Search Results

You are looking at 81 - 90 of 1,755 items for :

  • "intermediate" x
  • All content x
Clear All

-obtained intermediates were dissolved in chloroform. The solvent was then evaporated under reduced pressure that resulted in the formation of yellowish-brown intermediate, which was further purified by TLC using precoated silica gel 60 F254 plates and flash column

Restricted access

estimation of product yields at intermediate stages of conversion. A promising approach to specify thermodynamic solutions is the models of extreme intermediate states suggested at MESI. They develop the methodology of classical equilibrium

Restricted access

hazardous contaminants from the environment, we can use these safe processes to remove pharmaceuticals and pharmaceutical pollution. Chemical oxidation aims to selectively remove persistent components via the conversion to readily biodegradable intermediates

Open access
Journal of Thermal Analysis and Calorimetry
Authors: Dumitru Oancea, Valentin Munteanu, Domnina Razus, and Maria Mitu

gradient between the solid catalyst and the surrounding gas, the existence of a self-acceleration process cannot be attributed to the reaction exothermicity; only the multiplication (branching) of the active intermediates on the catalyst surface can account

Restricted access

intermediates on the surface ( Fig. 1a ). This mechanism prevailed until Brady and Pettit [ 21 , 22 ] demonstrated the importance of adsorbed CH 2 species on the catalyst's surface. Brady and Pettit's work was refined by experimental investigation by Quyoum

Restricted access
Journal of Thermal Analysis and Calorimetry
Authors: Annamária Krajníková, Katarína Győryová, Jana Kovářová, Daniela Hudecová, Jana Hubáčková, Faten Nour El-Dien, and Marián Koman

Complexone III as an agent and Eriochrome black T as an indicator. The IR spectra of the prepared zinc complex compounds and the solid intermediates of thermal decomposition were recorded on an AVATAR 330 FT-IR Thermo Nicolet spectrometer using KBr

Restricted access

temperature to 130 °C and 135–260 °C) associated with endothermic effects correspond to evolution of residual water molecules. Further decomposition steps that are associated with small but narrow endothermic peaks correspond to intermediate formation of aqua

Restricted access

on the thermal decomposition of transition metal amine complexes, not many studies has been reported to date with regard to the evolved gas analysis (EGA) during thermal decomposition and also in detecting the transient intermediates formed during

Restricted access

. – Noguera , G. ( 2012a ): Accounting for Intermediates: Production Sharing and Trade in Value-Added . Journal of International Economics , 86 ( 2 ): 224 – 236 . Johnson , R. C

Open access

thermogravimetry and differential thermal analysis (TG-DTA, Setaram TGDTA 92) in the temperature range 30–800 °C at a heating rate of 10 °C min −1 , under an ambient atmosphere. The intermediate and final compounds of thermal decomposition of the

Restricted access