266. Catalysis by hydrogen halides in the gas phase. Part V. t-Pentyl alcohol and hydrogen chloride

1961 ◽  
pp. 1392 ◽  
Author(s):  
V. R. Stimson ◽  
E. J. Watson
Keyword(s):  
Gas Phase ◽  
Hydrogen Chloride ◽  
Hydrogen Halides

Catalysis by hydrogen halides in the gas phase. XIV. Methyl trimethylacetate and hydrogen bromide and the effects of added alcohols

1968 ◽  
Vol 21 (3) ◽  
pp. 687 ◽  
Author(s):  
JTD Cross ◽  
VR Stimson
Keyword(s):  
Carbon Monoxide ◽  
Methyl Ester ◽  
Gas Phase ◽  
Hydrogen Chloride ◽  
Hydrogen Bromide ◽  
Hydrogen Halides ◽  
Kinetic Form

Hydrogen bromide and hydrogen chloride catalyse the decomposition of methyl trimethylacetate into isobutene, carbon monoxide, and methanol at 370-442� and 450-48O�, respectively. The kinetic form, which is basically 1 : 1, is severely modified by the effect of methanol either produced in the reaction or added initially. Water or alcohols react with an intermediate in the catalysed decomposition of trimethylacetic acid or its methyl ester in esterification-like reactions; some of the resultant esters subsequently decompose to olefin and acid.

Catalysis by hydrogen halides in the gas phase. XI. Tertiary butyl ethyl ether and hydrogen chloride

1966 ◽  
Vol 19 (3) ◽  
pp. 401 ◽  
Author(s):  
VR Stimson ◽  
EJ Watson
Keyword(s):  
Gas Phase ◽  
Hydrogen Chloride ◽  
Ethyl Ether ◽  
Arrhenius Equation ◽  
Hydrogen Halide ◽  
Hydrogen Halides ◽  
Tertiary Butyl ◽  
First Order ◽  
Mechanism Of The Reaction ◽  
Kinetic Form

Hydrogen chloride catalyses the decomposition of t-butyl ethyl ether at 320-428�. Isobutene is quantitatively the product and the kinetic form is first order in the ether and in hydrogen chloride. The Arrhenius equation:��������� k, = 1012'16exp( -30,60O/RT) (sec-l ml mole-=) is followed. The mechanism of the reaction seems similar to those of other hydrogen halide catalysed decompositions of ethers and alcohols.

Catalysis by hydrogen halides in the gas phase. XIII. Isopropanol and hydrogen iodide

1967 ◽  
Vol 20 (6) ◽  
pp. 1143 ◽  
Author(s):  
RL Failes ◽  
VR Stimson
Keyword(s):  
Gas Phase ◽  
Hydrogen Chloride ◽  
Rate Constants ◽  
Arrhenius Equation ◽  
Hydrogen Bromide ◽  
Hydrogen Iodide ◽  
Initial Reaction ◽  
Hydrogen Halides ◽  
The Individual

Hydrogen iodide catalyses the decomposition of isopropanol into propene and water at 356 to 457�, viz. �������������������������� i-C3H7OH+HI → C3H6+H2O+HI This is followed by the faster reactions �������������������������� C3H6+HI → i-C3H7I ����� ��������������������i-C3H7I+HI → C3H8+I2������������������������ i-C3H7OH+I2 → (CH3)2CO+2HI The rates of the initial reaction fit the Arrhenius equation ����������������� k2 = 1012.24 exp(-31900/RT) sec-1 ml mole-1 and it is believed to be homogeneous and molecular. It is faster than the corresponding reactions with hydrogen chloride and hydrogen bromide in the ratios 100 : 1 and 5 : 1, respectively. For the overall reaction the amounts of the products formed to 70% reaction, computed with the use of rate constants of the individual reactions, agree well with the amounts found by analysis.

Catalysis by hydrogen halides in the gas phase. X. Tertiary butyl methyl ether and hydrogen chloride

1966 ◽  
Vol 19 (3) ◽  
pp. 393 ◽  
Author(s):  
VR Stimson ◽  
EJ Watson
Keyword(s):  
Gas Phase ◽  
Surface Area ◽  
Hydrogen Chloride ◽  
Methyl Ether ◽  
Rate Equation ◽  
Hydrogen Halides ◽  
Tertiary Butyl ◽  
First Order ◽  
Tertiary Butyl Methyl Ether ◽  
Butyl Methyl Ether

The decomposition of t-butyl methyl ether catalysed by hydrogen chloride takes place at 337-428�. It is first order in each reactant and the rate is not affected by increase in surface area or inhibitor. The rate equation is: K2 = 1012.46exp(-32100/RT) (sec-l ml mole-l) The reaction is believed to be molecular and its properties are in accord with those of other such catalysed decompositions.

Catalysis by hydrogen halides in the gas phase. XXIV. 2,2-Dimethoxypropane and hydrogen chloride

1972 ◽  
Vol 25 (4) ◽  
pp. 793 ◽  
Author(s):  
VR Stimson ◽  
JW Tilley
Keyword(s):  
Gas Phase ◽  
Hydrogen Chloride ◽  
Radical Chain ◽  
Hydrogen Halides ◽  
First Order

The decomposition of 2,2-dimethoxypropane to methyl isopropenyl ether and methanol in the gas phase is catalysed by hydrogen chloride in c. 1% proportion at 226-364�C. The reaction is first order in each reactant and rates are given by the equation kz = 2.3 x 1013 exp(-22200/RT) (s-1 ml mol-1) The possibility of the reaction being a radical chain or surface one is discussed. However, it is believed to be homogeneous and molecular.

The steric course of the reaction of ethylene oxide with hydrogen halides in the gas phase

1981 ◽  
pp. 1336 ◽  
Author(s):  
Giuseppe Bellucci ◽  
Giancarlo Berti ◽  
Roberto Bianchini ◽  
Giovanni Ingrosso ◽  
Antonio Moroni
Keyword(s):  
Ethylene Oxide ◽  
Gas Phase ◽  
Hydrogen Halides
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