WO1999017876B1 - Treatment to improve the durability of a hydrodechlorination catalyst and catalyst - Google Patents

Treatment to improve the durability of a hydrodechlorination catalyst and catalyst

Info

Publication number
WO1999017876B1
WO1999017876B1 PCT/EP1998/006348 EP9806348W WO9917876B1 WO 1999017876 B1 WO1999017876 B1 WO 1999017876B1 EP 9806348 W EP9806348 W EP 9806348W WO 9917876 B1 WO9917876 B1 WO 9917876B1
Authority
WO
WIPO (PCT)
Prior art keywords
pretreatment step
catalyst
water
hydrodechlorination
hydrogen
Prior art date
Application number
PCT/EP1998/006348
Other languages
French (fr)
Other versions
WO1999017876A1 (en
Inventor
Zongchao Zhang
Original Assignee
Akzo Nobel Nv
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 by Akzo Nobel Nv filed Critical Akzo Nobel Nv
Publication of WO1999017876A1 publication Critical patent/WO1999017876A1/en
Publication of WO1999017876B1 publication Critical patent/WO1999017876B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/23—Preparation of halogenated hydrocarbons by dehalogenation
    • 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • 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
    • B01J37/16—Reducing
    • B01J37/18—Reducing with gases containing free hydrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)

Abstract

The durability of a supported nobel metal hydrodechlorination catalyst can be improved by treating the supported catalyst, which comprises support and catalytic noble metal, with hydrogen, in the presence of water, at elevated temperature. The temperature of the treatment can be at least about 400 °C and the time of treatment can be at least one half hour. The amount of water that is used can range from about 0.1 to 99.9 molar % based on the total moles of water and hydrogen that are utilized.

Claims

AMENDED CLAIMS[received by the International Bureau on 31 March 1999 (31.03.99); original claims 1-10 replaced by amended claims 1-9 (2 pages)]
1. A hydrodechlorination process wherein a supported nobel metal hydrodechlorination catalyst is used, involving a pretreatment step of said catalyst to enhance its durability, which pretreatment step comprises treating the supported catalyst, which comprises support and catalytic noble metal, with hydrogen, in the presence of water, at elevated temperature.
2. A process as claimed in Claim 1 wherein the pretreatment step is conducted at a temperature of at least 400°C.
3. A process as claimed in Claim 1 or 2 wherein the temperature during said pretreatment step is at least about 400°C and the amount of water ranges from 0.1% to 99.9%, on a molar basis, based on the total amount of moles of hydrogen and water that are utilized.
4. A process according to Claim 3 wherein from 5 to 95 molar%, more preferably 10 to 90 molar%, of water is used in said pretreatment step, based on the total amount of moles of hydrogen and water.
5. A process as claimed in Claim 1 wherein an additional reducing gas is used in said pretreatment step.
6. A process as claimed in Claim 5 wherein the reducing gas is selected from the group consisting of hydrazine and primary and secondary amines.
7. A process as claimed in Claim 1 wherein an inert gas is also used in said pretreatment step.
8. A process as claimed in Claim 7 wherein the inert gas is selected from the group consisting of helium, argon, and nitrogen.
9. An improved hydrodechlorination catalyst formed by a pretreatment step of any one of Claims 1-8 for use in hydrodechlorination reactions.
PCT/EP1998/006348 1997-10-02 1998-10-01 Treatment to improve the durability of a hydrodechlorination catalyst and catalyst WO1999017876A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94294597A 1997-10-02 1997-10-02
US08/942,945 1997-10-02

Publications (2)

Publication Number Publication Date
WO1999017876A1 WO1999017876A1 (en) 1999-04-15
WO1999017876B1 true WO1999017876B1 (en) 1999-05-27

Family

ID=25478860

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/006348 WO1999017876A1 (en) 1997-10-02 1998-10-01 Treatment to improve the durability of a hydrodechlorination catalyst and catalyst

Country Status (1)

Country Link
WO (1) WO1999017876A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108291156A (en) * 2015-11-13 2018-07-17 Sabic环球技术有限责任公司 A kind of catalysis process of chloride content for reducing hydrocarbon charging stream

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491640A (en) * 1980-12-09 1985-01-01 Osaka Gas Company Limited Catalyst for combustion at low temperatures and process for producing same
US4780447A (en) * 1987-07-10 1988-10-25 W. R. Grace & Co.-Conn. Catalysts for controlling auto exhaust emissions including hydrocarbon, carbon monoxide, nitrogen oxides and hydrogen sulfide and method of making the catalysts
US4902849A (en) * 1989-02-06 1990-02-20 Phillips Petroleum Company Dehydrogenation process
DE4003939A1 (en) * 1990-02-09 1991-08-14 Degussa Noble metal alumina catalyst contg. oxide promoter for gas purificn. - doped with base metal for cold start property and resistance to lean gas
US5105032A (en) * 1990-10-04 1992-04-14 The Dow Chemical Company Vapor phase hydrogenation of carbon tetrachloride

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108291156A (en) * 2015-11-13 2018-07-17 Sabic环球技术有限责任公司 A kind of catalysis process of chloride content for reducing hydrocarbon charging stream

Also Published As

Publication number Publication date
WO1999017876A1 (en) 1999-04-15

Similar Documents

Publication Publication Date Title
ID29419A (en) PREPARATION PROCESSES OF CATALYSTS WITH FIXED CATALYTICAL PROPERTIES
GB2352194B (en) Process for producing hydrocarbons from a synthesis gas and catalysts therefor
AU2001260150A1 (en) Shell catalysts, method for producing the same, and the use thereof
WO2001012312A3 (en) Chemical reactor and method for catalytic gas phase reactions
AU7249998A (en) Four-way diesel exhaust catalyst and method of use
DE69523308D1 (en) POLYMERIZATION CATALYST SYSTEM, THEIR PRODUCTION AND USE
CA2058731A1 (en) Method for producing hydrogen peroxide
DK1098840T3 (en) Catalytic partial oxidation with two catalytically active metals
HUP9801094A2 (en) Process for producing azithromycin
AU6486286A (en) Supported metal catalysts and use thereof
IT1265166B1 (en) PROCEDURE FOR PURIFICATION OF INERT GASES
TW346411B (en) Catalysts for use in oxidation reactions and method of oxidation using the catalysts
UA99090C2 (en) Catalyst and method for conducting gas phase reaction with its use, use of alumina as a carrier of gas phase reaction
ATE162508T1 (en) GAS GENERATING MIXTURE
WO1999017876B1 (en) Treatment to improve the durability of a hydrodechlorination catalyst and catalyst
GB9315679D0 (en) Base metal catalyst,catalytic support and two-stage process for the purification of vehicle exhaust gases
AU7458500A (en) Reduction of n2o emissions
EP1591416A3 (en) Process for reducing concentration of carbon monoxide in hydrogen-containing gas and catalyst used therefor
KR970069121A (en) Dissolved Oxygen Removal Catalyst and Dissolved Oxygen Removal Method
MX9708799A (en) High temperature treatment of reforming catalyst with an inert gas.
DK1024897T3 (en) Process for catalytic chemical reaction
BG104723A (en) Method for producing hydroxylammonium salts
IT1286879B1 (en) 1,3-DIPHOSPHINEPROPANE BINDERS AND COMPLEXES FORMED THEM WITH TRANSITION METALS, THEIR PREPARATION AND USE
TW202426123A (en) Ammonia decomposition catalyst and exhaust gas treatment method
AU5286100A (en) Preparation of substituted aromatic amines

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP KR MX

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

AK Designated states

Kind code of ref document: B1

Designated state(s): CN JP KR MX

AL Designated countries for regional patents

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase in:

Ref country code: KR

122 Ep: pct application non-entry in european phase