ChemInform Abstract: THE THERMAL DECOMPOSITION OF METHYLTITANIUM TRICHLORIDE IN ETHYL ETHER

1978 ◽  
Vol 9 (43) ◽  
Author(s):  
D. DONG ◽  
S. C. V. STEVENS ◽  
J. D. MCCOWAN ◽  
M. C. BAIRD
Keyword(s):  
Thermal Decomposition ◽  
Ethyl Ether

THE KINETICS OF THE THERMAL DECOMPOSITION OF VINYL ISOPROPYL ETHER

1953 ◽  
Vol 31 (4) ◽  
pp. 418-421 ◽  
Author(s):  
Arthur T. Blades
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Free Radical ◽  
Ethyl Ether ◽  
Close Agreement ◽  
Flow System ◽  
Isopropyl Ether ◽  
Radical Decomposition ◽  
A Minor ◽  
Kinetics Of

The thermal decomposition of vinyl isopropyl ether in the presence of toluene has been studied in a flow system in the temperature range 447–521 °C. In this range, the data indicate a purely intramolecular decomposition into propylene and acetaldehyde, the activation energy for the reaction being in close agreement with that found for the decomposition of vinyl ethyl ether. At 570 °C. a minor free radical decomposition of the ether becomes apparent. Some qualitative studies of the decomposition of vinyl isobutyl ether are also reported.

The thermal decomposition of CH3TiCl3 in ethyl ether

1978 ◽  
Vol 29 ◽  
pp. L225-L227 ◽  
Author(s):  
D. Dong ◽  
S.C. Stevens ◽  
J.D. McCowan ◽  
M.C. Baird
Keyword(s):  
Thermal Decomposition ◽  
Ethyl Ether

scholarly journals The thermal decomposition of ethyl ether on the surface of Platinum

1930 ◽  
Vol 128 (808) ◽  
pp. 451-458 ◽  
Keyword(s):  
Thermal Decomposition ◽  
Nitrous Oxide ◽  
Diethyl Ether ◽  
Ethyl Ether ◽  
Hydrogen Iodide ◽  
Unimolecular Reaction ◽  
Homogeneous Reaction ◽  
Bimolecular Reactions ◽  
Gas Reactions ◽  
Decomposition Of Nitrous Oxide

It is of considerable interest to compare the velocities of homogeneous and heterogeneous gas reactions. In general homogeneous bimolecular reactions tend to become unimolecular in the presence of a catalyst, and the heat of activation falls to about one-half. This has been shown to be the case in the decomposition of nitrous oxide, hydrogen iodide, and ammonia. The question arises as to what is the effect of a catalyst on a homogeneous unimolecular reaction. The decomposition of gaseous diethyl ether was chosen for investigation on account of its simplicity; and an attempt has been made to compare the heterogeneous decomposition on the surface of platinum with that of the homogeneous reaction which has been investigated by Hinshelwood.

The thermal decomposition of 1-ethoxyethyl chloride and the reverse combination

1967 ◽  
Vol 20 (8) ◽  
pp. 1553 ◽  
Author(s):  
RL Failes ◽  
VR Stimson
Keyword(s):  
Thermal Decomposition ◽  
Transition State ◽  
Hydrogen Chloride ◽  
Ethyl Ether ◽  
Reverse Reaction ◽  
Kcal Mole ◽  
First Order ◽  
Polar Transition

1-Ethoxyethyl chloride decomposes cleanly at 164-221� into vinyl ethyl ether and hydrogen chloride in a first-order manner with k1 = 1010.52exp(-30300/RT) sec-1 (1) The equilibrium of the system at 128-221� approached from either direction at various pressures is well represented by (Kp in atmospheres) 1.987 In Kp = 31.1 � 0.9-(16500�500)/T (2) and this leads to ΔH�f,298(g) = -71.9 kcal mole-1 for 1-ethoxyethyl chloride. Combination of (1) and (2) gives k2 = 108.7exp(-14700/RT) sec-1 ml mole-1 for the reverse reaction and rate measurements verify this. The reactions are molecular, and relative rates indicate a polar transition state.

The thermal decomposition of t-butyl ethyl ether

1968 ◽  
Vol 21 (6) ◽  
pp. 1535 ◽  
Author(s):  
NJ Daly ◽  
C Wentrup
Keyword(s):  
Thermal Decomposition ◽  
Ethyl Ether ◽  
Arrhenius Equation ◽  
Reaction Products ◽  
First Order ◽  
Kinetic Form

The rates of decomposition of t-butyl ethyl ether have been measured in the range 433-484�. The reaction products are ethanol and isobutene, and the kinetic form is first order. The Arrhenius equation k1 = 1017.18exp(-59740/RT)sec-1 is followed. The reaction behaviour is consistent with a unimolecular mechanism for the decomposition.

scholarly journals THE THERMAL DECOMPOSITION OF VINYL ETHYL ETHER

1943 ◽  
Vol 21b (5) ◽  
pp. 97-110 ◽  
Author(s):  
Sheng-Nien Wang ◽  
C. A. Winkler
Keyword(s):  
Thermal Decomposition ◽  
Free Radicals ◽  
Ethyl Ether ◽  
Pressure Change ◽  
Order Reaction ◽  
First Order Reaction ◽  
First Order ◽  
Temperature Range ◽  
Unsaturated Ether ◽  
Rearrangement Mechanism

Over the temperature range 377° to 448 °C, vinyl ethyl ether has been found to decompose by a first order reaction to give ethylene and acetaldehyde, at a rate given by[Formula: see text]The reaction is capable of sensitizing the decomposition of acetaldehyde and the polymerization of ethylene; this indicates that free radicals are produced during the decomposition of the ether.Nitric oxide exerts virtually no effect upon the rate of ether decomposition, although it does reduce the rates of pressure change of ether-acetaldehyde mixtures to those corresponding to ether decomposition alone.It is suggested that the decomposition of vinyl ethyl ether occurs essentially through a rearrangement mechanism, and that free radicals do not play an important part, owing possibly to the inhibiting character of this unsaturated ether.

Applications of Photoelectron Microscopy

1976 ◽  
Vol 34 ◽  
pp. 506-507
Author(s):  
William J. Baxter
Keyword(s):  
Electron Microscopy ◽  
Thermal Decomposition ◽  
Chemical Composition ◽  
Ultraviolet Radiation ◽  
Thin Layer ◽  
Edge Effects ◽  
Electron Optics ◽  
Surface Layers ◽  
Crystalline Orientation ◽  
Fluorescent Screen

In this form of electron microscopy, photoelectrons emitted from a metal by ultraviolet radiation are accelerated and imaged onto a fluorescent screen by conventional electron optics. image contrast is determined by spatial variations in the intensity of the photoemission. The dominant source of contrast is due to changes in the photoelectric work function, between surfaces of different crystalline orientation, or different chemical composition. Topographical variations produce a relatively weak contrast due to shadowing and edge effects.Since the photoelectrons originate from the surface layers (e.g. ∼5-10 nm for metals), photoelectron microscopy is surface sensitive. Thus to see the microstructure of a metal the thin layer (∼3 nm) of surface oxide must be removed, either by ion bombardment or by thermal decomposition in the vacuum of the microscope.

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