DE2054077A1 - Catalyst contg vanadium pentoxide and anatase - for oxidation of aromatic or unsatd aliphatic hydrocarbons - Google Patents
Catalyst contg vanadium pentoxide and anatase - for oxidation of aromatic or unsatd aliphatic hydrocarbonsInfo
- Publication number
- DE2054077A1 DE2054077A1 DE19702054077 DE2054077A DE2054077A1 DE 2054077 A1 DE2054077 A1 DE 2054077A1 DE 19702054077 DE19702054077 DE 19702054077 DE 2054077 A DE2054077 A DE 2054077A DE 2054077 A1 DE2054077 A1 DE 2054077A1
- Authority
- DE
- Germany
- Prior art keywords
- anatase
- vanadium pentoxide
- oxidation
- aromatic
- aliphatic hydrocarbons
- 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.)
- Pending
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
- 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
-
- 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
- C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Furan Compounds (AREA)
- Catalysts (AREA)
Abstract
Description
Vanadinpentoxid und Anatas enthaltende Oxidationskatalysatoren Zusatz zu Patent . ... .. (Patentanmeldung P 20 00 040.2) Das Patent . *.. ... (Patentanmeldung P 20 00 040.2) betrifft Vanadinpentoxid und Anatas enthaltende Oxidationrkatalysatoren, die z.B. für die Oxidation von aromatischen oder ungesättigten aliphatischen Kohlenwasserstoffen mit Buft in der Gasphase zu Carbonsäuren, Dicarbonsäuren oder deren Anhydriden hervorragend geeignet sind, in denen der Anatas eine spezifische Oberfläche zwischen 10 und 30 m2/g aufweist.Oxidation catalysts containing vanadium pentoxide and anatase additive to patent. ... .. (patent application P 20 00 040.2) The patent. * .. ... (patent application P 20 00 040.2) relates to oxidation catalysts containing vanadium pentoxide and anatase, e.g. for the oxidation of aromatic or unsaturated aliphatic hydrocarbons with Buft in the gas phase to carboxylic acids, dicarboxylic acids or their anhydrides excellent are suitable in which the anatase has a specific surface between 10 and 30 m2 / g.
Der besondere Vorteil dieser Katalysatoren ist die ausgezeichnete Selektivität, die sich hinsichtlich der Bildung von Dicarbonsäuren oder deren Anhydriden bei der katalytischen Oxidation aromatischer oder ungesättigter aliphatischer Kohlenwasserstoffe entfalten.The particular advantage of these catalysts is that they are excellent Selectivity, which affects the formation of dicarboxylic acids or their anhydrides in the catalytic oxidation of aromatic or unsaturated aliphatic hydrocarbons unfold.
Es wurde nun gefunden, daß diese vorteilhafte Eigenschaft auch solche Vanadinpentoxid und Anatas enthaltende Oxidationskatalysatoren besitzen, in denen der Anatas eine spezifische Oberfläche von 8 bis 10 m2/g aufweist.It has now been found that this advantageous property also has such Have oxidation catalysts containing vanadium pentoxide and anatase in which the anatase has a specific surface area of 8 to 10 m2 / g.
Die spezifische Oberfläche ermittelt man, wie im Hauptpatent angegeben, nach der BET-Methode oder nach der Schleudermethode.The specific surface is determined as stated in the main patent, by the BET method or by the centrifugal method.
Man führt die sehr einfache Schleudermethode beispielsweise so durch, daß man zylindrische, nach unten konisch verjüngte Schleudergefäße von 12 bis 20 ccm Inhalt aus Glas, die graduiert sind, mit 10 ccm Aceton füllt und 5 g feingemahlenen und gesiebten Anatas zugibt. Die Suspension wird auf 15 ccm mit Aceton aufgefüllt, dann werden die beiden Gläser geschleudert, wobei sich der Anatas absetzt. Es bildet sich eine scharfe Trennlinie zwischen Feststoff und Flüssigkeit. In beiden Gläsern werden die ccm abgelsen, an denen sich die Trennlinie ausgebildet hat. Die Summe der an beiden Gläsern gemessenen Werte entspricht der Oberfläche des Anatas in m2/g.The very simple spin method is carried out, for example, as follows: that cylindrical centrifugal vessels tapering conically downwards from 12 to 20 cc contents of graduated glass fill with 10 cc acetone and 5 g finely ground and sifted anatase. The suspension is made up to 15 ccm with acetone, then the two glasses are spun, whereby the anatase settles. It educates there is a sharp dividing line between solid and liquid. In both glasses the ccm on which the dividing line has formed are removed. The sum of the values measured on both glasses corresponds to the surface area of the anatase in m2 / g.
