BE809873A - 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 activity

Info

Publication number
BE809873A
BE809873A BE139924A BE139924A BE809873A BE 809873 A BE809873 A BE 809873A BE 139924 A BE139924 A BE 139924A BE 139924 A BE139924 A BE 139924A BE 809873 A BE809873 A BE 809873A
Authority
BE
Belgium
Prior art keywords
tio2
contg
activity
titanium dioxide
chromium oxide
Prior art date
Application number
BE139924A
Other languages
French (fr)
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 filed Critical
Publication of BE809873A publication Critical patent/BE809873A/en

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
    • C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
    • C07C5/333—Catalytic processes
    • C07C5/3332—Catalytic processes with metal oxides or metal sulfides
    • 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
    • C07C5/321—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
    • C07C5/321—Catalytic processes
    • C07C5/322—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
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • 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

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.
BE139924A 1972-05-03 1974-01-17 Chromium oxide/alumina hydrocarbon conversion catalysts - contg titanium dioxide for increased selectivity and activity BE809873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO70756A RO57356A2 (en) 1972-05-03 1972-05-03

Publications (1)

Publication Number Publication Date
BE809873A true BE809873A (en) 1974-05-16

Family

ID=20090624

Family Applications (1)

Application Number Title Priority Date Filing Date
BE139924A BE809873A (en) 1972-05-03 1974-01-17 Chromium oxide/alumina hydrocarbon conversion catalysts - contg titanium dioxide for increased selectivity and activity

Country Status (2)

Country Link
BE (1) BE809873A (en)
RO (1) RO57356A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998029365A1 (en) * 1996-12-27 1998-07-09 Basf Aktiengesellschaft Method for producing olefins, in particular propylenes, by dehydrogenation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998029365A1 (en) * 1996-12-27 1998-07-09 Basf Aktiengesellschaft Method for producing olefins, in particular propylenes, by dehydrogenation

Also Published As

Publication number Publication date
RO57356A2 (en) 1974-12-15

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