hydroperoxide

Melamine formaldehyde oligomers with peroxy groups (MFOP) have been synthesized based on melamine or urea and melamine in the presence of tert-butyl peroxymethanol or tert-butyl hydroperoxide. Zinc oxide was used as a catalyst. The effect of peroxide nature, ratio of the starting components and process time on the characteristics and yield of MFOP has been studied. The structure of the synthesized MFOP was confirmed by IR- and PMR-spectroscopy. The chemistry of the cross-linked structures formation was studied.

The possibility of synthesis in the presence of tert-butyl peroxymethanol (TBPM) or tert-butyl hydroperoxide (TBHP) of urea-formaldehyde oligomers with peroxide groups (UFOP) has been considered. Zinc oxide was used as the reaction catalyst. The effect of the initial components ratio, the reaction temperature and the process time on the characteristics and yield of the obtained oligomers was studied. Methods for obtaining UFOP using a mixture of TBPM and TBHP as a component are proposed. The structure of the synthesized UFOP was confirmed by IR- and NMR-spectroscopic studies.

Tert-butyl hydroperoxide decomposition in the presence of initiators (tert-butyl peroxide (tBuOOtBu), azodiisobutyronitrile(AIBN)) and catalysts (Mo2B5, MoB, Mo2B, MoSi2, VB2, VSi2) was studied. Our experiments suggest that the introduction of radicals may reduce the catalytic activity. The mechanism of the initial stage of tert-butyl hydroperoxide decomposition and reaction rate equation are proposed.

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. 

The initial stages of liquid-phase oxidation of cyclooctene by molecular oxygen in the presence of tert-butyl hydroperoxide were investigated. It was shown that radical formation is the result of bimolecular decomposition of hydroperoxide. The influence of azodiizobutyronitrile on this process was studied. The kinetic parameters of the process were calculated.

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.

The influence of immobilized catalytic compositions, obtained by immobilization of cyanide complexes of transition metals: Ni, Pd, Pt, Со, Fe, Ru, and oxysalts of vanadium on the aluminum oxide as a carrier, on the initial stages of the liquid-phase oxidation reaction of 1-octene by the molecular oxygen was studied.