maleic anhydride oxidation

    maleic anhydride oxidation,

    Maleic Anhydride Latest Prices | Global Price Database

    maleic-anhydride 26 Maleic Anhydride (a.k.a. MAN) is a white crystalline solid with an acrid odor at room temperature. It is a multifunctional chemical intermediate intermediate of several chemical routes. Its major use is in the production of unsaturared polyester resins (UPR). Data Type: chem-pricing Prices This chart presents Maleic .

    Oxidation of ortho-xylene to phthalic anhydride using a .

    The oxidation products obtained were phthalic anhydride, maleic anhydride, o-toluic aldehyde, carbon dioxide and water. The first three were determined quantitatively and carbon dioxide and water were detected qualitatively. Various volumes of catalyst 20, 30, 40, and 50 ml were used throughout the course of this investigation. It was found,

    Maleic acid - Wikipedia

    In industry, maleic acid is derived by hydrolysis of maleic anhydride, the latter being produced by oxidation of benzene or butane. Maleic acid is an industrial raw material for the production of glyoxylic acid by ozonolysis. Maleic acid may be used to form acid addition salts with drugs to make them more stable, such as indacaterol maleate.

    Maleic acid - Wikipedia

    In industry, maleic acid is derived by hydrolysis of maleic anhydride, the latter being produced by oxidation of benzene or butane. Maleic acid is an industrial raw material for the production of glyoxylic acid by ozonolysis. Maleic acid may be used to form acid addition salts with drugs to make them more stable, such as indacaterol maleate.

    maleic anhydride oxidation,

    US3293268A - Production of maleic anhydride by oxidation .

    1. a method for the preparation of maleic anhydride, which comprises oxidizing a reactent consisting essentially of a saturated aliphatic hydrocarbon having from 4 to 10 carbon atoms, at temperatures of from 500* to 600*c., in the presence of a phosphorus-vanadium-oxygen-containing complex catalyst selected from the group consisting of: (a) a catalyst prepared by reacting phosphoric acid with .

    Maleic Anhydride - The Chemical Company

    TCC's Maleic Anhydride is an organic compound with the formula C2H2(CO)2O. It is the acid anhydride of maleic acid and in its pure state is a colorless or white solid with an acrid odor. Maleic anhydride was traditionally manufactured by the oxidation of benzene or other aromatic compounds.

    maleic anhydride oxidation,

    Maleic anhydride CAS#: 108-31-6 - chemicalbook

    Maleic anhydride (butenedioic anhydride, toxilic anhydride, 2,5- dioxofuran ) is an organic compound with the formula C 2 H 2 (CO) 2 O. It is the acid anhydride of maleic acid and in its pure state it is a colourless or white solid with an acrid odour. Chemical Properties: Maleic anhydride is colorless needles, white lumps, or pellets.

    AP-42, CH 6.14: Maleic Anhydride - US EPA

    oxidation process. 6.14.2 Process Description2 Maleic anhydride is produced by the controlled air oxidation of benzene, illustrated by the following chemical reaction: V2O5 2C6H6 +9O2 >2C4H2O3+H2O+ 4CO2 MoO3 Benzene Oxygen Catalyst Maleic Water Carbon > anhydride dioxide Vaporized benzene and air are mixed and heated before entering the tubular .

    VPO catalyst for n -butane oxidation to maleic anhydride .

    This review describes recent findings in the oxidation of n -butane to maleic anhydride. The process is commercial since the 80's, but yet the yield is far from being optimised. Therefore, it represents an emblematic example.

    Oxidation of 5-hydroxymethylfurfural to maleic anhydride .

    5-Hydroxymethylfurfural (HMF) was converted to maleic anhydride in 52% yield via selective oxidation with molecular oxygen using VO(acac)2 as catalyst in liquid phase.

    Selective oxidation for the production of chemicals - Topsoe

    hexahydrophthalic anhydride phthalic anhydride oxidehydrogenation paraffin olefin oxidehydrogenation olefin diolefin allylic oxidation (H–abstraction) 2,5–dihydrofuran furan allylic oxidation (H–abstraction) tetrahydrophthalic anhydride phthalic anhydride allylic oxidation (H–abstraction) benzene maleic anhydride electrophilic oxygen .

    The catalytic oxidation of n-butane to maleic anhydride .

    The oxidation of n-butane to maleic anhydride also has been compared by using fixedbed and membrane reactors with the same VPO catalyst. The effects of operating conditions on the conversion of n-butane, the selectivity to maleic anhydride, and the yield of maleic anhydride …

    Butane Oxidation to Maleic Anhydride: Kinetic Modeling and .

    Nov 20, 2003· Reactor technology for maleic anhydride continues its evolution. New processes achieve higher yields with lower investment by operating in a net reducing environment where the oxygen concentration is lower than that required stoichiometrically to react all of the butane. In this paper, we examined a wide range of operating conditions to quantify the effect of a reducing environment on maleic .

    Process Intensification of n -Butane Oxidation to Maleic .

    The oxidation of n-butane to maleic anhydride over an industrial vanadyl pyrophosphate oxide catalyst was investigated experimentally in millistructured reactors with varying slit widths to investigate the process intensification potential of this reaction.

    CHAPTER 3 ESTERFICATION OF MALEIC ANHYDRIDE WITH …

    CHAPTER 3 ESTERFICATION OF MALEIC ANHYDRIDE WITH ETHANOL The catalyst plays an important role in many reactions such as alkylation, acylation, cyclization, aldol condensation, Knoevenagel condensation, oxidation, reduction, isomerisation, disproportionation,

    (PDF) Butane Oxidation to Maleic Anhydride: Kinetic .

