AU559929B2 - Zeolite catalyst - Google Patents

Zeolite catalyst

Info

Publication number
AU559929B2
AU559929B2 AU10370/83A AU1037083A AU559929B2 AU 559929 B2 AU559929 B2 AU 559929B2 AU 10370/83 A AU10370/83 A AU 10370/83A AU 1037083 A AU1037083 A AU 1037083A AU 559929 B2 AU559929 B2 AU 559929B2
Authority
AU
Australia
Prior art keywords
zeolite catalyst
zeolite
catalyst
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
Application number
AU10370/83A
Other languages
English (en)
Other versions
AU1037083A (en
Inventor
Waldeen C. Buss
Thomas R. Hughes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chevron USA Inc
Original Assignee
Chevron Research and Technology Co
Chevron Research Co
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
Priority claimed from US06/344,571 external-priority patent/US4447316A/en
Priority claimed from US06/392,907 external-priority patent/US4645588A/en
Priority claimed from US06/405,837 external-priority patent/US4634518A/en
Priority claimed from US06/420,541 external-priority patent/US4434311A/en
Application filed by Chevron Research and Technology Co, Chevron Research Co filed Critical Chevron Research and Technology Co
Publication of AU1037083A publication Critical patent/AU1037083A/en
Application granted granted Critical
Publication of AU559929B2 publication Critical patent/AU559929B2/en
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C10G35/00—Reforming naphtha
    • C10G35/04—Catalytic reforming
    • C10G35/06—Catalytic reforming characterised by the catalyst used
    • C10G35/095—Catalytic reforming characterised by the catalyst used containing 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
    • 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
    • B01J29/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789
    • 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
    • B01J29/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789
    • B01J29/605—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789 containing rare earth elements, titanium, zirconium, hafnium, zinc, cadmium, mercury, gallium, indium, thallium, tin or lead
    • 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
    • B01J29/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789
    • B01J29/61—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789 containing iron group metals, noble metals or copper
    • 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
    • B01J29/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789
    • B01J29/61—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L, as exemplified by patent document US3216789 containing iron group metals, noble metals or copper
    • B01J29/62—Noble metals
    • 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
    • C07C5/373—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen with simultaneous isomerisation
    • C07C5/387—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen with simultaneous isomerisation of cyclic compounds containing non six-membered ring to compounds containing a six-membered aromatic ring
    • 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
    • C07C5/373—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen with simultaneous isomerisation
    • C07C5/393—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen with simultaneous isomerisation with cyclisation to an aromatic six-membered ring, e.g. dehydrogenation of n-hexane to benzene
    • C07C5/41—Catalytic processes
    • C07C5/415—Catalytic processes with metals
    • C07C5/417—Catalytic processes with metals of the platinum group
    • 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
    • B01J2229/10—After treatment, characterised by the effect to be obtained
    • B01J2229/26—After treatment, characterised by the effect to be obtained to stabilize the total catalyst structure
    • 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
    • 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
    • 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
    • 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
    • C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
    • C07C2523/42—Platinum
    • 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
    • C07C2529/60—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L
    • C07C2529/61—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the type L containing iron group metals, noble metals or copper
    • C07C2529/62—Noble metals
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Catalysts (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
AU10370/83A 1982-02-01 1983-01-14 Zeolite catalyst Expired AU559929B2 (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
US34457082A 1982-02-01 1982-02-01
US344570 1982-02-01
US344571 1982-02-01
US06/344,571 US4447316A (en) 1982-02-01 1982-02-01 Composition and a method for its use in dehydrocyclization of alkanes
US06/392,907 US4645588A (en) 1982-02-01 1982-06-28 Reforming with a platinum-barium-zeolite of L family
US392907 1982-06-28
US405837 1982-08-06
US06/405,837 US4634518A (en) 1982-02-01 1982-08-06 Platinum-barium-type L zeolite
US06/420,541 US4434311A (en) 1982-02-01 1982-09-20 Conversion of alkycyclopentanes to aromatics
US420541 1982-09-20
US42279882A 1982-09-24 1982-09-24
US422798 1982-09-24

Publications (2)

Publication Number Publication Date
AU1037083A AU1037083A (en) 1983-08-11
AU559929B2 true AU559929B2 (en) 1987-03-26

Family

ID=27559792

Family Applications (1)

Application Number Title Priority Date Filing Date
AU10370/83A Expired AU559929B2 (en) 1982-02-01 1983-01-14 Zeolite catalyst

Country Status (16)

Country Link
AU (1) AU559929B2 (da)
BR (1) BR8300467A (da)
CH (1) CH658603A5 (da)
DE (2) DE3303120C2 (da)
DK (1) DK163571C (da)
FI (1) FI830345L (da)
FR (1) FR2520636B1 (da)
GB (1) GB2116450B (da)
IL (1) IL67727A (da)
MX (2) MX166695B (da)
NL (1) NL191730C (da)
NO (1) NO157768C (da)
NZ (1) NZ203006A (da)
SE (1) SE454089B (da)
TR (1) TR23020A (da)
YU (1) YU43649B (da)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648961A (en) * 1982-09-29 1987-03-10 Chevron Research Company Method of producing high aromatic yields through aromatics removal and recycle of remaining material
US4456527A (en) * 1982-10-20 1984-06-26 Chevron Research Company Hydrocarbon conversion process
US4595668A (en) * 1983-11-10 1986-06-17 Exxon Research And Engineering Co. Bound zeolite catalyst
CA1231699A (en) † 1983-11-10 1988-01-19 Samuel J. Tauster Zeolite catalyst and process for using said catalyst
US4595670A (en) * 1983-11-10 1986-06-17 Exxon Research And Engineering Co. Zeolite catalyst
US4595669A (en) * 1983-11-10 1986-06-17 Exxon Research And Engineering Co. Method of preparing an improved catalyst
US4925819A (en) * 1983-11-10 1990-05-15 Exxon Research & Engineering Company Method of regenerating a deactivated catalyst
US4552856A (en) * 1983-11-10 1985-11-12 Exxon Research And Engineering Co. Zeolite catalyst and preparation thereof
US4568656A (en) * 1984-12-07 1986-02-04 Exxon Research & Engineering Co. Process for loading platinum into Zeolite-L
NZ215987A (en) * 1985-05-14 1989-07-27 Mobil Oil Corp Manufacture of zeolite
US5242675A (en) * 1985-10-15 1993-09-07 Exxon Research & Engineering Company Zeolite L
US5486498A (en) * 1986-10-14 1996-01-23 Exxon Research & Engineering Company Zeolite L
US4868145A (en) * 1987-12-28 1989-09-19 Mobil Oil Corporation Dehydrogenation and dehydrocyclization catalyst
US4830729A (en) * 1987-12-28 1989-05-16 Mobil Oil Corporation Dewaxing over crystalline indium silicates containing groups VIII means
US4990710A (en) * 1988-06-24 1991-02-05 Mobil Oil Corporation Tin-containing microporous crystalline materials and their use as dehydrogenation, dehydrocyclization and reforming catalysts
US4849567A (en) * 1987-12-28 1989-07-18 Mobil Oil Corporation Catalytic dehydrogenation of hydrocarbons over indium-containing crystalline microporous materials
GB8801067D0 (en) * 1988-01-19 1988-02-17 Exxon Chemical Patents Inc Zeolite l preparation
US4888105A (en) * 1988-02-16 1989-12-19 Mobil Oil Corporation Process for the dehydrocyclization of acyclic hydrocarbons and catalyst composition therefor
DE68917627T2 (de) * 1988-03-31 1995-01-26 Exxon Chemical Patents Inc Verfahren zum Reformieren einer dimethylbutanfreien Kohlenwasserstofffraktion.
US5192728A (en) * 1988-06-24 1993-03-09 Mobil Oil Corporation Tin-colating microporous crystalline materials and their use as dehydrogenation, dehydrocyclization reforming catalysts
US5124497A (en) * 1989-10-11 1992-06-23 Mobil Oil Corporation Production of mono-substituted alkylaromatics from C8 +N-paraffins
US5122489A (en) * 1990-10-15 1992-06-16 Mobil Oil Corporation Non-acidic dehydrogenation catalyst of enhanced stability
US5147837A (en) * 1990-10-22 1992-09-15 Mobil Oil Corporation Titania containing dehydrogenation catalysts
US5103066A (en) * 1990-12-10 1992-04-07 Mobil Oil Corp. Dehydrogenation of alcohols over non-acidic metal-zeolite catalysts
WO1996040842A1 (en) * 1995-06-07 1996-12-19 Chevron Chemical Company Process for maximizing xylene production
US5879538A (en) * 1997-12-22 1999-03-09 Chevron Chemical Company Zeolite L catalyst in conventional furnace

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1545411A1 (de) * 1951-01-28 1970-01-08 Union Carbide Corp Verfahren zur katalytischen Umwandlung von Kohlenwasserstoffen
NL238183A (da) 1962-08-03
GB1058190A (en) * 1963-06-28 1967-02-08 Mobil Oil Corp Catalytic cracking of hydrocarbons
DE1270212B (de) * 1964-03-26 1968-06-12 Union Oil Co Verfahren zur Einstellung des Aromatengehalts bei Hydrocrackverfahren
US3397137A (en) * 1965-07-16 1968-08-13 Union Carbide Corp Hydrocarbon reforming process and catalyst compositions therefor
FR2323664A1 (fr) * 1975-09-10 1977-04-08 Erap Procede de deshydrocyclisation d'hydrocarbures aliphatiques

Also Published As

Publication number Publication date
FR2520636B1 (fr) 1988-05-13
YU18683A (en) 1986-02-28
DK163571B (da) 1992-03-16
SE454089B (sv) 1988-03-28
BR8300467A (pt) 1983-11-01
MX9206280A (es) 1994-04-29
GB2116450A (en) 1983-09-28
CH658603A5 (de) 1986-11-28
IL67727A0 (en) 1983-05-15
NZ203006A (en) 1985-08-16
TR23020A (tr) 1989-01-24
DE3303120A1 (de) 1983-09-01
DE3303120C2 (de) 1997-07-24
AU1037083A (en) 1983-08-11
YU43649B (en) 1989-10-31
DE3348504C2 (de) 2003-06-26
MX166695B (es) 1993-01-28
SE8300485L (sv) 1983-08-02
NL191730B (nl) 1996-01-02
NL191730C (nl) 1996-05-03
IL67727A (en) 1986-10-31
DK37283A (da) 1983-08-02
NO157768C (no) 1988-05-25
NO157768B (no) 1988-02-08
DK163571C (da) 1992-08-03
GB2116450B (en) 1985-06-05
NO830322L (no) 1983-08-02
NL8300356A (nl) 1983-09-01
FI830345A0 (fi) 1983-02-01
FR2520636A1 (fr) 1983-08-05
DK37283D0 (da) 1983-01-31
FI830345L (fi) 1983-08-02
SE8300485D0 (sv) 1983-01-31
GB8302287D0 (en) 1983-03-02

Similar Documents

Publication Publication Date Title
AU566807B2 (en) Zeolite catalyst
AU566588B2 (en) Zeolite catalyst
AU563412B2 (en) Improved zeolite l catalyst for reforming
AU559929B2 (en) Zeolite catalyst
GB8313252D0 (en) Zeolite
AU570279B2 (en) Regenerating zedite-l catalyst
AU564974B2 (en) Improved catalytic cracking
AU2763084A (en) Iron-silicon-carbon catalysts
AU544036B2 (en) Reactions involving zeolite catalysts
AU559280B2 (en) Organophosphorus - treated zeolite catalyst
AU2151183A (en) Low nitrogen zeolite
AU571023B2 (en) Zeolite zsm-45
AU575798B2 (en) Metal zeolite catalyst
AU544040B2 (en) Zeolite conversion
AU581484B2 (en) Shape-selective zeolite catalyst
AU8649882A (en) Fixed bed catalyst
GB8428262D0 (en) Zeolite catalyst
AU8842482A (en) Activating zeolite catalysts
AU573552B2 (en) Para-selctive alkylation catalyst
AU539468B2 (en) Olifin oligomerisabion catalyst
AU566767B2 (en) Zeolite zsm-45
AU8782082A (en) Boro-aluminosilicates having zeolite structure
AU8782182A (en) Boro-aluminosilicates having zeolite structure
AU2218083A (en) Catalysts
AU577793B2 (en) Iron-sodium silicate catalyst

Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired