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Trach, Yu. B.; Komarenskaya, Z. M.; Никипанчук, М. В.; Pyrig, I. Yu.; Romanyuk, G. V.

doi:10.1023/a:1010445207391

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…Based on the obtained results as well as data of literature [3,16] and data of our previous works [17,18] the process of cyclooctene (RH) oxidation by molecular oxygen in the presence of VSi 2 and TBHP on the initial stages of the reaction can be described by the scheme that contains radical formation, chain propagation and chain termination reactions: 1) radical formation reactions: .…”

Section: Resultsmentioning

confidence: 73%

The study of cyclooctene oxidation with molecular oxygen catalyzed by VSi2

et al. 2009

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Abstract:The catalytic effect of VSi 2 on initial stages of the liquid-phase oxidation of cyclooctene by molecular oxygen was studied. The vanadium disilicide influences on the oxidation process in the presence of hydroperoxide. VSi 2 takes part in a radical formation stage by catalysis of hydroperoxide decomposition reaction. The catalyst was investigated before and after reaction using FTIR spectroscopy. From the data obtained, the kinetic model of the catalytic oxidation process was proposed and the equation for the reaction rate was derived. The equation has described all observed dependences of reaction rate on the concentration of reactants and content of catalyst.

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Section: Resultsmentioning

confidence: 73%

The study of cyclooctene oxidation with molecular oxygen catalyzed by VSi2

et al. 2009

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“…Methods for obtaining and purifying other chemicals, conducting the experiments, analyzing the reaction mixture, and processing the kinetic curves are described in more detail elsewhere. 32,37,46…”

Section: Methodsmentioning

confidence: 99%

“…[32][33][34][35] In particular, molybdenum boride catalysts are quite effective in the epoxidation reactions of olefins with tert-butyl hydroperoxide. [36][37][38][39][40][41] By using these catalysts, the rate of hydroperoxide consumption flow rate increases over time. 32,33,38,39,42 While in the case of Mo 2 B 5 catalyst such an increase in the reaction rate is associated with partial dissolution of the catalyst and formation of an active homogeneous form of the catalyst in the reaction mixture, 42 in the case of Mo 2 B, MoB, and MoB 2 catalysts it results from the catalyst surface activation.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of BaCl2 on Corrosion Inhibition of Copper by Mentha Spicata Oil in 1M Nitric Acid: Gravimetric and Raman Spectroscopy Studies

Belarbi¹,

Dergal²,

Chikhi³

et al. 2023

ChChT

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The effect of Mentha Spicata oil and the mixture of BaCl2 and Mentha Spicata oil on corrosion of copper in 1M HNO3 have been investigated using weight loss methods and Raman spectroscopy. The study revealed that copper is more efficiently inhibited by Mentha Spicata oil in the presence of BaCl2 than pure oil. The inhibition efficiencies increased with increased concentration of the additives. The highest inhibition efficiency of 56.12 % was observed with single Mentha Spicata oil. An improved inhibition efficiency of 75.13 % was observed with the mixture of Mentha Spicata oil and BaCl2 at 298 K in 1M HNO3, an effect attributed to synergism between Mentha Spicata oil and BaCl2. Inhibition efficiency decreased with increase in temperature from 298-328 K. The adsorption of inhibitor molecules on metal surface followed Frumkin and Langmuir isotherm. Thermodynamic parameters such as enthalpy ∆H, free energy of adsorption ∆G and entropy of adsorption are obtained from experimental temperatures ranging from 298-328 K. Raman Spectroscopy and mapping were used to characterize the surface layers.

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“…Hence, in the present work, we report the synthesis of a novel hydroperoxy sultam with a nitrogen atom in the aromatic ring, 2-(6-bromo-pyrid-2-yl)-2,3,4,5,6,7-hexahydro-1,2benzisothiazol-3-hydroperoxy 1,1-dioxide (HPS), its solidstate structure and kinetics of interaction with cyclooctene in the presence of molybdenum boride MoB-one of the molybdenum borides which are effective catalysts for the hydroperoxide epoxidation of unsaturated compounds. [14][15][16][17][18][19] 2. Experimental…”

Section: Introductionmentioning

confidence: 99%

Novel hydroperoxy sultam, 2-(6-bromo-pyrid-2-yl)-2,3,4,5,6,7-hexahydro-1,2-benzisothiazol-3-hydroperoxy 1,1-dioxide: synthesis, crystal structure and kinetics of catalytic interaction with cyclooctene

et al. 2008

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The novel hydroperoxy sultam, 2-(6-bromo-pyrid-2-yl)-2,3,4,5,6,7-hexahydro-1,2-benzisothiazol-3hydroperoxy 1,1-dioxide (HPS), was synthesized by the oxidation of the isothiazolium salt with hydrogen peroxide. As established by X-ray crystallography the unit cell of HPS in crystal state includes four molecules with a dimeric structure as a result of strong intermolecular hydrogen bond formation. The hydroperoxy sultam interacts with cyclooctene in the presence of molybdenum boride MoB as epoxidation catalyst at 40 1C. The additional consumption of HPS upon catalyst activation leads to an increase in the 1,2-epoxycyclooctane formation selectivity with increasing of HPS concentration. On the basis of the obtained results a kinetic reaction scheme was proposed. The equation for the reaction rate as well as the equation that connects the current concentration of hydroperoxide with reaction time and allows the calculation of the theoretical kinetic curves for HPS consumption were derived according to the kinetic scheme.

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Untitled

Cited by 6 publications

References 4 publications

The study of cyclooctene oxidation with molecular oxygen catalyzed by VSi2

The study of cyclooctene oxidation with molecular oxygen catalyzed by VSi2

Synergistic Effect of BaCl2 on Corrosion Inhibition of Copper by Mentha Spicata Oil in 1M Nitric Acid: Gravimetric and Raman Spectroscopy Studies

Novel hydroperoxy sultam, 2-(6-bromo-pyrid-2-yl)-2,3,4,5,6,7-hexahydro-1,2-benzisothiazol-3-hydroperoxy 1,1-dioxide: synthesis, crystal structure and kinetics of catalytic interaction with cyclooctene

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