TY - GEN
T1 - On the dynamic nature of Mo sites for methane dehydroaromatization
AU - Kapteijn, Freek
AU - Vollmer, Ina
AU - Van der Linden, Bart
AU - Ould-Chikh, Samy
AU - Yarulina, Irina
AU - Olivos Suarez, Alma I.
AU - Gascon, Jorge
PY - 2019
Y1 - 2019
N2 - The mechanism of methane activation on Mo/HZSM-5 is poorly described, despite the great interest in methane dehyd roa romatization (MDA) to replace oil refineries for producing aromatics. It is difficult to assess the exact nature of the active site due to fast coking. By pre-carburizing Mo/HZSM-5 with carbon monoxide, the active site for MDA can be isolated and studied without the formation of coke. This strategy helped us examine how methane is activated on the catalytic site by carrying out MDA using isotopically labelled methane (1 3 C H 4 ) . We show that carbon originating from the preformed carbide is incorporated into the main products of the reaction, ethylene and benzene, demonstrating the dynamic nature of these active sites.
AB - The mechanism of methane activation on Mo/HZSM-5 is poorly described, despite the great interest in methane dehyd roa romatization (MDA) to replace oil refineries for producing aromatics. It is difficult to assess the exact nature of the active site due to fast coking. By pre-carburizing Mo/HZSM-5 with carbon monoxide, the active site for MDA can be isolated and studied without the formation of coke. This strategy helped us examine how methane is activated on the catalytic site by carrying out MDA using isotopically labelled methane (1 3 C H 4 ) . We show that carbon originating from the preformed carbide is incorporated into the main products of the reaction, ethylene and benzene, demonstrating the dynamic nature of these active sites.
KW - Labelling experiments
KW - Methane dehydroaromatization
KW - Mo/HZSM-5
KW - Molybdenum carbide
UR - http://www.scopus.com/inward/record.url?scp=85075726821&partnerID=8YFLogxK
M3 - Conference contribution
T3 - 12th Natural Gas Conversion Symposium 2019
SP - 269
EP - 272
BT - 12th Natural Gas Conversion Symposium 2019
A2 - Schomaecker , Reinhard
PB - AIChE
T2 - 12th Natural Gas Conversion Symposium 2019
Y2 - 2 June 2019 through 6 June 2019
ER -