WO2008098737A1 - Catalyseur contenant une zéolithe et un liant et renfermant un composé acide contenant un niobium ou tantale - Google Patents

Catalyseur contenant une zéolithe et un liant et renfermant un composé acide contenant un niobium ou tantale Download PDF

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Publication number
WO2008098737A1
WO2008098737A1 PCT/EP2008/001059 EP2008001059W WO2008098737A1 WO 2008098737 A1 WO2008098737 A1 WO 2008098737A1 EP 2008001059 W EP2008001059 W EP 2008001059W WO 2008098737 A1 WO2008098737 A1 WO 2008098737A1
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Prior art keywords
catalyst
zeolite
binder
catalyst composition
niobium
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PCT/EP2008/001059
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German (de)
English (en)
Inventor
Friedrich Schmidt
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Süd-Chemie AG
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Publication of WO2008098737A1 publication Critical patent/WO2008098737A1/fr

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    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/076—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
    • C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G11/02—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils characterised by the catalyst used
    • C10G11/04—Oxides
    • C10G11/05—Crystalline alumino-silicates, e.g. molecular sieves
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/30—After treatment, characterised by the means used
    • B01J2229/42—Addition of matrix or binder particles
    • 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
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/86—Borosilicates; Aluminoborosilicates
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/88—Ferrosilicates; Ferroaluminosilicates
    • 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
    • C07C2523/20—Vanadium, niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2529/00—Catalysts comprising molecular sieves
    • C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
    • C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • C07C2529/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2529/00—Catalysts comprising molecular sieves
    • C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
    • C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • C07C2529/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65
    • C07C2529/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65 containing iron group metals, noble metals or copper
    • C07C2529/76—Iron group metals or copper
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/20—C2-C4 olefins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Definitions

