CN108816232A - A kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed - Google Patents

A kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed Download PDF

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Publication number
CN108816232A
CN108816232A CN201810676684.5A CN201810676684A CN108816232A CN 108816232 A CN108816232 A CN 108816232A CN 201810676684 A CN201810676684 A CN 201810676684A CN 108816232 A CN108816232 A CN 108816232A
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catalyst
fluorine
catalytically decomposed
containing alkane
transition metal
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徐志雄
童绍丰
丛鑫鑫
张伟
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Jiangsu Sanmei Chemicals Co Ltd
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Jiangsu Sanmei Chemicals Co Ltd
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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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/745—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8659—Removing halogens or halogen compounds
    • B01D53/8662—Organic halogen compounds
    • 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
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation
    • 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
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/03—Precipitation; Co-precipitation
    • 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
    • B01J37/08—Heat treatment
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]

Abstract

The invention discloses a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed, catalyst precarsor is prepared by coprecipitation first, catalyst precarsor is impregnated with the transition metal salt with catalysed promoted effect again, carrying out roasting after dipping again can be prepared by.It is an advantage of the invention that：Catalyst used in hydrofluorocarbon/perfluoroparaffin catalytic decomposition of a kind of high mesoporosity, high stability and high activity has been prepared；Preparation process is simple, quick and raw materials used from a wealth of sources in preparation process, moderate, can be mass-produced.

Description

A kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed
Technical field
The present invention relates to field of catalyst preparation, and in particular to a kind of catalyst preparation side that fluorine-containing alkane is catalytically decomposed Method.
Background technique
Hydrofluorocarbon is widely used in refrigeration, foaming, cleaning, fire-fighting, aerosol as the substitute of fluorochlorohydrocarbon and hydrogen fluorochlorohydrocarbon The industries such as agent, ozone layer destroying potential value（ODP value）It is 0, but has higher chamber effect potential value（GWP）, while in life During producing these hydrogen fluorohydrocarbon class refrigerants, the by-product of other hydrofluorocarbon or perfluoroparaffin class can be also generated.Greenhouse gases Discharge cause global warming rising be undisputable fact, therefore how to eliminate industrial process discharge hydrofluorocarbon/perfluoroparaffin Exhaust gas is a meaningful thing.
Catalytic decomposition is elimination hydrofluorocarbon/perfluoroparaffin exhaust gas effective ways, but since the bond energy of C-F key is higher, Decomposition temperature is higher, also correspondinglys increase to the stability requirement of catalyst, and hydrofluorocarbon/perfluoroparaffin decomposition product HF have it is extremely strong Corrosivity and reactivity, be the key factor that must be taken into consideration when preparing catalyst.
Patent CN1049295A discloses the side that the harmless substance of stratospheric ozone layer in pairs is catalytically decomposed in chlorofluoro-alkane Method uses the catalyst comprising aluminium oxide or alumina silica composite oxides in this method, although this catalyst energy Enough effective decomposition chlorofluoro-alkanes, but it is lower for hydrofluorocarbon/perfluoroparaffin decomposition efficiency.
Patent US 7435394B2 discloses a kind of transition metal modified catalyst that perfluoroparaffin decomposes, which can It is effective to decompose hydrofluorocarbon/perfluor appropriate hydrocarbon gas, but its stability is poor, the service life is shorter.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed, The deficiency in background technique is overcome completely.
The technical solution adopted by the present invention is that：
A kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed, is prepared catalyst precarsor by coprecipitation first, Catalyst precarsor is impregnated with the transition metal salt with catalysed promoted effect again, carrying out roasting after dipping again can make ?.
Further, include the following steps：
A, the preparation of solution：The compound of the compound of active component aluminium and stabilizer is configured to solution by a certain percentage；
B, the evaporation of solution：Ammonia precipitation process agent is added into solution made from step a, by pH value control between 7-9, and continues Aging 9-11min, filtering are stirred, and is washed with deionized to neutrality, sediment is then added to a certain amount of Organic Alcohol In, it is stirred at room temperature 10-20 minutes, is evaporated in the environment of 60-80 DEG C；
C, the preparation of catalyst precarsor：The sediment obtained after being evaporated in step b, in inert gas environment, in 150-350 It is roasted at a temperature of DEG C, catalyst precarsor is prepared；
D, the preparation of catalyst：By the salt solution impregnation of catalyst precarsor transition metal promoter obtained in step c, Catalyst is obtained after roasting at 600-800 DEG C.
Further, the stabilizer in the step a is selected from one of iron, zinc, nickel and cobalt or a variety of.
Further, the molar ratio of the active component aluminium in the step a and stabilizing agent dosage is：1:0.1-0.5, preferably It is 1:0.2-0.3.
Further, the Organic Alcohol in the step b is selected from methanol, ethyl alcohol and ethylene glycol.
Further, the transition metal promoter in the step d is selected from one of zirconium, indium, titanium and tungsten or a variety of.
Further, the concentration of the salting liquid of the transition metal promoter in the step d is 0.5-2.5mol/L.
Further, the load capacity of transition metal promoter is 2-8% in the catalyst obtained after roasting in the step d.
The beneficial effects of the invention are as follows：1, be prepared the hydrofluorocarbon of high mesoporosity, high stability and high activity a kind of/ Catalyst used in perfluoroparaffin catalytic decomposition；2, preparation process is simple, quick, and raw materials used equal source is wide in preparation process It is general, it is moderate, it can be mass-produced.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the examples below, the embodiment For explaining only the invention, it does not restrict the protection scope of the present invention.
A kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed, before catalyst is prepared by coprecipitation first Body, then catalyst precarsor is impregnated with the transition metal salt with catalysed promoted effect, it is roasted again after dipping It is made, concrete operation step is as follows：
Embodiment 1
Al and Fe is according to molar ratio 1:0.1, by AlCl3And FeCl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 1.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 5% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 2
Al and Fe is according to molar ratio 1:0.2, by AlCl3And FeCl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 1.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 5% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 3
Al and Fe is according to molar ratio 1:0.3, by AlCl3With Fe Cl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 1.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 5% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment respectively to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five Hydrofluorocarbon/the perfluoroparaffin such as fluoroethane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen point Pressure ratio is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 4
Al and Fe is according to molar ratio 1:0.5, by AlCl3With Fe Cl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 1.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 5% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 5
Al and Fe is according to molar ratio 1:0.1, by AlCl3And FeCl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 0.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 2% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment respectively to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five Hydrofluorocarbon/the perfluoroparaffin such as fluoroethane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen point Pressure ratio is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 6
Al and Fe is according to molar ratio 1:0.2, by AlCl3And FeCl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 0.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 2% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 7
Al and Fe is according to molar ratio 1:0.3, by AlCl3With Fe Cl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 0.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 2% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment respectively to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five Hydrofluorocarbon/the perfluoroparaffin such as fluoroethane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen point Pressure ratio is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 8
Al and Fe is according to molar ratio 1:0.5, by AlCl3With Fe Cl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 0.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 2% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 9
Al and Fe is according to molar ratio 1:0.1, by AlCl3And FeCl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 2.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 8% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 10
Al and Fe is according to molar ratio 1:0.2, by AlCl3And FeCl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 2.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 8% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 11
Al and Fe is according to molar ratio 1:0.3, by AlCl3With Fe Cl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 2.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 8% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five fluorine second Hydrofluorocarbon/the perfluoroparaffin such as alkane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen intrinsic standoff ratio It is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Embodiment 12
Al and Fe is according to molar ratio 1:0.5, by AlCl3With Fe Cl3It is configured to solution.Using ammonium hydroxide as precipitating reagent to having precipitated Entirely, it filters, and is washed with deionized to neutrality；Then sediment is added in a certain amount of ethyl alcohol, is stirred at room temperature It 20 minutes, is evaporated in the environment of 70 DEG C；Sediment after evaporation is roasted at a temperature of 350 DEG C in inert gas environment It burns, product of roasting is impregnated with the nitrate solution of transition metal promoter Zr（The concentration 2.5mol/L of salting liquid）, make at 700 DEG C Obtain catalyst.The load capacity of Zr is 8% in catalyst（Mass ratio）.
By catalyst obtained in above-described embodiment respectively to fluoroform（It is also possible to tetrafluoromethane, tetrafluoroethane, five Hydrofluorocarbon/the perfluoroparaffin such as fluoroethane, trifluoroethane）Carry out catalytic decomposition experiment, process control CHF3, vapor, nitrogen point Pressure ratio is 1:9:10, pressure 1atm, air speed 1000h-1.Decomposition product is after scale is washed, with GC detection gas component.
Gas component testing result in above-described embodiment 1-12 is as shown in the table：

Claims (8)

1. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed, which is characterized in that be prepared into first by coprecipitation Catalyst precarsor is impregnated to catalyst precarsor, then with the transition metal salt of catalysed promoted effect, after dipping again into Row roasting can be prepared by.
2. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed according to claim 1, which is characterized in that including Following steps：
A, the preparation of solution：The compound of the compound of active component aluminium and stabilizer is configured to solution by a certain percentage；
B, the evaporation of solution：Ammonia precipitation process agent is added into solution made from step a, by pH value control between 7-9, and continues Aging 9-11min, filtering are stirred, and is washed with deionized to neutrality, sediment is then added to a certain amount of Organic Alcohol In, it is stirred at room temperature 10-20 minutes, is evaporated in the environment of 60-80 DEG C；
C, the preparation of catalyst precarsor：The sediment obtained after being evaporated in step b, in inert gas environment, in 150-350 It is roasted at a temperature of DEG C, catalyst precarsor is prepared；
D, the preparation of catalyst：By the salt solution impregnation of catalyst precarsor transition metal promoter obtained in step c, Catalyst is obtained after roasting at 600-800 DEG C.
3. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed according to claim 2, which is characterized in that described Stabilizer in step a is selected from one of iron, zinc, nickel and cobalt or a variety of.
4. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed according to claim 2, which is characterized in that described The molar ratio of active component aluminium in step a and stabilizing agent dosage is：1:0.1-0.5, preferably 1:0.2-0.3.
5. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed according to claim 2, which is characterized in that described Organic Alcohol in step b is selected from methanol, ethyl alcohol and ethylene glycol.
6. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed according to claim 2, which is characterized in that described Transition metal promoter in step d is selected from one of zirconium, indium, titanium and tungsten or a variety of.
7. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed according to claim 2, which is characterized in that described The concentration of the salting liquid of transition metal promoter in step d is 0.5-2.5mol/L.
8. a kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed according to claim 2, which is characterized in that described The load capacity of transition metal promoter is 2-8% in the catalyst obtained after roasting in step d.
CN201810676684.5A 2018-06-27 2018-06-27 A kind of method for preparing catalyst that fluorine-containing alkane is catalytically decomposed Pending CN108816232A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6069291A (en) * 1996-06-12 2000-05-30 Guild Associates, Inc. Catalytic process for the decomposition of perfluoroalkanes
US20010001652A1 (en) * 1997-01-14 2001-05-24 Shuichi Kanno Process for treating flourine compound-containing gas
US20090022642A1 (en) * 2002-08-28 2009-01-22 Shuichi Kanno Treatment method for decomposing perfluorocompound, decomposing catalyst and treatment apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6069291A (en) * 1996-06-12 2000-05-30 Guild Associates, Inc. Catalytic process for the decomposition of perfluoroalkanes
US20010001652A1 (en) * 1997-01-14 2001-05-24 Shuichi Kanno Process for treating flourine compound-containing gas
US20090022642A1 (en) * 2002-08-28 2009-01-22 Shuichi Kanno Treatment method for decomposing perfluorocompound, decomposing catalyst and treatment apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张淑娇: "制备方法对Fe2O3 /Al2O3-ZrO2在乙苯脱氢反应中催化性能的影响", 《燃料化学学报》 *
蒋阳 等: "《粉体工程》", 31 December 2005, 合肥工业大学出版社 *

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Application publication date: 20181116