A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1836-62-0, Name is 2-(2-Methoxyphenoxy)ethylamine, molecular formula is C9H13NO2. In an article, author is Zhang, Zhen,once mentioned of 1836-62-0, COA of Formula: C9H13NO2.
Understanding H2O2-Induced Thermo-Oxidative Reclamation of Vulcanized Styrene Butadiene Rubber at Low Temperatures
Recombination reactions often occur in the process of chemical, thermal, or mechanical degradation of vulcanized styrene butadiene rubber (SBR), which hinders the recycling efficiency of waste tire rubbers. In this work, we developed an effective method to transform solid vulcanized SBR into reclaimed rubber with 100% sol fraction through a hydrogen peroxide (H2O2)-induced thermo-oxidative reclamation process at 100 degrees C with the assistance of soybean oil. The structural evolution of the vulcanized SBR and the role of H2O2 and soybean oil in the reclaiming process were investigated by sol-gel analysis, gel permeation chromatography (GPC), attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), and C-13 nuclear magnetic resonance (C-13 NMR) spectroscopy. The results showed that vulcanized SBR underwent severe oxidative scission, the sol of the reclaimed samples increased from 20.4 wt % up to 100 wt % with a decreased molecular weight to 1.378 x 10(4) g/mol. Multiple functional groups such as carboxyl, hydroxyl, and ether groups were generated in the polymer chains as confirmed by C-13 NMR and FTIR spectroscopy. Moreover, the reaction pathway of the oxidative reclamation was quantified by density functional theory (DFT) calculations, suggesting that hydroxyl radicals were generated from a homolytic cleavage reaction of H2O2 with SBR by hydrogen abstraction and accelerated the rate-determining step of the SBR oxidation. The apparent activation energy (E-a) of the initial stage of the oxidative reclamation decreased from 223 to 160 kJ/mol according to the model-free kinetics results.
Interested yet? Keep reading other articles of 1836-62-0, you can contact me at any time and look forward to more communication. COA of Formula: C9H13NO2.