- Arrhenius parameters for the reaction HO2 + cyclohexane between 673 and 773 K, and for H atom transfer in cyclohexylperoxy radicals
-
The addition of cyclohexane (CHX) to O2 + tetramethylbutane (TMB) mixtures at 673-773 K in aged boric-acid-coated Pyrex vessels was studied to obtain kinetic data for the reaction of HO2 radicals with CHX. The contribution by OH radi
- Walker,Handford-Styring
-
p. 2043 - 2052
(2007/10/03)
-
- Cyclodehydration of some 1,n-diols catalysed by sulfated zirconia
-
Sulfated zirconia, a solid acid is found to be a good catalyst in the cyclodehydration of several diols.
- Wali, Anil,Pillai, S. Muthukumaru
-
p. 326 - 327
(2007/10/03)
-
- Perfluorinates polyethers
-
This invention pertains to perfluoropolyethers and perhalogenated chlorofluoropolyethers that can be prepared by fluorinating addition polymers made by polymerizing epoxides.
- -
-
-
- Perfluorinated polyethers
-
This invention pertains to perfluoropolyethers and perhalogenated chlorofluoropolyethers that can be prepared by fluorinating addition polymers made by polymerizing epoxides.
- -
-
-
- Etude de l'oxidation homogene du cyclohexane en phase gazeuse. I. Etude experimentale
-
The gas-phase oxidation of cyclohexane around 350 deg C and at subatmospheric pressure in a static reaction vessel was investigated first to determine the limits of the slow reaction and cool flame regions in a pressure-temperature plane.The reaction products were identified and measured; these results are used as an experimental basis to build a sufficiently detailed reaction mechanism which will be used later on for reaction modelling.Our results are compared in a rather detailed way to those of other authors.
- Klai, S. E.,Baronnet, F.
-
p. 1929 - 1950
(2007/10/02)
-
- Etude de l'oxidation homogene du cyclohexane en phase gazeuse. II. Mecanisme reactionnel et modelisation
-
After a detailed experimental investigation of the homogeneous gas phase oxidation of cyclohexane described in a first paper (part one), a detailed reaction mechanism based on the experimental results and accounting for the observed reaction products was built.To reduce this reaction scheme, the rate constants of the elementary steps were estimated and by comparison of the product distribution with the predictions derived from the model, a simplified reaction mechanism (approximately 30 elementary reaction steps) was put forward.A comparison between the results derived from the model and the experimental results showed some substantial discrepancies which led to identify, by sensitivity analysis, the determining elementary steps, to fit the kinetic parameters and to complete, in a rather limited way, the first mechanism that was proposed.The final mechanism and the fitted kinetic parameters led to a satisfactory agreement between computed and experimental results, often better than that obtained by other authors in the case of alkane oxidation.The prospects and limits of this approach are mentioned, especially the use of lumping techniques aiming at a further simplification of the reaction mechanism.
- Klai, S. E.,Baronnet, F.
-
p. 1951 - 1998
(2007/10/02)
-
- ORGANOTINS AS ETHERIFICATION CATALYSTS. III. ETHERIFICATIONS AND HYDRO-HYDROXY-ELIMINATIONS PROMOTED BY BUTYLTIN TRICHLORIDE
-
Butyltin trichloride, as a catalyst precursor, promotes the following processes: (i) etherification of 2,3-unsaturated alcohols, (ii) etherification of functional diols, (iii) cyclization of 2,5-hexanedione, and (iv) dehydration of cyclic diols.Many examples are reported.
- Marton, Daniele,Slaviero, Pierangelo,Tagliavini, Giuseppe
-
p. 7099 - 7108
(2007/10/02)
-
- 7-Oxabicyclohept-2-ene and Related Materials by Reductive Elimination
-
The cycloadduct 1 of furan and (E)-1,2-bis(phenylsulfonyl)ethylene has been converted to various derivatives which in turn have been subjected to sodium amalgam reductive elimination conditions.Some of these procedures constitute useful methods for the preparation of the title olefin.The amalgam reduction of 1 provides modest yields of 7-oxabicyclohepta-2,5-diene.The cycloadduct of isobenzofuran and the reactive dienophile was prepared and subjected to analogous reactions.Various reaction steps which compete with reductive elimination have been identified.
- Mirsadeghi, Seid,Rickborn, Bruce
-
p. 4340 - 4345
(2007/10/02)
-