The direct conversion of methane into aromatics under non-oxidative conditions has received considerable attention since 1993^[1-3].Mo/HZSM-5 is the best one among the tested catalysts.It is generally accepted that th...The direct conversion of methane into aromatics under non-oxidative conditions has received considerable attention since 1993^[1-3].Mo/HZSM-5 is the best one among the tested catalysts.It is generally accepted that the activation of the C-H bond of methane and initial C-C bond formation occur on Mocarbides formed from the reduction of Mo O,species,while the further transformation of C^(2+)hydrocarbons occurs on the Bronsted acid sites of HZSM-5 zeolite^[4].The unique channel structure of HZSM-5 plays a crucial role in constraining side reactions and controlling the product distribution^[5].The Bronsted acid sites of HZSM-5 are also responsible for the for-mation of carbonaceous deposits[6].展开更多
基金Supported by the Ministry of Science and Technology of China(G1999022406)the BP China Joint Center.
文摘The direct conversion of methane into aromatics under non-oxidative conditions has received considerable attention since 1993^[1-3].Mo/HZSM-5 is the best one among the tested catalysts.It is generally accepted that the activation of the C-H bond of methane and initial C-C bond formation occur on Mocarbides formed from the reduction of Mo O,species,while the further transformation of C^(2+)hydrocarbons occurs on the Bronsted acid sites of HZSM-5 zeolite^[4].The unique channel structure of HZSM-5 plays a crucial role in constraining side reactions and controlling the product distribution^[5].The Bronsted acid sites of HZSM-5 are also responsible for the for-mation of carbonaceous deposits[6].