  • a catalyst comprising a zeolite and a binder comprising a niobium or tantalum-containing acidic compound
  • the present invention relates to a catalyst comprising a catalytically active zeolite and a binder, wherein the binder consists essentially of an oxide of niobium or tantalum.
  • the catalyst is found in the acid-catalyzed conversion of hydrocarbons, in particular
  • the invention relates to a method for producing the catalyst.
  • the major refinery processes are the acid-catalyzed conversions of hydrocarbons. These include, for example, the catalytic cracking of heavy hydrocarbon fractions in the refinery sector, the hydrogenating cracking of heavy coal fractions.
  • Zeolites consist of a microporous framework structure of AIO 4 - and SiO 4 -
  • a zeolite or zeolite mineral is a crystalline substance composed of a skeleton of linked tetrahedra composed of four oxygen atoms around a cation, the skeleton being open cavities in the form of channels and pores having.
  • a structure results from gleichformi-> 5 gene pores and / or channels in which substances are transported or adsorbed.
  • the architecture of the zeolite is described by its topology. This essentially determines the catalytic activity of the zeolite, since the topology controls the transport of the educts 30 and products to and from the active site on the surface. Furthermore, the topology has an influence on the selectivity of the catalyzed reaction.
  • An object in the development of an acidic catalyst based on a zeolite is the discovery of a zeolite which has a suitable topology and a suitable porosity profile.
  • DE 102004052696 describes extrudates of a mordenite-based hydroisomerization catalyst which has a hierarchical structure of the
  • the gaps between the extrudates are in the range of millimeters, the pores between the agglomerates of zeolite crystallites within the extrudates are on the order of micrometers, the pores within the mordenite microcrystallites are in the range of a few nanometers.
  • micropores within the zeolite primary crystallites are in the range of 0.5 nm.
  • the number of acidic centers of the zeolite for the catalytic activity is of decisive importance.
  • the number of acidic centers is set by the ratio of silicon to aluminum.
  • the disadvantage, however, is that with increasing ratio of aluminum to i ⁇ silicon decreases the (hydro-) thermal stability of the catalyst.
  • Hydrothermal stability means the stability of the catalyst under conditions of elevated pressure, elevated temperature and under water vapor atmosphere.
  • Catalysts consist essentially of zirconia promoted with sulfur oxide, tungsten oxide or iron oxide.
  • the disadvantage of the new catalysts is also a relatively high sensitivity to contamination of water in the starting material, so that a complicated drying of the
  • Magnesium vanadate is e.g. less sour than
  • Niobium phosphate retains the Lewis acid properties of the ionic component, somewhat enhanced by the lower basicity of the anion (phosphate species instead of oxide ion). In addition, it has the acidity of Bronstedt's Nb 2 O 5 .
  • US Patent No. 4,652,544 discloses a solid state catalyst consisting essentially of a hydrated niobium oxide 5, which contains a phosphorus acid species on its surface in an amount sufficient to increase the acidity of the surfaces, as well as to inhibit the crystallization of the niobium oxide and retard the loss of catalytic activity after the high-temperature treatment.
  • the catalyst can be prepared by treating hydrated niobium oxide (Nb 2 O 5 .H 2 O) or an anhydride thereof with a phosphorous acid.
  • the catalyst hydrates ethylene to ethanol.
  • the catalyst shows better activity and selectivity than other solid acid catalysts.
  • the yield of ethylene glycol was 91% under optimum conditions.
  • niobium ions and niobium compounds as catalyst or catalyst component are described in summary. 5 none, such as “Niobium oxide-based materials as catalysts for acetic and partial oxidation type reactions” (JC Vedrine, Catalytic Today 28, (1996) 3-15), “Niobic acid - a new heterogeneous catalyst for processes in petrochemical and organic syntheses "by FAChernyshkova, Russian Chemical Review, Vol
  • Niobium compounds have hitherto been known in catalytics mainly as components of catalysts
  • the catalyst here is, for example, an oxide / hydroxide of the elements from the group of niobium and tantalum on a catalytically inactive support, such as, for example, aluminum oxide, magnesium oxide, a spinel, in particular magnesium aluminum oxide, a zeolite or mica.
  • JO cracking catalysts from the group of zeolites A number of possible compounds are disclosed as binders in US 2005/0236304 A1, but there is no reference to niobium- or tantalum-containing binders.
  • niobium is only used as a minor constituent of a catalyst because the chemistry of niobium has been little studied 5 and with the exception of the tantalum has almost no analogy to its homologues and neighboring elements.
  • Niobium chloride or niobium fluoride as a Lewis acid, can catalyze many reactions both on its own and on a support.
  • the disadvantage is of course the same as with catalysts based on aluminum chloride or chlorinated aluminum.
  • '0 describes the isomerization of alkanes or cycloalkanes, which is prepared by applying niobium or tantalum compounds to an already reduced precursor of Pt or Pd on alumina.
  • This niobium-containing precursor is in a non-reducing gas and at least one Fluoroalkan or
  • US-A-5,198,403 discloses a catalyst for the selective reduction of nitrous oxide with ammonia which, in addition to titanium oxide as the main constituent, also contains an oxide of nickel as the third component. Niobium is therefore also a secondary component in this catalyst.
  • niobium acid is predominantly known from the application of Sumitomo Chemical Co. Ltd. except as a hydrogenation or dehydration catalyst.
  • Process for the production of methyl isobutyl ketone from acetone over palladium on niobium acid Y. Higashio, Catalysis Today 28 (1996) 5 127-131) and from the field of photocatalytic production of hydrogen.
  • niobium-containing molecular sieves have become known.
  • Nyman et al. on sodium .0 zirconium titanium niobate molecular sieves J. Am. Chem. Soc. 123, (2001), 1529.
  • Information on the catalytic properties and in particular on the morphology and meso and macroporosity of the solid are not given.
  • AM-II catalytically active niobium
  • niobium-containing molecular sieves have not been tested for their activity in terms of hydroisomerization of paraffins nor do they have the mesoporosity of commercial molecular sieves favorable for mass transfer to the active site.
  • the large surface is usually based on a high porosity of the catalyst, either through the gaps between primary crystallites and / or through
  • the object of the present invention was therefore to provide a catalyst which is suitable for the conversion of hydrocarbons and does not have the abovementioned disadvantages of the prior art.
  • a catalyst composition (also referred to for short as “catalyst") which comprises a catalytically active zeolite and a binder, the binder consisting essentially of an oxide of niobium or tantalum.
  • substantially means that the oxides of niobium or tantalum constitute the main constituent of the binder, and the major constituent may be an amount of greater than 80% by weight, preferably greater than 90% by weight, more preferably greater than 99% by weight
  • Binders is not changed.
  • the binder component fulfills two main tasks: On the one hand, the necessary mechanical stability is imparted to a shaped article produced with the catalyst composition according to the invention, and the binder also increases the hydrothermal stability of the catalyst composition or of the molded article produced therefrom.
  • the topology and the profile of the composition are advantageously influenced by the binder used according to the invention, so that the transport of the starting materials and the products to and from the active center is controlled on the surface of the catalytically active component and thus influences the selectivity the reaction is taken. In addition, no undesirable side reactions occur.
  • a binder of a heterogeneous catalyst is inert with respect to the catalytic reaction.
  • the catalytic properties of the binder play a role only insofar as they cause unwanted side reactions. In rare cases, such.
  • the binder is deliberately chosen so that it is not only optimal for mass transfer and mechanical properties, but also plays a catalytically active role in the reaction or reaction chain.
  • the oxide of niobium or tantalum which constitutes the haptic constituent of the binder, is niobium acid of the formula Nb 2 O 5 .H 2 O (niobium acid) or tantalum pentoxide Ta 2 O 5 .H 2 O.
  • niobium acid of the formula Nb 2 O 5 .H 2 O (niobium acid) or tantalum pentoxide Ta 2 O 5 .H 2 O.
  • PSE Periodic Table of the Elements
  • Particular preference is given to niobium and tantalum and, in particular, their oxides.
  • the binder is free of metals or metal compounds, in particular oxides 5 of the group VI (transition metals) eg W, Mo, Cr and the group VIII (transition metals) eg Co, Ni, Fe, Ru, Rh, Pd, Pt and the group I (transition metals) eg Cu, Au, Ag and that the binder is vanadium-free.
  • Niobium and tantalum oxides and their precursors have a wide range of acidities, depending on the temperature at which they are finally calcined. Therefore, by using solid niobium acid or tantalum pentoxide as a binder, the acidity spectrum of a solid acid can be obtained as the main component.
  • the zeolite is in the H form, which is not limited to the zeolites listed above.
  • the catalyst may be wholly or partly in the H form.
  • JO lith is completely in H form. Complete means greater than 95%, preferably greater than 98% and particularly preferably greater than 99.5%.
  • Wt .-% zeolite to 10 wt .-% binder typically it lies in 5 ranges from 60% by weight of zeolite to 40% by weight of binder up to a range of 80% by weight to 20% by weight.
  • the ratio of zeolite to binder is 70% by weight of zeolite to 30% by weight of binder.
  • the porosity profile is adjusted by the mass ratio
  • the acidity is influenced by the interaction with the calcination temperature
  • the catalyst composition may further comprise processing aids.
  • a suitable processing aid is exn so-called peptizer such as pseudo-boehmite, alumina hydrate, etc., preferably together with water, dilute acid or dilute base.
  • peptizer such as pseudo-boehmite, alumina hydrate, etc.
  • water dilute acid or dilute base.
  • acid for example, a mineral acid, such as nitric acid, or an or-
  • ganic acid such as formic acid used.
  • an inorganic base such as ammonia is preferably used.
  • the acid or base is generally dissolved in water.
  • the peptizer used is water or dilute aqueous nitric acid. The concentration
  • > 5 ration of the non-aqueous fraction in the peptizer is generally 0 - 10 wt .-%, preferably 0 - 7 wt .-%, particularly preferably 0 - 5 wt .-%.
  • a processing aid water may be added to the catalyst to wet the zeolite and the binder.
  • the addition of processing aids influences the mixing process, so that the porosity profile, in particular the gap size between primary crystallites and / or the size of the gap, can be influenced between agglomerates of proline crystallites.
  • a shaped article, in short the actual catalyst, is prepared starting from the composition according to the invention by mixing the zeolite and the binder and extruding the resulting mixture. In principle, all extruder types known to the person skilled in the art are suitable extruders.
  • a twin-screw extruder For example, a twin-screw extruder. If processing aids such as peptizers or water are used, these agents are used together with the zeolite and binder at the beginning of the extrusion process.
  • the invention thus also relates to a shaped catalyst comprising the catalyst composition according to the invention.
  • the Katalysatorformkorper is prepared by the method described above.
  • the catalyst form can be extruded into any shape, such as rings, rods, cavities, honeycombs, etc., or can simply be present as a bulk catalyst.
  • the> 5 mixture is dried at 80 to 120 0 C and / or then calcined at temperatures of 250 to 600 0 C.
  • the catalyst is calcined after drying at temperatures between 300 and 350 0 C.
  • a difference of the catalyst according to the invention to the known catalysts is that a more hydrolytically stable zeolite is imparted by the binder with additional acidity.
  • the binders used according to the invention have the advantage that
  • the acidity of the binder is increased, while for example aluminosilicates by adsorption of water or ammonia partially blocked the acidic centers 5 will be.
  • aluminosilicates by adsorption of water or ammonia partially blocked the acidic centers 5 will be.
  • the catalyst according to the invention is useful for the conversion of hydrocarbons, in particular for the conversion of methanol to olefins and more particularly for the conversion of methanol to lower olefins and for the conversion of olefins, in particular for the cleavage of olefins, i. the propylur method, or to crack hydrocarbons, i.
  • FCC fluid ca- talytic cracking
  • HC hydrocracking
  • the catalyst is generally used for reactions in the presence of steam, in which a (hydro) thermally stable zeolite must be used, the catalyst must be characterized by a permanently high acidity.
  • the catalyst according to the invention is very particularly preferably used in MTP® processes or in the propylur process, as are currently used without niobium component from Lurgi.
  • the MTP® process is used to produce propylene from methanol - the propylur process is a
  • polypropylene can be made from propylene.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