    6730 Ind. Eng. Chem. Res. 2003, 42, 6730-6742 Butane Oxidation to Maleic Anhydride: Kinetic Modeling and Byproducts Marı´a J. Lorences,†,‡ Gregory S. Patience,*,§,| Fernando V. Dı´ez,† and Jose´ Coca† Department of Chemical Engineering and Environmental Technology, University of Oviedo, Julian Claverı´a s/n, Oviedo, Asturias, Spain 33209, and DuPont Ibe´ rica SA, Tamo´ n .

    US3864280A - Catalyst for a n-butane oxidation to maleic .

    An improved vanadium-phosphorus mixed oxide is prepared by a unique method employing an organic medium. The substantial intrinsic surface area and the microcrystalline structure of the new oxide result in advantageous activity and selectivity effects in the catalyzed vapor phase oxidation of n-butane to maleic anhydride. These oxides are also useful for the production of acid anhydrides from .

    Maleic Anhydride Production from Butane | Intratec

    Maleic Anhydride Maleic Anhydride Production from Butane (1) US Patent 4118403 issued to Monsanto in 1978 (assigned to Huntsman in 1994) (2) US Patent 6090245, issued to Huntsman in 2000. This report presents an up-to-date, detailed cost analysis of Maleic Anhydride production from butane via partial oxidation process.

    Oxidation of ortho-xylene to phthalic anhydride using a .

    The oxidation products obtained were phthalic anhydride, maleic anhydride, o-toluic aldehyde, carbon dioxide and water. The first three were determined quantitatively and carbon dioxide and water were detected qualitatively. Various volumes of catalyst 20, 30, 40, and 50 ml were used throughout the course of this investigation. It was found,

    Maleic Anhydride | Technobell Technology

    Maleic Anhydride is produced by the partial oxidation of butane with air over a vanadium/phosphorus catalyst. Low concentration (PPM range) of stabilizer (SAS) is added to the feed gas stream to stabilize catalyst activity and selectivity.

    Maleic anhydride via butane oxidation - Malow - 1985 .

    Halcon SD Technology, New York, N.Y. 10016; Search for more papers by this author. Monroe Malow, Sc.D, is director ofprocess Development for Halcon SD Group, Inc.,New York City, subsidiary of Texas Eastern Corporation.

    Vanadium-phosphorous-oxygen industrial catalysts for C4 .

    phthalic anhydride and benzene to maleic anhydride by supported V^O^ catalysts are examples of selective oxidation processes. A current application of hydrocarbon selective oxidation involves the partial oxida­ tion of hydrocarbons to maleic anhydride by vanadium-phosphorus mixed oxide catalysts.

    Maleic Anhydride (MA) Production and Manufacturing Process

    Maleic anhydride (MA) is produced commercially by the oxidation of benzene or butane. Although the butane-based process is considered to have superior economics and is the preferred route used by most producers, Lonza claims its fixed bed benzene route is competitive in low …

    Maleic anhydride | chemical compound | Britannica

    In styrene-maleic anhydride copolymer. Maleic anhydride is a white solid obtained by the oxidation of benzene or butane. These two monomers can be mixed in a bulk process and induced to polymerize under the action of free-radical initiators. The result is a polymer with …

    CHAPTER 3 ESTERFICATION OF MALEIC ANHYDRIDE WITH …

    CHAPTER 3 ESTERFICATION OF MALEIC ANHYDRIDE WITH ETHANOL The catalyst plays an important role in many reactions such as alkylation, acylation, cyclization, aldol condensation, Knoevenagel condensation, oxidation, reduction, isomerisation, disproportionation,

    professional manufacturer of Maleic Anhydride, Phthalic .

    Maleic anhydride is produced by gas phase oxidation of n-butane, which converts the methyl group to a carboxylate and dehydrogenates the backbone. The selectivity of the process reflects the robustness of maleic anhydride and its conjugated double bond system

    Oxidation of 5-hydroxymethylfurfural to maleic anhydride .

    1 Supporting Information for Oxidation of 5-hydroxymethylfurfural to maleic anhydride with molecular oxygen Zhongtian Du,a Jiping Ma,a,b Feng Wang,a Junxia Liu,a,b and Jie Xu a,* a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

    PRODUCTION OF MALEIC ANHYDRIDE FROM OXIDATION OF …

    PRODUCTION OF MALEIC ANHYDRIDE FROM OXIDATION OF n-BUTANE By SAJJAD KHUDHUR ABBAS P81540 A design project submitted to the Faculty of Engineering and Built Environment

    Maleic anhydride - Wikipedia

    Water scrubbing and subsequent dehydration of the maleic acid stream are required to purify and reform the remaining maleic anhydride. The commercial catalyst for benzene oxidation is alumina- or silica-supported V 2 O 5, M0O 3, and a small amount of Na 2 O. Molybdenum is the most popular element, but phosphorus and the alkali and alkaline .

    AP-42, CH 6.14: Maleic Anhydride - US EPA

    oxidation process. 6.14.2 Process Description2 Maleic anhydride is produced by the controlled air oxidation of benzene, illustrated by the following chemical reaction: V2O5 2C6H6 +9O2 >2C4H2O3+H2O+ 4CO2 MoO3 Benzene Oxygen Catalyst Maleic Water Carbon > anhydride dioxide Vaporized benzene and air are mixed and heated before entering the tubular .

    Maleic acid | chemical compound | Britannica

    Maleic acid, unsaturated organic dibasic acid, used in making polyesters for fibre-reinforced laminated moldings and paint vehicles, and in the manufacture of fumaric acid and many other chemical products. Maleic acid and its anhydride are prepared industrially by the catalytic oxidation of

    Pre:cbschina
    Next:1 micron fused silica powder suppliers micro size