GB1391313A - Catalysts for the preparation of phthlic anhydirde - Google Patents

Catalysts for the preparation of phthlic anhydirde

Info

Publication number
GB1391313A
GB1391313A GB4672272A GB4672272A GB1391313A GB 1391313 A GB1391313 A GB 1391313A GB 4672272 A GB4672272 A GB 4672272A GB 4672272 A GB4672272 A GB 4672272A GB 1391313 A GB1391313 A GB 1391313A
Authority
GB
United Kingdom
Prior art keywords
naphthalene
xylene
air
space velocity
phthalic anhydride
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
GB4672272A
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.)
Nippon Shokubai Co Ltd
Original Assignee
Nippon Shokubai 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 Nippon Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to GB4672272A priority Critical patent/GB1391313A/en
Publication of GB1391313A publication Critical patent/GB1391313A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts 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
    • B01J23/20—Vanadium, niobium or tantalum
    • B01J23/22—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/195—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium or tantalum
    • B01J27/198—Vanadium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/313—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with molecular oxygen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Furan Compounds (AREA)

Abstract

1391313 Phthalic anhydride NIPPON SHOKUBAI KAGAKU KOGYO CO Ltd 30 Oct 1972 46722/72 Heading C2C [Also in Division B1] Phthalic anhydride is prepared by the vapour phase oxidation of either ortho-xylene or naphthalene with a molecular oxygen-containing gas in the presence of a catalyst comprising an active composition containing TiO 2 , V 2 0 5 , Nb 2 O 5 , P 2 O 5 and K 2 0 and/or C5 2 0 in specified proportions supported on a silicon-carbide containing carrier, wherein the active composition and carrier have defined porosity or pore diameter characteristics respectively (see Division Bl). The oxidation conditions are: (i) for o-xylene feed 330-420‹ C., a xylene concentration of 15 to 40 l. air/ xylene and a space velocity of 2000-8000 hr.-<SP>1</SP>, and (ii) for naphthalene feed 380-440‹ C., a naphthalene concentration of 20 to 40 1. air/g. naphthalene and a space velocity of 2000-6000 hr.-<SP>1</SP>.
GB4672272A 1972-10-30 1972-10-30 Catalysts for the preparation of phthlic anhydirde Expired GB1391313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4672272A GB1391313A (en) 1972-10-30 1972-10-30 Catalysts for the preparation of phthlic anhydirde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4672272A GB1391313A (en) 1972-10-30 1972-10-30 Catalysts for the preparation of phthlic anhydirde

Publications (1)

Publication Number Publication Date
GB1391313A true GB1391313A (en) 1975-04-23

Family

ID=10442345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4672272A Expired GB1391313A (en) 1972-10-30 1972-10-30 Catalysts for the preparation of phthlic anhydirde

Country Status (1)

Country Link
GB (1) GB1391313A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481304A (en) * 1978-11-29 1984-11-06 Nippon Shokubai Kagaku Kogyo Co. Ltd. Catalyst for producing phthalic anhydride

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481304A (en) * 1978-11-29 1984-11-06 Nippon Shokubai Kagaku Kogyo Co. Ltd. Catalyst for producing phthalic anhydride

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years