prov:value
| - This applies, for example, to suitable temperatures, pressures, residencetimes, diluent materials such as nitrogen, carbon dioxide, steam, argon, methane or other saturated hydrocarbons, to the presence of moderating agents to control the catalytic action, for example, 1-2-dichloroethane, vinyl chloride, ethyl chloride orchlorinated polyphenyl compounds, to the desirability of employing recycle op
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