Open AccessEFFECT OF THE COMPOSITION OF A MANGANESE-CONTAINING POLYMER CATALYST ON THE KINETICS OF THE OXIDATION REACTION OF N-HEPTANE WITH MOLECULAR OXYGEN
Author(s) -
Aygun Isazade,
Ulviya Mammadova,
Mirsalim Asadov,
Nizami Zeynalov,
D.B. Tagiev,
S.A. Mammadova
Publication year - 2022
Publication title -
azərbaycan kimya jurnalı/azerbajčan himiâ žurnaly
Language(s) - English
Resource type - Journals
eISSN - 2522-1841
pISSN - 0005-2531
DOI - 10.32737/0005-2531-2022-1-41-50
Subject(s) - heptane , catalysis , chemistry , manganese , oxygen , polymer , reaction rate , reaction rate constant , kinetics , inorganic chemistry , polymer chemistry , organic chemistry , physics , quantum mechanics
Catalysts with manganese nanoparticles (5 and 10 wt %) immobilized on poly-4-vinylpyridine were prepared. When interacting with molecular oxygen, the catalyst forms active oxygen, which is involved in the low-temperature oxidation of n-heptane. These catalyst compositions have been used to oxidize n-heptane with pure oxygen to give alcohols, aldehydes and ketones. Oxidation of n-heptane was carried out in the temperature range 303-383 K, molar ratios of heptane:oxygen = 1:3.38, and at atmospheric pressure. It has been found that the non-crosslinked (MnP4VP polymer poly-4-vinylpyridine) and N,N-methylene-bis-acrylamide-crosslinked MnP4VP/MBAA metal-polymer catalyst containing 5 wt % Mn2+ exhibits the highest activity in n-heptane oxidation reactions. The kinetic parameters of the reaction of n-heptane oxidation with oxygen at low temperatures were studied using a kinetic model based on the heptane conversion data. The kinetic model was compiled on the basis of experimental data: heptane:oxygen = 1:3.38 at atmospheric pressure using Mn (wt. 5%) P4VP/MBAA in the temperature range 303-383 K. Within the framework of the chosen kinetic model effective rate constants of the oxidation reaction with the formation of alcohols was calculated