| prov:value
| - It is believed that these and other gases, such as ozone, chlorine, carbon dioxide, nitric oxide, sulfur dioxide, nitrous oxide, hydrogen sulfide, hydrocyanic acid, and dichlorine monoxide, can also be formed via reaction of an anion with protic species generated during activation of the catalyst by abstraction of an electron from water, chemisorbed hydroxyl, or some other hydrated species.
|