| http://www.w3.org/ns/prov#value | - As described in U.S. Pat. No. 3,755,483 to Burress, aromatic hydrocarbons such as benzenes, naphthalenes, anthracenes and substituted derivatives thereof, e.g. toluene and xylene, may be alkylated with alkylating agents such as olefins ethylene, propylene, dodecylene, and formaldehyde, alkyl halides, and alkyl alcohols with 1 to 24 carbons under vapor phase conditions including a reactor inlet tem
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