Kinetics of dehydration of aqueous 2,3-butanediol to methyl ethyl ketone

1982 ◽  
Vol 21 (3) ◽  
pp. 473-477 ◽  
Author(s):  
Richard R. Emerson ◽  
Michael C. Flickinger ◽  
George T. Tsao
Keyword(s):  
Methyl Ethyl Ketone ◽  
Methyl Ethyl ◽  
Kinetics Of

Kinetics of wax crystallization from methyl ethyl ketone solutions

1977 ◽  
Vol 13 (10) ◽  
pp. 712-714 ◽  
Author(s):  
E. T. Klimenko ◽  
M. N. Seliverstov ◽  
M. I. Fal'kovich
Keyword(s):  
Methyl Ethyl Ketone ◽  
Methyl Ethyl ◽  
Wax Crystallization ◽  
Kinetics Of

Kinetics of Reductive Alkylation ofp-Phenylenediamine with Methyl Ethyl Ketone Using 3% Pt/Al2O3Catalyst in a Slurry Reactor

2007 ◽  
Vol 46 (10) ◽  
pp. 3243-3254 ◽  
Author(s):  
Narendra G. Patil ◽  
Debdut Roy ◽  
Amit S. Chaudhari ◽  
Raghunath V. Chaudhari
Keyword(s):  
Methyl Ethyl Ketone ◽  
Slurry Reactor ◽  
Methyl Ethyl ◽  
Reductive Alkylation ◽  
Kinetics Of

The kinetics of the oxidation of gaseous methyl ethyl ketone. I

1951 ◽  
Vol 207 (1091) ◽  
pp. 461-470 ◽  
Keyword(s):  
Induction Period ◽  
Methyl Ethyl Ketone ◽  
Reaction Rate ◽  
Methyl Ethyl ◽  
Form Analysis ◽  
Rate Of Reaction ◽  
Kinetics Of

In the oxidation of gaseous butanone the reaction rate increases with time from an initially small value to a maximum. The growth of rate in the early part of the reaction is exponential in form. Analysis for ketone shows that the consumption of butanone runs closely parallel to the increase of pressure. During the induction period peroxides accumulate and the rate of reaction is proportional to peroxide concentration. The formation of peroxides is greatly accelerated by the addition of a trace of acetaldehyde.

scholarly journals Effects of ethanol on the kinetics of methyl ethyl ketone in man.

1990 ◽  
Vol 47 (5) ◽  
pp. 325-330
Author(s):  
J Liira ◽  
V Riihimaki ◽  
K Engstrom
Keyword(s):  
Methyl Ethyl Ketone ◽  
Methyl Ethyl ◽  
Kinetics Of

Kinetics of condensation of benzaldehyde and its derivatives with acetone and methyl ethyl ketone catalysed by aluminium oxide

1980 ◽  
Vol 45 (6) ◽  
pp. 1812-1819 ◽  
Author(s):  
Lubomír Nondek ◽  
Jaroslav Málek
Keyword(s):  
Methyl Ethyl Ketone ◽  
Reaction Medium ◽  
Aluminium Oxide ◽  
Hydroxy Ketone ◽  
Isokinetic Temperature ◽  
Methyl Ethyl ◽  
Rate Determining Step ◽  
Major Reaction ◽  
Increasing Temperature ◽  
Kinetics Of

Kinetics of condensation of benzaldehyde with excess acetone and methyl ethyl ketone in the liquid phase and in the presence of aluminium oxide as the catalyst was investigated in the range of temperatures from 60 to 160°C. The pseudo-first order kinetics for the condensation of benzaldehyde with acetone and the positive value of the Hammett reaction constant (ρ = 1.43 ± 0.08 at 90°C) found for the condensation of substituted benzaldehydes with acetone, both lead to the conclusion that the formation of 4-hydroxy-4-phenylbutan-2-one is the rate-determining step. The ρ constant decreases with increasing temperature and the estimated isokinetic temperature corresponds to 449 ± 8 K. At temperatures ranging from 60 to 90°C, the retroaldolisation of the above β-hydroxy ketone is the minor and the dehydration of the β-hydroxy ketone the major reaction; the proportion of the dehydration reaction increases with increasing polarity of the reaction medium and decreases with increasing temperature. In the benzaldehyde condensation with methyl ethyl ketone at 90-160°C, the formation of 1-phenyl-1-penten-3-one, which is catalysed by basic sites of aluminium oxide, is the favoured reaction. The apparent activation energy for the reaction producing the latter ketone is c. 11.5 kJ mol-1 larger than that for the formation of 4-phenyl-3-methyl-3-buten-2-one resulting from the condensation catalysed by acidic sites of the catalyst.

Sign in / Sign up

Export Citation Format

Share Document