FR2270938A1 - Chromium oxide/alumina hydrocarbon conversion catalysts - contg titanium dioxide for increased selectivity and activity - Google Patents
Chromium oxide/alumina hydrocarbon conversion catalysts - contg titanium dioxide for increased selectivity and activityInfo
- Publication number
- FR2270938A1 FR2270938A1 FR7402557A FR7402557A FR2270938A1 FR 2270938 A1 FR2270938 A1 FR 2270938A1 FR 7402557 A FR7402557 A FR 7402557A FR 7402557 A FR7402557 A FR 7402557A FR 2270938 A1 FR2270938 A1 FR 2270938A1
- Authority
- FR
- France
- Prior art keywords
- tio2
- contg
- activity
- titanium dioxide
- chromium oxide
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
- C07C5/321—Catalytic processes
- C07C5/322—Catalytic processes with metal oxides or metal sulfides
-
- 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
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/26—Chromium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
- C07C4/08—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule
- C07C4/12—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene
- C07C4/14—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by splitting-off an aliphatic or cycloaliphatic part from the molecule from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene splitting taking place at an aromatic-aliphatic bond
- C07C4/18—Catalytic processes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
- C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
- C07C5/333—Catalytic processes
- C07C5/3332—Catalytic processes with metal oxides or metal sulfides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
- C07C2521/04—Alumina
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the alkali- or alkaline earth metals or beryllium
- C07C2523/04—Alkali metals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/24—Chromium, molybdenum or tungsten
- C07C2523/26—Chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
Abstract
New hydrocarbon-conversion catalysts, esp. for the hydrodealkylation of 7-8C alkylaromatics and the dehydrogenation of 3-5C hydrocarbons, contain Cr2O3 (esp. 15-25%) Al2O3, and 1-40 (pref. 1-20) wt. % TiO2. The catalysts are pref. prepd. by (a) adding finely divided (1 mu) calcined TiO2 hydrated TiO2 and/or a cpd. convertible to TiO2, at a suitable stage in the prepn. of hydrated Al2O3; (b) extruding the mixt.; (c) heating at 300-700 degrees C; (d) impregnating with an aqs. soln. of CrO3 and alkali metal hydroxide; (e) calcining at 500-700 degrees C in air or air/steam; and (f) calcining in H2 or H2/steam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7402557A FR2270938A1 (en) | 1974-01-25 | 1974-01-25 | Chromium oxide/alumina hydrocarbon conversion catalysts - contg titanium dioxide for increased selectivity and activity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7402557A FR2270938A1 (en) | 1974-01-25 | 1974-01-25 | Chromium oxide/alumina hydrocarbon conversion catalysts - contg titanium dioxide for increased selectivity and activity |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2270938A1 true FR2270938A1 (en) | 1975-12-12 |
Family
ID=9134005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7402557A Withdrawn FR2270938A1 (en) | 1974-01-25 | 1974-01-25 | Chromium oxide/alumina hydrocarbon conversion catalysts - contg titanium dioxide for increased selectivity and activity |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2270938A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5378350A (en) * | 1988-12-12 | 1995-01-03 | Linde Aktiengesellschaft | Process and catalyst for dehydrogenation or dehydrocyclization of hydrocarbons |
US6071504A (en) * | 1997-07-09 | 2000-06-06 | Kao Corporation | Hair treatment composition comprising alkalizing agent |
-
1974
- 1974-01-25 FR FR7402557A patent/FR2270938A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5378350A (en) * | 1988-12-12 | 1995-01-03 | Linde Aktiengesellschaft | Process and catalyst for dehydrogenation or dehydrocyclization of hydrocarbons |
US6071504A (en) * | 1997-07-09 | 2000-06-06 | Kao Corporation | Hair treatment composition comprising alkalizing agent |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |