caa a22 4500 463252926 CHVBK 20180405153345.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10562-007-9035-7 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9035-7 Radioisotopic tracing of methanol transformation using 11C-labelled methanol over copper ion-exchanged H-ZSM-5, H-Beta and H-MCM-41 [Elektronische Daten] [É. Sarkadi-Pribóczki, N. Kumar, V. Nieminen, Z. Kovács, D. Murzin] Short half-life 11C-radioisotope tracer in methanol form was used to study the transformation of methanol over copper ion-exchanged H-ZSM-5, H-Beta and H-MCM-41 catalysts. The progresses of adsorption and desorption as well as methanol transformation were followed by radiodetection. The reaction products were analyzed by radio-gas chromatography. The GC analysis was completed with a radiodetector that could distinguish the radiolabelled derivates from other non-radioactive compounds, reagents or impurities. The radiodetector can be more sensitive to detect smaller amount of compound than the thermal conductivity detector or flame ionization detector since the intensity of a radio-signal is independent on thermal conductivity or ionization energy of compounds. The copper introduction into the catalysts had an inhibitory effect on the reaction to proceed further from the equilibration with the methanol and dimethyl ether resulting in hydrocarbons C3-C6. Presence of copper also allowed a possible reaction route for methanol to give formaldehyde and methyl formate. Springer Science+Business Media, LLC, 2007 methanol nationallicence 11C-radioisotopic tracer study nationallicence ZSM-5 nationallicence Beta nationallicence MCM-41 nationallicence copper nationallicence ion-exchange nationallicence Sarkadi-Pribóczki É. Institute of Nuclear Research of the Hungarian Academy of Sciences, H-4001, Debrecen, Hungary aut Kumar N. Laboratory of Industrial Chemistry, Process Chemistry Centre, Åbo Akademi University, FIN-20500, Åbo/Turku, Finland aut Nieminen V. Laboratory of Industrial Chemistry, Process Chemistry Centre, Åbo Akademi University, FIN-20500, Åbo/Turku, Finland aut Kovács Z. Institute of Nuclear Research of the Hungarian Academy of Sciences, H-4001, Debrecen, Hungary aut Murzin D. Laboratory of Industrial Chemistry, Process Chemistry Centre, Åbo Akademi University, FIN-20500, Åbo/Turku, Finland aut Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 114/1-2(2007-03-01), 17-23 1011-372X 114:1-2<17 2007 114 10562 https://doi.org/10.1007/s10562-007-9035-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9035-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sarkadi-Pribóczki É. Institute of Nuclear Research of the Hungarian Academy of Sciences, H-4001, Debrecen, Hungary aut NATIONALLICENCE 700 1- Kumar N. Laboratory of Industrial Chemistry, Process Chemistry Centre, Åbo Akademi University, FIN-20500, Åbo/Turku, Finland aut NATIONALLICENCE 700 1- Nieminen V. Laboratory of Industrial Chemistry, Process Chemistry Centre, Åbo Akademi University, FIN-20500, Åbo/Turku, Finland aut NATIONALLICENCE 700 1- Kovács Z. Institute of Nuclear Research of the Hungarian Academy of Sciences, H-4001, Debrecen, Hungary aut NATIONALLICENCE 700 1- Murzin D. Laboratory of Industrial Chemistry, Process Chemistry Centre, Åbo Akademi University, FIN-20500, Åbo/Turku, Finland aut NATIONALLICENCE 773 0- Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 114/1-2(2007-03-01), 17-23 1011-372X 114:1-2<17 2007 114 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer