissociated from methyl (1CH3) and hydroxyl (OH). At the second step, two H atoms are dissociated from methylene (1CH2, 2CH2). On these size clusters hydrogen-deuterium exchange has been observed. This H/D exchange takes place on hydroxyl in case of simple chemisorptions of ethanol, and on methyl in case of dehydrogenated chemisorptions.