Im übrigen gelten die Angaben des Hauptpatents.Otherwise, the details of the main patent apply.
Beispiel In üblicher Weise werden Trägerkatalysatoren hergestellt, die zu 94 0, (wie im folgenden Gewichtsprozent) aus Magnesiumsilikatkugeln mit einem Durchmesser von 7,5 mm und zu 6 G/s aus der katalytisch aktiven Masse bestehen. Diese aktive Masse enthält 6 % Vanadinpentoxid, 0,4 % Phosphorpentoxid und 93,6 % Anatas. Der Gesamtkatalysator enthält 0,36 % Vanadinpentoxid. Die spezifische Oberfläche des Anatas betragt nach der BET-Methode: 8,5 m2/g. Example Supported catalysts are prepared in the usual way, those to 94 0, (as in the following weight percent) of magnesium silicate balls with a Diameter of 7.5 mm and 6 G / s consist of the catalytically active material. This active mass contains 6% vanadium pentoxide, 0.4% phosphorus pentoxide and 93.6% % Anatase. The total catalyst contains 0.36% vanadium pentoxide. The specific According to the BET method, the surface area of the anatase is 8.5 m2 / g.
Ein Rohr von 3 m Länge und 25 mm lichter Weite wird mit diesen Kugeln gefüllt. 6800 1 Luft, die 270 g 98 zeigen o-Xylol/Nm enthalten, werden stündliche durch das Rohr geleitet, das mittels eines Salzbades auf derjenigen optimalen Temperatur gehalten wird, bei der die Ausbeute an Phthalsäureanhydrid am höchsten ist, wie sich durch Variation der Temperatur unschwer ermitteln läßt.A tube 3 m long and 25 mm inside diameter is attached to these balls filled. 6800 1 air, which contain 270 g 98 o-xylene / Nm3, are hourly passed through the pipe, which by means of a salt bath at the optimal temperature is maintained at which the yield of phthalic anhydride is the highest, such as can easily be determined by varying the temperature.
Als optimale Ausbeute erhält man 108 kg Phthalsäureanhydrid, bezogen auf 100 kg eingesetztes o-Xylol bei einer Badtemperatur von 390°C mit einem Toleranzbereich von +2 und -2 0C.The optimum yield is 108 kg of phthalic anhydride, based on weight o-xylene used per 100 kg at a bath temperature of 390 ° C with a tolerance range from +2 and -2 0C.
Claims (1)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702054077 DE2054077A1 (en) | 1970-11-03 | 1970-11-03 | Catalyst contg vanadium pentoxide and anatase - for oxidation of aromatic or unsatd aliphatic hydrocarbons |
| FR7047030A FR2074404A5 (en) | 1970-01-02 | 1970-12-29 | |
| GB7671A GB1326181A (en) | 1970-01-02 | 1971-01-01 | Oxidation catalysts containing vanadium pentoxide and anatase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702054077 DE2054077A1 (en) | 1970-11-03 | 1970-11-03 | Catalyst contg vanadium pentoxide and anatase - for oxidation of aromatic or unsatd aliphatic hydrocarbons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2054077A1 true DE2054077A1 (en) | 1972-05-04 |
Family
ID=5787058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702054077 Pending DE2054077A1 (en) | 1970-01-02 | 1970-11-03 | Catalyst contg vanadium pentoxide and anatase - for oxidation of aromatic or unsatd aliphatic hydrocarbons |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2054077A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3629413A1 (en) * | 1986-05-19 | 1987-11-26 | Intevep Sa | CATALYST FOR CONVERTING VANADINE-CONTAINING HYDROCARBONS, METHOD FOR THE PRODUCTION THEREOF AND METHOD FOR THE PRODUCTION OF A VANADINE PASSIVATION AGENT |
-
1970
- 1970-11-03 DE DE19702054077 patent/DE2054077A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3629413A1 (en) * | 1986-05-19 | 1987-11-26 | Intevep Sa | CATALYST FOR CONVERTING VANADINE-CONTAINING HYDROCARBONS, METHOD FOR THE PRODUCTION THEREOF AND METHOD FOR THE PRODUCTION OF A VANADINE PASSIVATION AGENT |
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