La présente invention concerne un catalyseur contenant une zéolithe catalytiquement active et un liant, le liant étant sensiblement constitué d'un oxyde de niobium ou de tantale. Le catalyseur trouve une application dans la transformation catalytique acide d'hydrocarbures, notamment lors de la conversion d'oléfine ou lors de la fission d'hydrocarbures. L'invention concerne également un procédé de production du catalyseur.
PCT/EP2008/001059 2007-02-14 2008-02-13 Catalyseur contenant une zéolithe et un liant et renfermant un composé acide contenant un niobium ou tantale WO2008098737A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007007325A DE102007007325A1 (de) 2007-02-14 2007-02-14 Katalysator, enthaltend einen Zeolithen und einen Binder, der eine Niob oder Tantal enthaltende saure Verbindung umfasst
DE102007007325.0 2007-02-14

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WO2008098737A1 true WO2008098737A1 (fr) 2008-08-21

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DE102010061853A1 (de) * 2010-11-24 2012-05-24 Technische Universität Dresden Verfahren und Anlage zur Reinigung von Brennrohgasen der Biomassevergasung
DE102014205760A1 (de) 2014-03-27 2015-10-01 Johnson Matthey Public Limited Company Verfahren zum Herstellen eines Katalysator sowie Katalysator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302621A (en) * 1980-10-29 1981-11-24 Mobil Oil Corporation Shape selective reactions utilizing zeolites modified with Group V A metals
EP0178723A2 (fr) * 1984-10-11 1986-04-23 Catalysts & Chemicals Industries Co., Ltd. Composition catalytique pour le craquage catalytique des hydrocarbures
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