Naslov
A teoretic study of side by side deactivation mechanism developped on the model reaction of benzene hydrogenation over Ni-SiO2-Al2O3

Autori
Rušić, Davor ; Svilović Sandra

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XVII. hrvatski skup kemičara i kemijskih inženjera / Vicković, Ivan - Osijek : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Hrvatsko kemijsko drustvo, 2001

ISBN
953-6894-05-x

Skup
XVII. hrvatski skup kemičara i kemijskih inženjera sažetci

Mjesto i datum
Osijek, Hrvatska, 10.06.2001. - 13.06.2001

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
deactivation; benzene hydrogenation

Sažetak
A theoretic study of side-by-side deactivation mechanism suggests a mathematical model development, which is based on the model reaction of benzene hydrogenation. The reaction took place in a differential reactor over Ni-SiO2-Al2O3 catalyst pellet (cylindrically shaped), in diffusion region, with temperatures ranging from 403 to 448 K, under atmospheric pressure. The deactivation process has been simulated with the introduction of thiophene in the feed stream with the reactants. The model is developed with respect to the variable (the amount of deposited poison on the active surface, ), which cause the nonstacionary behaviour of the catalytic system. The mass balance for the reactant benzene, , the activity function, , the deactivation function, and the mass balance for the impurity thiophene, , make it possible to determine the distribution of gas and adsorbed phase concentrations. The verification problem of distribution concentration functions of the reactant and impurity in the interior of the catalyst pellet is solved indirectly by the means of the function . The polynomial approximations (the four points orthogonal collocation) are used to solve the differential mass balance equations.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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