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- W2096727215 abstract "The successive steps occurring during conversion of methylbutynol (MBOH) on a basic NaX zeolite catalyst were characterized by combined micro-GC and operando DRIFT spectroscopy, associated to TPD-MS experiments. These techniques permit to reveal a very strong and fast initial decrease in MBOH consumption, associated to some water desorption and to a deficit in acetone that is a product formed together with acetylene, in agreement with the basic route. The origin of deactivation, the nature and reactivity of the adsorbed compounds and their relative strengths of adsorption are discussed on the basis of the evolution of the operando DRIFT spectra with time on stream and next upon keeping the used catalyst in static then under flowing N(2). The FTIR signatures of the three different modes of MBOH adsorption are determined and only the mode involving a zeolite acid-base pair is found reactive. Aldolic condensation is identified but solely to a minor extent in flowing conditions of the reaction whereas it is significantly enhanced in static. Thus, the apparent initial deactivation can be ascribed mainly to MBOH adsorption." @default.
- W2096727215 created "2016-06-24" @default.
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- W2096727215 date "2010-01-01" @default.
- W2096727215 modified "2023-10-06" @default.
- W2096727215 title "Mechanism and deactivation process of the conversion of methylbutynol on basic faujasite monitored by operando DRIFTS" @default.
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- W2096727215 doi "https://doi.org/10.1039/b919733h" @default.
- W2096727215 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20066379" @default.
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