Synthesis, characterization and application in liquid phase oxidation of hydrocarbons by different oxygen sources. Mar 16, 2000 here we report the direct, electrochemical oxidation of various hydrocarbons methane, ethane, 1butene, nbutane and toluene using a solidoxide fuel cell at 973 and 1,073 k with a composite. Jun 11, 2019 polycyclic aromatic hydrocarbons pahs are among the most prominent toxic compounds in the air. Liquidphase aerobic oxidation of petroleum hydrocarbons in. Based on new experiments combined with stateoftheart kinetic and thermodynamic models, we show that phase separation plays a critical role. The liquid phase oxidation of some arylaliphatic hydrocarbons is also discussed. The rate of reaction was limited by the rate of oxygen diffusion from the gas phase due to the rapid reaction of dissolved oxygen. Liquid phase oxidation chemistry in continuousflow microreactors. The oxidation of hydrocarbons in the liquid phase kindle edition by emanuel, n. Liquid phase oxidation of alkyl aromatic hydrocarbons. Multiphase reactivity of polycyclic aromatic hydrocarbons is. They are the oxidations of benzyl alcohol, styrene, cyclohexane, and ethylbenzene.
Catalytic performance of ceria nanorods in liquidphase oxidations of hydrocarbons with tertbutyl hydroperoxide andreia g. Liquidphase oxidation of toluene by molecular oxygen over copper manganese oxides. The catalyst seems fairly stable towards leaching phenomena. Oct 15, 2015 among all ch activation processes, the liquidphase oxidation of cyclohexane to ka oil k. The ceo2 nanorods cenr promote the oxidation of ethylbenzene phet and cyclohexene with tbuooh, at temperatures as low as 55. Other readers will always be interested in your opinion of the books youve read. Liquidphase oxidation of naphthenic petroleum hydrocarbons. Regularities of liquidphase oxidation the alkyl aromatic hydrocarbons and their cyclohexyl derivatives to hydroperoxides at presence of. This article presents an overview on the state of the art of heterogeneous catalyst. Limitations of evaluation methods for inhibited oxidation. Liquidphase aerobic oxidation of petroleum hydrocarbons. Sep 01, 2004 read modeling the liquid phase oxidation of hydrocarbons over a range of temperatures and dissolved oxygen concentrations with pseudodetailed chemical kinetics, fuel on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Multiphase reactivity of polycyclic aromatic hydrocarbons.
Modeling the liquidphase oxidation of hydrocarbons over a. Liquid phase aerobic oxidation of petroleum hydrocarbons in the catalytic presence of nanosized complexes. Liquid phase and microwave assisted oxidation of some hydrocarbons, aromatic aldehydes, and phenols by cerium iv catalyzed by iridiumiii in acidic medium. Xiaoqiang li, jie xu, lipeng zhou, feng wang, jin gao, chen chen, jianbo ning, hong ma. Ciborowski industrial chemistry research institute, rydygiera 8, 01793 warsaw, poland abstract possibility of increasing alcohols and ketones yield in liquid phase hydrocarbons oxidation is discussed. At higher partial pressure of oxygen the catalysts are reversibly deactivated by oxygen. Engineering aspects of industrial liquidphase air oxidation of hydrocarbons akkihebbal krishnamurthy suresh department of chemical engineering, iit bombay, powai, mumbai 400 076, india.
Mesoporous mnceo x solid solutions for low temperature and. Search for library items search for lists search for contacts search for a library. Engineering aspects of industrial liquidphase air oxidation. Liquidphase oxidation of hydrocarbons with molecular oxygen. The oxidation cannot therefore proceed through alcohols as primary intermediates, and the hydroxylation theory is thus inapplicable to these liquid phase oxidations. For example, until now, initial stages of oxidation were not considered from a position of radical chain process. However, industrial liquidphase air oxidation of hydrocarbon uses highpressure conditions with a reaction temperature above 150 c.
Phase i metabolismoxidative reactionsoxidation of aliphatic. Nov 25, 2008 the present invention provides a process for oxidizing a hydrocarbon, which comprises subjecting the hydrocarbon to a liquid phase catalytic oxidation reaction in the presence of at least one oxidation catalyst to form an oxidized product, wherein said liquid phase comprises a solvent having a boiling point of at least 25 c. Liquid phase oxidation of alkanes download pdf info publication number ep0126488b1. Jul 17, 2018 the liquidphase oxidation of a naphtheneparaffin concentrate obtained from a mixture of azerbaijan oils is studied in the presence of a nanostructured mncontaining catalyst with a carbon basis. The influence of various reaction parameters was investigated thoroughly. The liquidphase oxidation of alkanes has been quite extensively studied. Liquid phase and microwave assisted oxidation of some. The first page of the pdf of this article appears above. The initial stage of oxidation as depicted by 1 is endothermic, while 2 and 3, and also many subsequent. Pdf liquid phase and microwave assisted oxidation of some. Liquid phase oxidation and the use of heterogeneous catalysts. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Pdf liquid phase and microwave assisted oxidation of.
