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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Selective Cracking of Higher Alkenes to Propylene.
 Kolena, J. ; Morávek, P. ; Bortnovský, O. ; Tukač, V. ; Hanika, Jiří
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Means for Catalyst Activity Stabilization of Catalyst for Disproportionation and Transalkylation of Alkylbenzenes
 Hanika, Jiří ; Kolena, J. ; Morávek, P. ; Šimek, J.
Experiences from catalytic transformation of trialkylbenzenes in reaction with toluene catalyzed by zeolite catalysts were summarized in the study. Kinetic investigation of 1,2,4-trimethylbenzene and tri- and tetramethylbenzenes in hydrorafinated C9 pyrolysis fraction transalkylation by toluene at temperature 350 - 450 oC and hydrogen pressure 3 MPa in bench scale tubular reactor was made. A positive effect of nickel component in catalyst pellet on its stability has been demonstrated. Activity of catalyst prepared in the study was compared with that of commercial sample.
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Selective Catalytic Cracking of Higher Alkenes
 Kolena, J. ; Morávek, P. ; Bortnovsky, O. ; Tukač, V. ; Hanika, Jiří
New type of zeolite catalyst of ZSM-5 type partially transformed to acidic form with improved selectivity has been developed in the study. After catalyst modification by cerium ion the selectivity was moreover increased. Catalytic cracking of 1-hexene to propylene was used as a test reaction. Kinetic model parameters of the reaction system were identified by AspenPlus software application. The catalyst deactivation kinetics was investigated too.
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