GB803901A - Improvements in the preparation of aromatic nitriles and imides - Google Patents

Improvements in the preparation of aromatic nitriles and imides

Info

Publication number
GB803901A
GB803901A GB28581/56A GB2858156A GB803901A GB 803901 A GB803901 A GB 803901A GB 28581/56 A GB28581/56 A GB 28581/56A GB 2858156 A GB2858156 A GB 2858156A GB 803901 A GB803901 A GB 803901A
Authority
GB
United Kingdom
Prior art keywords
catalyst
vanadium
xylene
tin
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB28581/56A
Inventor
David James Hadley
Edward James Gasson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB28581/56A priority Critical patent/GB803901A/en
Publication of GB803901A publication Critical patent/GB803901A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00Preparation of carboxylic acid nitriles
    • C07C253/24Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063Titanium; Oxides or hydroxides thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002Mixed oxides other than spinels, e.g. perovskite
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20Vanadium, niobium or tantalum
    • B01J23/22Vanadium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • B01J35/61310-100 m2/g
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00Carboxylic acid nitriles
    • C07C255/01Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
    • C07C255/02Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms of an acyclic and saturated carbon skeleton
    • C07C255/03Mononitriles
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00Carboxylic acid nitriles
    • C07C255/49Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C255/50Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of non-condensed six-membered aromatic rings
    • C07C255/51Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of non-condensed six-membered aromatic rings containing at least two cyano groups bound to the carbon skeleton
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00Constitutive chemical elements of heterogeneous catalysts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/40Constitutive chemical elements of heterogeneous catalysts of Group IV (IVA or IVB) of the Periodic Table
    • B01J2523/47Titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/50Constitutive chemical elements of heterogeneous catalysts of Group V (VA or VB) of the Periodic Table
    • B01J2523/55Vanadium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Catalysts for use in the production of aromatic nitriles or imides by the reaction in vapour phase of alkyl aromatic hydrocarbons with ammonia and oxygen comprise mixtures of vanadium and tin oxides deposited on activated alumina, which has been previously heated, prior to deposition of the catalyst to a temperature between 1000 DEG and 1500 DEG C. The catalyst may be prepared by co-precipitating the vanadium and tin oxide from a mixed solution of their salts on to the support, or the support may be impregnated with a solution of the soluble salts of the two metals, dried and heated in air or oxygem to oxidize the salts to the corresponding oxides. The alumina is preferably preheated between 12 and 24 hours in air. The mixed oxides are preferably deposited on to the heat-treated activated alumina, by evaporating a solution of vanadyl oxalate and stannous chloride on to the alumina. The catalyst is then heated in air to about 350 DEG to 400 DEG C. Suitable proportions of vanadium and tin oxides are 0.1 to 20 per cent by weight of the total catalyst, and the relative proportions of vanadium to tin are preferably in the atomic ratio of 2 : 1. The catalyst may be diluted with an inert substance such as brick, pumice, or carborundum. Examples are given by the preparation of the catalyst using varying proportions of vanadium to tin oxide. A further example also describes the preparation of a similar catalyst not supported on heat treated alumina.ALSO:The invention comprises a process for the production of aromatic nitriles or imides by contacting at an elevated temperature a mixture in the vapour phase of an alkyl substituted aromatic hydrocarbon or its nuclear substituted monohalo derivative, ammonia and molecular oxygen with a catalyst comprising mixtures of vanadium oxide and tin oxide deposited on activated alumina, which has been preheated prior to deposition of the catalyst, between 1000 DEG and 1500 DEG C. The starting materials used for the process are benzene, or naphthalene or their nuclear substituted monohalo derivatives, substituted by at least one group of formula: <FORM:0803901/IV (b)/1> where R represents hydrogen or C1-C2 alkyl. Suitable alkyl substituted aromatic hydrocarbons are toluene, ethylbenzene, o, m and p xylene, mesitylene, o, m and p di-isopropyl benzene, o, m and p cymene, o, m or p chlorotoluene and a and b methylnaphthalenes or mixtures thereof. The proportion of vanadium and tin oxide in the catalyst may be between 0.1 and 20 per cent based on the weight of the total catalyst. The relative proportions of vanadium to tin are preferably in the atomic ratio of 2:1, and the active catalyst granules are preferably diluted with an inert material such as brick, pumice or carborundum. The reaction may be carried out between 300 DEG and 500 DEG C. for a contact time of e.g. 0.25 to 20 seconds. The vapour phase catalysis may be carried out in a stationary or moving bed, preferably a fluidized bed. Suitable ratios of ammonia to alkyl substituted hydrocarbon are at least 1 1/2 to 2 times the theoretical amount of ammonia needed for the stoichiometric reaction, and suitable concentrations of alkyl-substituted aromatic hydrocarbon are not more than 2 per cent by volume of the total gaseous reaction mixture. The gas mixture fed to the reaction chamber should preferably contain at least 5 per cent by volume of oxygen and at least 3 mols. of oxygen per mol. of hydrocarbon. Suitable mixtures are air or mixtures of air with oxygen. Examples are given illustrating the process of the invention of the preparation of terephthalonitrile and p-tolunitrile from p-xylene and isophthalonitrile from meta-xylene. Other reactions mentioned are the preparation of benzonitrile from toluene or ethylbenzene, phthalimide, o-tolunitrile and phthalonitrile from o-xylene, m-tolunitrile from m-xylene and tricyanobenzene from mesitylene. An example is also given of the preparation of terephthalonitrile from p-xylene using a catalyst consisting solely of mixed tin and vanadium oxides, not supported on alumina.
GB28581/56A 1956-09-19 1956-09-19 Improvements in the preparation of aromatic nitriles and imides Expired GB803901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28581/56A GB803901A (en) 1956-09-19 1956-09-19 Improvements in the preparation of aromatic nitriles and imides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28581/56A GB803901A (en) 1956-09-19 1956-09-19 Improvements in the preparation of aromatic nitriles and imides

Publications (1)

Publication Number Publication Date
GB803901A true GB803901A (en) 1958-11-05

Family

ID=10277873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28581/56A Expired GB803901A (en) 1956-09-19 1956-09-19 Improvements in the preparation of aromatic nitriles and imides

Country Status (1)

Country Link
GB (1) GB803901A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236494B (en) * 1963-10-22 1967-03-16 Showa Denko Kk Process for the production of aromatic nitriles
DE1290125C2 (en) * 1963-11-06 1974-04-11 PROCESS FOR THE PREPARATION OF BENZONITRILE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236494B (en) * 1963-10-22 1967-03-16 Showa Denko Kk Process for the production of aromatic nitriles
DE1290125C2 (en) * 1963-11-06 1974-04-11 PROCESS FOR THE PREPARATION OF BENZONITRILE
DE1290125B (en) * 1963-11-06 1974-04-11

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