51926-97-7Relevant academic research and scientific papers
Evolution of products in the combustion of scrap tires in a horizontal, laboratory scale reactor
Fullana,Font,Conesa,Blasco
, p. 2092 - 2099 (2007/10/03)
A horizontal laboratory reactor was used to study the evolution of byproducts from the combustion of scrap tires at five nominal temperatures (ranging from 650 to 1050 °C) and different oxygen:sample ratios A model was used to calculate the bulk air ratio (λ), and the oxygen consumption was discussed considering this ratio λ. More than 100 volatile and semivolatile compounds were identified and quantified by gas chromatography mass spectrometry, plotting their yields vs the bulk air ratio and temperature. Five different behaviors considering the bulk air ratio and the temperature were identified.
Solvent-promoted E1cB/E2 reactions competing with stepwise solvolysis through homoallylic carbocations
Meng, Qingshui,Thibblin, Alf
, p. 583 - 589 (2007/10/03)
The water-promoted elimination reactions of (R,S)-1-(1-X-ethyl)indene 1-X [X = Cl, Br, I, OBs (4-bromophenylsulfonyloxy)] and the corresponding (R,R) isomers 2-X in 25 vol% acetonitrile in water exhibit non-stereospecific and stereospecific 1,2 elimination, respectively. The reactions are E1cB and E2 type reactions; the conclusion is based upon measured large kinetic deuterium isotope effects and Bronsted β parameters. The rate of the competing solvolytic substitution, which occurs through homoallylic carbocations, increases with the leaving group in the order Br-, I- and BsO-. The spontaneous reactions in methanol are slow; the anti stereochemistry increases with increasing basicity of added base and is favored by negative charge of the base.
