✦ LIBER ✦

The mechanism of thermal dehydrochlorination. Pyrolysis of 1-Chloro-1-fluoroethane and 1-chloro-1, 1-difluoroethane

✍ Scribed by G. J. Martens; M. Godfroid; R. Decelle; J. Verbeyst

Publisher: John Wiley and Sons
Year: 1972
Tongue: English
Weight: 504 KB
Volume: 4
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550040605

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The thermal decompositions of 1‐chloro‐1‐fluoroethane and 1‐chloro‐1,1‐difluorethane at atmospheric pressure have been studied in the temperature range 500–600°C in a flow system. The dehydrochlorinations are homogenous in a carbonaceous reactor and unimolecular. The rate constants are given by

and

The criteria for molecular or chain processes in thermal dehydrochlorinations are discussed.

📜 SIMILAR VOLUMES

Kinetics of UV-laser induced dehydrochlo

Kinetics of UV-laser induced dehydrochlorination of 1-chloro-1,1-difluoroethane

✍ Z. F. Dong; M. Schneider; J. Wolfrum 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 477 KB

The decomposition of 1-chloro-1,l-difluoroethane by a radical chain reaction has been studied in a flow reactor in the temperature range from 503 to 773 K. For the initiation of the chain small amounts of added chlorine were photolyzed with a XeCl laser (A = 308 nm). The formation of the dehydrochlo

Kinetics and mechanism of the pyrolysis

Kinetics and mechanism of the pyrolysis of 1-Chloro-1, 1-difluoroethane in the presence of chlorine

✍ G. Huybrechts; Y. Hubin 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 339 KB

The first stage thermal reactions of CFzCICH, in the presence of chlorine have been studied between 554 and 614 K. These are c12 CFZClCH, -CFZCH, + HCI and CF,ClCH, + CI;! CFZClCH&l + HCI Rate equations derived from a radical mechanism are shown to fit the experimental results. Values of Arrhenius p

Kinetics and mechanism of the pyrolysis

Kinetics and mechanism of the pyrolysis of 1-chloro-1,1-difluoroethane in the presence of additives

✍ G. Huybrechts; G. Van Assche; S. Van Der Auwera 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 162 KB 👁 2 views

The thermal dehydrochlorination has been studied CF ClCH : CF " CH ϩ HCl 2 3 2 2 in a static system between 597 and in the presence of CCl 4 , C 2 Cl 6 , CF 2 "CH 2 , HCl, and 664 K CF 3 CH 3 . A kinetic radical and molecular reaction model has been developed. In addition to describing earlier resul

Pyrolysis of 1-chloro-1,1-difluoroethane

Pyrolysis of 1-chloro-1,1-difluoroethane: Considerations about its molecular nature

✍ G. Huybrechts; G. Van Assche 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 144 KB 👁 2 views

A new insight into the contested origin of the absence of radical reaction in the pyrolysis of CF 2 ClCH 3 is given. This chain reaction would be too slow compared with the molecular reaction because of a too slow homogeneous initiation leading to a too fast wall recombination of the Cl atom chain c

Rotational Spectrum and Internal Rotatio

Rotational Spectrum and Internal Rotation Barrier of 1-Chloro-1,1-difluoroethane

✍ José L. Alonso; Juan C. López; Susana Blanco; Antonio Guarnieri 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 815 KB

The rotational spectra of 1-chloro-1,1-difluoroethane (HCFC-142b) has been investigated in the frequency region 8-115 GHz with Stark, waveguide Fourier transform (FTMW), and millimeter-wave spectrometers. Assignments in large frequency regions with the corresponding frequency measurements have been

Pyrolysis of 1-chloro-1,1-difluoroethane

Pyrolysis of 1-chloro-1,1-difluoroethane in the absence and in the presence of CCl4 and mixtures of CCl4 + HCl

✍ G. Huybrechts; Y. Hubin 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 354 KB

The thermal dehydrochlorination CF,CICH, + CFFCH, + HCl has been studied in a static system between 637 and 758 K. It is a homogeneous, molecular first-order reaction and its rate constant is given by log,, (k, s-') = -(53,400 2 100)/4.576T + (12.21 ? 0.03) This reaction has also been studied in the