Selective dehydroaromatization of methane toward benzene on Re/HZSM-5 catalysts and effects on CO/CO{sub 2} addition

Journal Article · Fri Mar 10 04:00:00 EST 2000 · Journal of Catalysis

DOI:https://doi.org/10.1006/jcat.1999.2748· OSTI ID:20020864

Wang, L; Ohnishi, Ryuichiro; Ichikawa, Masaru

The novel rhenium catalyst Re/HZSM-5 was studied for the catalytic performance of methane dehydrocondensation at 3 atm and 873--1,023 K. It was found that C{sub 2} hydrocarbons and aromatic compounds such as benzene and naphthalene were catalytically obtained with a considerable evolution of hydrogen. High methane conversion (8--12%) and rates of benzene formation obtained on the Re/HZSM-5 catalyst were similar, under the experimental conditions used, to that on Mo/HZSM-5, which has been thought to be a unique catalyst for the reaction. In contrast to the molybdenum carbide (Mo{sub 2}C) as the active phase for the reaction on Mo/HZSM-5, EXAFS and TG/DTA/mass studies suggest that the metallic Re on HZSM-5 is responsible for the catalytic dehydrocondensation of methane toward C{sub 2} hydrocarbons, benzene, and naphthalene. High and stable conversion of methane and high selectivities (70--87% based on carbon) of C{sub 2} hydrocarbons and benzene have been attained in the catalytic dehydrocondensation of methane on Re/HZSM-5 with CO/CO{sub 2} added in methane feed.

• Research Organization: Hokkaido Univ., Sapporo (JP)
• OSTI ID: 20020864
• Journal Information: Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 2 Vol. 190; ISSN 0021-9517; ISSN JCTLA5
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
10 SYNTHETIC FUELS
BENZENE
CARBON DIOXIDE
CARBON MONOXIDE
CATALYTIC EFFECTS
CHEMICAL REACTION YIELD
DEHYDROCYCLIZATION
METHANE
NAPHTHALENE
RHENIUM
SYNTHESIS