11C-radioisotope labeled methanol conversion over H- and Cs- modified ZSM-5, Beta zeolites and MCM-41 mesoporous molecular sieve

É Sarkadi-Pribóczki*, N. Kumar, T. Salmi, D. Yu Murzin, Z. Kovács

*Korresponderande författare för detta arbete

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

2 Citeringar (Scopus)

Sammanfattning

The Na-MCM-41 mesoporous molecular sieve, Na-ZSM-5 and Na-Beta zeolites have been modified by Cs- and H- using ion-exchange method and characterized by XRD, SEM and nitrogen adsorption. The conversion of methanol was studied over H- and Cs- modified ZSM-5, Beta zeolites and MCM-41 mesoporous molecular sieve. Methanol was in 11C-radioisotope labeled form in-order to follow its conversion during the catalytic process, since the radioactivity method provides a very sensitive detection possibility to investigate the conversion of small amounts of methanol and some intermediates at different reaction times and temperatures. The understanding of reaction mechanism is important for side-chain methylation over Cs-zeolite catalysts by methanol, as they are more selective than other alkali exchanged zeolites (Li, Na and K). The reaction pathway of the transformation of methanol to hydrocarbons and aldehydes has been elaborated.

OriginalspråkEngelska
Sidor (från-till)379-383
Antal sidor5
TidskriftCatalysis Today
Volym100
Utgåva3-4
DOI
StatusPublicerad - 28 feb 2005
MoE-publikationstypA1 Tidskriftsartikel-refererad

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