Assertion: benzene's use | /r/CapableOf | present safety problems
Facets:
value: through a permeable membrane
type: MANNER
Source sentences:
text: The use of oxygen-carbon monoxide or oxygen-hydrogen mixtures presents safety problems due to the occurrence of explosive mixtures: separate supply of the gases into the reaction medium, for example through a permeable membrane, is an approach that may solve this problem, either by producing hydrogen peroxide in situ  or by using the gas mixture to directly oxidize benzene.