SYNTHESIS OF ALKYLATED AROMATIC HYDROCARBONS FROM METHANE Russian patent published in 2011 - IPC C07C2/76 C07C2/66 

FIELD: chemistry.

SUBSTANCE: invention relates to methods for synthesis of aromatic hydrocarbons from methane, particularly from natural gas. Described is a method of converting methane into alkylated aromatic hydrocarbons, involving: (a) bringing starting material containing methane into contact with a dehydrocyclisation catalyst in conditions sufficient for converting said methane into aromatic hydrocarbons and obtaining a first exhaust stream containing aromatic hydrocarbons and hydrogen; (b) bringing at least a portion of the said aromatic hydrocarbon from the said first exhaust stream into contact with an alkylating agent in conditions sufficient for alkylating the said aromatic hydrocarbon and obtaining an alkylated aromatic hydrocarbon containing alkylated side chains more than the said aromatic hydrocarbon before alkylation; and (c) reaction of at least a portion of hydrogen from the said first exhaust stream with carbon dioxide or carbon monoxide to obtain a second exhaust stream having lower hydrogen content compared to the said first exhaust stream.

EFFECT: conversion of methane into aromatic compounds to obtain suitable products such as additional methane or alkylating agents.

21 cl, 3 ex, 3 dwg