The effect of dispersed oxides V2O5, TiO2, ZrO2 on rheology characteristic of V-Ti-Zr-catalysts and their catalytic properties in the oxidation of - β picoline
Abstract
Influence of dispersion of oxides V2O5, TiO2, ZrO2 on durability of V-Ti-Zr of catalysts is studied. It is shown that the disperse structure of initial components of V-Ti-Zr-oxide catalysts defines dispersion of the ready catalyst that influences its catalytic properties. It is possible to increase dispersion of the catalyst by replacement of oxides of vanadium and titan by metavanadate ammonium and metatitanic acid. The optimum quantitative ratio of initial components of the catalyst is defined. The mass ratio of initial compounds for the catalyst synthesis equal to 1:4:8 for NH4V03:H2Ti03:Zr02 (in terms of oxides V, Ti and Zr), provides receiving enough strong granules. It is shown that this structure of the catalyst possesses the greatest selectivity in oxidation 3-methylpyridin to nicotinic acid (83%).
References
2 Sembaev DKh, Ivanovskaya FA (2007) Kazakhstan Chemical Journal [Himicheskiy zhurnal Kazahstana] 16:191-196.
3 Boreskov GK (1988) Heterogeneous catalysis [Geterogennyj kataliz]. Nauka, Moscow, USSR.
4 Fadeeva VS (1961) Mold ability of plastic disperse masses [Formuemost' plastichnyh dispersnyh mass]. Gosstroyizdat, Moscow, USSR.
5 Kruglitskii NN (1968) Physico-chemical properties of the regulatory framework dispersions of clay minerals [Fiziko-himicheskie osnovy regulirovanija svojstv dispersij glinistyh mineralov]. Naukova dumka, Kiev, Ukrainian SSR.
6 Sembaev DKh, Saurambaeva LI, Kim SM (1978) J Anal Chem-USSR+ [Zhurnal analiticheskoi himii] 33:391-392.
7 Gul VE, Kuleznev VN (1966) Structure and mechanical properties of polymers [Struktura i mehanicheskie svojstva polimerov]. HighSchool, Moscow, USSR.
8 Belehkii EF, Riskin IV (1960) Chemistry and Technology of pigments [Himija i tehnologija pigmentov]. Goskhimizdat, Leningrad, USSR.
9 Plyasova LM, Zenkobets GA, Olenkova IP, Tarasova DV (1980) News of the Siberian branch of the Academy of Sciences of USSR. Chemical Series [Izvestiya Sibirskogo otdeleniya Akademii nauk SSSR. Seriya himicheskaya] 9:97-105.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY-NC-ND 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.