The features of adipic acid esterification with 1-butanol in the presence of aluminosilicates activated with sulfuric acid as a catalyst have been studied. The optimal process conditions have been determined. The influence of a heterogeneous catalyst nature on the esterification proceeding has been defined. Досліджено закономірності естерифікації адипінової кислоти 1-бутанолом у при- сутності активованих сульфатною кислотою алюмосилікатів як каталізаторів. Визначено оптимальні умови процесу. Встановлено вплив природи гетерогенного каталізатора на перебіг естерифікації.
Cooligomerization of unsaturated hydrocarbons of C9 fraction of diesel fuel pyrolysis liquid products and terpenic hydrocarbons of turpentine has been studied using catalysts of different nature. Physical-chemical properties of the aromatic-terpenic resins obtained with these catalysts have been compared.
The influence of immobilized and homogeneous Rh-contained complex, [Rh(CO)2Cl]2, on the oxidation reaction of 1-octene by molecular oxygen on the initial stages of process was investigated. It was established that the immobilized as well as homogeneous rhodium complex activate the oxidation reaction in the presence of radical processes initiator – hydroperoxide tert-butyl. It was shown that the usage of the immobilized catalyst allows to reach higher process parameters at lower amount of the applied rhodium complex.
Проведено спектрографічні дослідження бінарних каталітичних систем для
процесу окиснення циклогексану на основі нафтенату кобальту з використанням
органічних модифікаторів різної природи – етанолу та гліцину у циклогексаноні.
Проведені дослідження підтверджують припущення про комплексоутворення за участю
всіх компонентів каталітичних розчинів. Побудовано структурні формули ймовірних
комплексів каталітичних систем. The spectral analysis of binary catalytic solutions based on cobalt naphthenate for the
The effect of BaCl2 promotor on the catalytic properties of Fe-Te-Mo-Ox catalyst of joint oxidative dehydration and oxidative amonolysis of C4 olefins has been examined. The optimal composition of promoted catalyst has been established taking into consideration methacrylonitrile and butadiene yields. The process kinetics has been investigated
Metacrylonitrile obtained by oxidative amonolysis over different oxidative catalysts has been investigated. Instead of isobutylene an alternative raw material has been investigated for the metacrylonitrile synthesis.
Oxidation of tert-butyl alcohol (TBA) to methacrolein (МA) over Fe-Te-Mo-Ox catalyst (Cat), promoted by Ca(NO3)2 has been investigated. Promoter concentration, which was optimal by the МA yield, has been established (Ca/Mo = 0.05). Using catalyst of such type the MA yield was 87.1 % (calculated for supplied TBA) at the temperature of 663 K, process time of 2.5 s and TBA concentration of 7.0 % with concentration of water vapour in the air of 20 %. Under mentioned conditions TBA conversion was 100 %, isobutylene conversion – 95.5 %, selectivity by MA was 87.6 % and by CO2 – 2.4 %.
The complex formation of molybdenum and vanadium borides in the reaction system of 1-octene epoxidation with tert-butyl hydroperoxide by infrared spectroscopic analysis was studied. It was shown that 1-octene formed complex with metal moiety in a case of molybdenum boride and with boron moiety in a case of vanadium boride.
Methyl methacrylates synthesis via oxidative conversion of isobutyl alcohol has been investigated in accordance with different schemes. The possibility of its use as an alternative raw material instead of isobutylene and tert-butyl alcohol has been established. Using the scheme isobutyl alcohol methacrylonitrile methyl methacrylate the product with ultimate yield of 64.8 % has been obtained. Taking into consideration the recirculation of unreacted methacrolein the yield is 81.9 %. This scheme may be recommended for industrial application.
New epoxy resins with fluorine atoms have been synthesized via chemical modification of dianic epoxy resin with fluorine-containing alhocols-telomers C7, C9 and C13, using benzyltriethylammonium chloride and KOH as a catalyst system. Their characteristics have been examined. The structure of synthesized products has been confirmed by IR-spectroscopy. It has been shown that new epoxy resins may be used as active plasticizers for industrial epoxy resin.