scholarly journals Sphere-Shaped Mn3O4 Catalyst with Remarkable Low-Temperature Activity for Methyl–Ethyl–Ketone Combustion

2017 ◽  
Vol 51 (11) ◽  
pp. 6288-6297 ◽  
Author(s):  
Hua Pan ◽  
Yanfei Jian ◽  
Changwei Chen ◽  
Chi He ◽  
Zhengping Hao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Methyl Ethyl Ketone ◽  
Methyl Ethyl

The slow oxidation of gaseous methyl ethyl ketone

1950 ◽  
Vol 201 (1064) ◽  
pp. 26-39 ◽  
Keyword(s):  
Low Temperature ◽  
Methyl Ethyl Ketone ◽  
Oxygen Pressure ◽  
Volume Ratio ◽  
Initial Pressure ◽  
Inert Gases ◽  
Methyl Ethyl ◽  
Sharp Maximum ◽  
Temperature Mode ◽  
Branching Chains

The kinetics of the reaction between oxygen and gaseous methyl ethyl ketone (butanone) have been investigated in the range 250 to 450° C. The anomalous temperature coefficient of the rate offers a good example of the transition from a low-temperature mode of oxidation to a high-temperature mode. Similar behaviour has been observed with hydrocarbons and is ascribable to the diminishing part played at higher temperatures by the peroxides, which at low temperatures play a key role in generating branching chains. In the low-temperature range the rate of oxidation varies steeply with the initial pressure of butanone and is a very unusual function of the oxygen pressure, passing through a sharp maximum at certain pressures above which the rate falls and then tends to become constant. The maximum tends to disappear as the temperature is raised. Increase of the surface / volume ratio causes a diminution in rate, while addition of inert gases has no appreciable influence. The various complex relationships are well accounted for in their general form by a modification of the theory previously applied to pentane and hexane. This theory postulates a series of reaction steps of maximum simplicity, permitting a slow branching of chains by fission of peroxides. It leads to a rate expression which according to circumstances may become infinite at certain critical concentrations or remain finite throughout. The critical limits may be related to explosions or cool flames. In the application to butanone oxidation the peculiar form of the dependence of rate on oxygen pressure may be accounted for and a general account given of the observed cool-flame limits. The agreement of the theory with a number of rather unusual facts is considered to be of greater significance than its lack of quantitative accuracy which is ascribed to the approximate nature of its basis.

Tuning the micromorphology and exposed facets of MnOx promotes methyl ethyl ketone low-temperature abatement: boosting oxygen activation and electron transmission

2018 ◽  
Vol 8 (15) ◽  
pp. 3863-3875 ◽  
Author(s):  
Yanfei Jian ◽  
Mudi Ma ◽  
Changwei Chen ◽  
Chao Liu ◽  
Yanke Yu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Methyl Ethyl Ketone ◽  
Oxygen Activation ◽  
Methyl Ethyl ◽  
Electron Transmission ◽  
Exposed Facets

MnOx nanowires with highly exposed {101} facets of Mn3O4 possess excellent low-temperature activity and stability for methyl ethyl ketone destruction.

scholarly journals ON THE REPLACE ABILITY OF SOLVENT IN THE PROCESS OF LOW TEMPERATURE DE-WAXING OF OILS

2020 ◽  
Vol 2018 (1) ◽  
pp. 38-39
Author(s):  
Tat'yana Raskulova ◽  
Mihail Fereferov ◽  
Marina Kurbatova ◽  
Mariya Cherencova ◽  
Irina Polyak
Keyword(s):  
Low Temperature ◽  
Methyl Ethyl Ketone ◽  
Methyl Isobutyl Ketone ◽  
Methyl Ethyl ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone

The replace ability of traditional complex solvent (toluene – methyl ethyl ketone) for low temperature de-waxing with an individual methyl isobutyl ketone is considered.

scholarly journals LOW TEMPERATURE DEWAXING OF OILS IN PRESENCE INDIVIDUAL SOLVENT

2018 ◽  
Vol 1 (12) ◽  
pp. 69-72
Author(s):  
Marina Kurbatova ◽  
Mariya Cherencova ◽  
Tat'yana Raskulova ◽  
Mihail Fereferov ◽  
Aleksey Ryabcov
Keyword(s):  
Low Temperature ◽  
Methyl Ethyl Ketone ◽  
Methyl Isobutyl Ketone ◽  
Methyl Ethyl ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone

The replace ability of traditional complex solvent (toluene – methyl ethyl ketone) for low temperature de-waxing with an individual methyl isobutyl ketone is considered.

scholarly journals CATALYSTS OF OXIDATION REACTION OF BUTENE-1 TO METHYLETHYLKETONE

2018 ◽  
Vol 61 (2) ◽  
pp. 53
Author(s):  
Minira M. Agaguseynova ◽  
Gunel I. Amanullayeva ◽  
Zehra E. Bayramova
Keyword(s):  
Binary System ◽  
Low Temperature ◽  
Molecular Oxygen ◽  
Methyl Ethyl Ketone ◽  
Oxidation Reaction ◽  
Molar Ratio ◽  
Palladium Chloride ◽  
Methyl Ethyl ◽  
Complex Catalyst ◽  
Mild Conditions

The available and simple metal complex systems of catalytic oxidation of unsaturated hydrocarbons were developed. It is shown that these systems catalyze the selective liquid-phase oxidation of butene-1 to methyl ethyl ketone by molecular oxygen at low temperature. The best results were revealed using Cu(I)Cl monovalent chloride. The catalyst for the production of methylethylketone is a binary system containing complexes of copper and palladium chloride at a molar ratio of 2:1. Hexamethylphosphoramide is used as the ligand and palladium chloride complex as an additional complex contains benzonitrile. A combined catalyst has been offered. It allows to carry out the oxidation reaction of butene to methyl ethyl ketone under mild conditions (low temperature, atmospheric pressure) with high selectivity and yield of the desired product. The proposed binary system is able to coordinate molecular oxygen and butene-1, and thus it becomes possible to conduct the oxidation reaction not directly between butene-1 and O2, and using a specific complex catalyst system allowing them to react with each other in an activated coordinated state. Absorption properties of catalysts synthesized on the bases of transition metals have been studied and activation of molecular oxygen and butane-1 has been determined. As a result of interaction of coordinated oxygen and butane-1 it is possible to carry out oxidation reaction to methylethylketone in mild condition. The specific feature of the offered binary catalyst is irreversible absorption of molecular oxygen. Mild conditions of the reaction proceeding decreases considerably amount of by-products and simplify obtaining and separation of the main product-methylethylketone. Due to the fact that the absorption of O2 is irreversible and it is possible to easily remove the excess amount of O2 after the formation of the oxygen complex. The developed method has the advantage from the point of view of safety.Forcitation:Agaguseynova M.M., Amanullayeva G.I., Bayramova Z.E. Catalysts of oxidation reaction of butene-1 to methylethylketone. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 2. P. 53-57

Highly efficient synthesis of methyl ethyl ketone oxime through ammoximation over Ti-MOR catalyst

2014 ◽  
Vol 34 (1) ◽  
pp. 243-250
Author(s):  
Jianghong DING ◽  
Le XU ◽  
Hao XU ◽  
Haihong WU ◽  
Yueming LIU ◽  
...  
Keyword(s):  
Methyl Ethyl Ketone ◽  
Methyl Ethyl ◽  
Efficient Synthesis ◽  
Highly Efficient
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