Liquidphase oxidation of alkylaromatic hydrocarbons and their. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. The reaction mechanism and kinetic details of homogeneous liquid phase autoxidation have been extensively investigated. Liquidphase oxidation of hydrocarbons with molecular. Liquid phase oxidation and the use of heterogeneous.
Nikolai markovich emanuel, evgenii timofeevich denisov, and zinaida kushelevna maizus. It is suggested that the sequence hydrocarbonhydroperoxideketone represents the major course for the reaction in. The liquidphase oxidation of a naphtheneparaffin concentrate obtained from a mixture of azerbaijan oils is studied in the presence of a nanostructured mncontaining catalyst with a carbon basis. The reaction products were analyzed in aliquots taken periodically from the reaction chamber. The oxidation of hydrocarbons in the liquid phase, emanuel. This is a serious difficulty for the simulation of oil recovery process that involves air injection. Catalytic performance of ceria nanorods in liquidphase. Man yang, guo qiu, chongpin huang, xiaomeng han, yingxia li, biaohua chen. Liquidphase oxidation of oil hydrocarbons in the presence. The effects of metal ions and their ligands on product distribution in the oxidation of tetralin in acetic acid 1978, vol. The liquidphase oxidation of some arylaliphatic hydrocarbons is also discussed. Organized into 10 chapters, this book begins with a discussion of the basic concepts relating to the mechanism involved in the oxidation of hydrocarbons and other organic compounds in liquid phase reactions. Ep0126488b1 ep84105839a ep84105839a ep0126488b1 ep 0126488 b1 ep0126488 b1 ep 0126488b1 ep 84105839 a ep84105839 a ep 84105839a ep 84105839 a ep84105839 a ep 84105839a ep 0126488 b1 ep0126488 b1 ep 0126488b1 authority ep european patent office prior art keywords oxygen oxidation cobalt method butane prior art date 19830523 legal status the legal status is an.
Limitations of evaluation methods for inhibited oxidation of hydrocarbons in the liquid phase. For the selective oxidation of light alkanes, vanadium element appears. The oxidation of hydrocarbons in the liquid phase 1st. For both substrates the saturated ch bonds are preferentially activated over the unsaturated ones. In this chapter, the liquid phase oxidation reactions offour hydrocarbons over chromite spinel catalysts are analyzed in detail. Reaction engineering of emerging oxidation processes. Liquidphase oxidation of oil hydrocarbons in the presence of. Liquidphase aerobic oxidation of petroleum hydrocarbons in the catalytic presence of nanosized complexes. College of chemistry and molecular engineering, nanjing tech university, nanjing, 211816 china. Shojania feizabadi, national iranian oil company abstract. Carlos 1, and joao rocha 2, 1 department of physics, ciceco, university of aveiro, 3810193 aveiro, portugal. Heterogeneous reactions involving o3 can change the toxicity of pahs, but the reaction mechanism and kinetics remain to be elucidated. It is suggested that the sequence hydrocarbonhydroperoxideketone represents the major course for the reaction in the early stages of the oxidation.
Sep 07, 2014 in some cases, when enzymatic oxidation takes place at the penultimate carbon atom next to the terminal carbon carbon atom, known as. The oxidation cannot therefore proceed through alcohols as primary intermediates, and the hydroxylation theory is thus inapplicable to these liquidphase oxidations. The aim of this paper is to study liquid phase oxidation of alkyl aromatic hydrocarbons containing both methyl and ethyl and also isopropyl groups flmethylnaphthalene, ethylbenzene, isopropylbenzene, pmethylisopropyl benzene. Liquidphase oxidation of some aromatic aldehydes, hydrocarbons, and alcohols by ceriumiv catalyzed by iridiumiii in acidic medium. The essence of the inventive nonbarbotage oxidation process is ensuring that the oxidizing agent delivered to the process reactor undergoes continued contact only with exposed surfaces of the liquid phase of the hydrocarbons being oxidized configured as at least one of. Liquidphase oxidation of hydrocarbons and alcohols catalyzed. Durham etheses the liquid phase oxidation of hydrocarbons. Read modeling the liquidphase oxidation of hydrocarbons over a range of temperatures and dissolved oxygen concentrations with pseudodetailed chemical kinetics, fuel on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at. The oxidation of hydrocarbons in the liquid phase 1st edition. Chemical analyses, gasliquid phase chromatography g. Study of the radical chain mechanism of hydrocarbon oxidation.
