FR2146550A6 - Oxidation of o-xylene - to phthalic anhydride using a catalyst support enamelled with a silicate - Google Patents
Oxidation of o-xylene - to phthalic anhydride using a catalyst support enamelled with a silicateInfo
- Publication number
- FR2146550A6 FR2146550A6 FR7126278A FR7126278A FR2146550A6 FR 2146550 A6 FR2146550 A6 FR 2146550A6 FR 7126278 A FR7126278 A FR 7126278A FR 7126278 A FR7126278 A FR 7126278A FR 2146550 A6 FR2146550 A6 FR 2146550A6
- Authority
- FR
- France
- Prior art keywords
- xylene
- silicate
- phthalic anhydride
- catalyst
- oxidation
- 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
Links
Classifications
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Furan Compounds (AREA)
- Catalysts (AREA)
Abstract
Catalyst for gaseous phase oxidation of o-xylene for phthalic anhydride production consists of a support impregnated with a silicate enamel and coated with a catalyst layer based on titanium and vanadium oxides. The support may be beads of fused refractory material bonded with a (boron silicate) coating of fusion point 800-1200 degrees C e.g. 20-60 wt.% SiO2, 3-15% Al2O3, 0.5-16% CaO, 1-15% K2O and Na2O and 2-40% B2O. Air and o-xylene are in molar ratio 69-130 and are heated at 360-445 degrees C. The catalyst has high activity and gives high yields with improved selectivity and is mechanically stronger than known catalysts.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7126278A FR2146550A6 (en) | 1971-07-19 | 1971-07-19 | Oxidation of o-xylene - to phthalic anhydride using a catalyst support enamelled with a silicate |
GB3792671A GB1368626A (en) | 1970-08-26 | 1971-08-12 | Catalyst for the oxidation of ortho-xylene to phthalic anhydride |
NLAANVRAGE7111378,A NL173026C (en) | 1970-08-26 | 1971-08-18 | FORMED CATALYST FOR THE PREPARATION OF PHTALIC ACID ANHYDRIDE BY OXYDATION OF O-XYLENE IN THE GAS PHASE, AND A METHOD FOR PREPARING PHTALIC ACID ANHYDRIDE BY OXYDATION OF O-XYLENE USING THE USED SYSTEM. |
YU02142/71A YU214271A (en) | 1970-08-26 | 1971-08-20 | Process for obtaining a catalyst for the oxidation of o-xylene in gas phase into the phthalic acid anhydride |
US00174502A US3843552A (en) | 1970-08-26 | 1971-08-24 | Catalyst for oxidation of o-xylene |
IT52479/71A IT960539B (en) | 1970-08-26 | 1971-08-25 | CATALYSTS FOR OXIDAZONE OF O. XYLENE IN PHTHALIC DIOXIDE |
BE771772A BE771772A (en) | 1970-08-26 | 1971-08-25 | Catalysts for the oxidation of o-xylene to phthalic anhydride |
CA121,345A CA992972A (en) | 1970-08-26 | 1971-08-25 | Catalyst for oxidation of o-xylene and method |
DE2142838A DE2142838C3 (en) | 1970-08-26 | 1971-08-26 | Oxidation catalyst containing vanadium oxide and titanium oxide and its use for the production of phthalic anhydride by oxidation of o-xylene |
JP6483871A JPS5323786B1 (en) | 1970-08-26 | 1971-08-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7126278A FR2146550A6 (en) | 1971-07-19 | 1971-07-19 | Oxidation of o-xylene - to phthalic anhydride using a catalyst support enamelled with a silicate |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2146550A6 true FR2146550A6 (en) | 1973-03-02 |
Family
ID=9080534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7126278A Expired FR2146550A6 (en) | 1970-08-26 | 1971-07-19 | Oxidation of o-xylene - to phthalic anhydride using a catalyst support enamelled with a silicate |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2146550A6 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2417145A1 (en) * | 1973-04-11 | 1974-10-24 | Rhone Progil | PROCESS FOR MANUFACTURING PHTHALIC ANHYDRIDE |
-
1971
- 1971-07-19 FR FR7126278A patent/FR2146550A6/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2417145A1 (en) * | 1973-04-11 | 1974-10-24 | Rhone Progil | PROCESS FOR MANUFACTURING PHTHALIC ANHYDRIDE |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property |