Expired lifetime application number us427448a inventor arnold p schueler. Liquid phase hydrocarbon how is liquid phase hydrocarbon. Organized into 10 chapters, this book begins with a discussion of the basic concepts relating to the mechanism involved in the oxidation of hydrocarbons and other organic compounds in liquidphase reactions. The liquid phase oxidation of hydrocarbons being an account of the work carried out at the science laboratories, durham university durham division and the dysonperrin laboratories, oxford university during the period 19457 under the direction of w. This book is comprised of 35 chapters and begins with an analysis of the chain processes taking place during the oxidation of hydrocarbons and how to stimulate slow chain branching reactions. Study of the radical chain mechanism of hydrocarbon. A study was carried out on the liquidphase aerobic oxidation of a naphtheneparaffin concentrate of a diesel petroleum fraction with boiling point 217349 c in the presence of pentanuclear chromium and cobalt complexes and their mixtures with chromium and cobalt salts of natural petroleum acids. The effects of metal ions and their ligands on product distribution in the oxidation of tetralin in acetic acid. Here we report the direct, electrochemical oxidation of various hydrocarbons methane, ethane, 1butene, nbutane and toluene using a solidoxide fuel. Liquidphase ammoxidation process rohm and haas company. Buy the oxidation of hydrocarbons in the liquid phase on free shipping on qualified orders. Direct oxidation of hydrocarbons in a solidoxide fuel cell. General and prospective views on oxidation reactions in.
Liquid phase air oxidation of saturated hydrocarbons to lower. Please redirect your searches to the new ads modern form or the classic form. The oxidation of hydrocarbons in the liquid phase investigates the kinetics and mechanism of the oxidation of hydrocarbons in the liquid phase. Catalytic oxidation of alkyl substituted aromatic compounds.
The oxidation of decane in the liquid and gaseous phases. Hydroperoxides in hydrocarbons liquid phase oxidation. To investigate the initial stages of oxidation, the paper. Summaryliquidphase oxidation is discussed in terms of the free radical chain mechanism proposed. Translated from the russian edition moscow, 1965 by b. Direct oxidation of hydrocarbons in a solidoxide fuel.
Selective oxidation of cumene to the equivalent amount of dimethylbenzyl alcohol and cumene hydroperoxide. Limitations of evaluation methods for inhibited oxidation of. Based on new experiments combined with state of theart kinetic and thermodynamic models, we show that phase separation plays a critical role in the ozonolysis of. It is generally agreed that the oxidation of hydrocarbons occurs by steps such as. Liquid phase air oxidation of saturated hydrocarbons to. Us2825742a us427448a us42744854a us2825742a us 2825742 a us2825742 a us 2825742a us 427448 a us427448 a us 427448a us 42744854 a us42744854 a us 42744854a us 2825742 a us2825742 a us 2825742a authority us united states prior art keywords oxidation cyclohexane water products adipic acid prior art date 19540504 legal status the legal status is an assumption and is. Activity and selectivity of supported pd and pt catalysts have been studied in the liquid phase oxidation of hydrocarbons and alcohols to ketones and carboxylic acids. Sensitization of hydrogen bromide catalyzed oxidation reactions. In order to obtain fundamental knowledges on the manufacturing of lower fatty acids, especially of formic acid and acetic acid, by liquid phase air oxidation of petroleum and other saturated hydrocarbons, the effects of reaction factors on the oxidation of nparaffinic type hydrocarbons at 180c and at a partial pressure of oxygen below 10. Catalytic liquid phase oxidation of aromatic hydrocarbons.
Liquidphase oxidation of oxygencontaining compounds e. Liquid phase oxidation of methane at low temperature liquid phase air oxidation of hydrocarbons, notably pxylene, cumene, ethylbenzeneisobutane, cyclohexane, and nbutane, is of great scientific, technological, and. It is found that the catalyst system represents a dispersion medium containing catalyst particles with a hydrodynamic diameter of 0. The oxidation of hydrocarbons in the liquid phase ebook. Liquid phase and microwave assisted oxidation of some hydrocarbons, aromatic aldehydes, and phenols by ceriumiv catalyzed by iridiumiii in acidic medium. The yield of naphthenic acids was found to depend on the activity of the catalysts and their. It was found that the rate of these reactions is mostly controlled by mass transfer effects. Use features like bookmarks, note taking and highlighting while reading the oxidation of hydrocarbons in the liquid phase. Polycyclic aromatic hydrocarbons pahs are among the most prominent toxic compounds in the air. Topics covered include the chain reactions taking place in the liquidphase oxidation of hydrocarbons. M download it once and read it on your kindle device, pc, phones or tablets. Liquid phase oxidation of hydrocarbons with molecular oxygen. The purpose of the present invention is to provide an advantageous nonbarbotage method for oxidation of hydrocarbons, that, when implemented in various embodiments thereof, provides significantly higher selectivity, a greater level of safety, lower capital costs, etc.
Despite the abundance of in situ combustion models of oil oxidation, many of the effects are still beyond consideration. Liquid phase oxidation processes are one of main pathways to. Liquidphase oxidation of hydrocarbons has a wide range of applications in the production of a number of industrial chemicals and intermediates e. The 5h oxidation of ndodecane at 200 c by air at 1 atm is reported for experiments in a borosilicate glass reaction chamber equipped with a gas bubbler.
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