CN1030709A - Low-temperature flameless combustion catalyst and method for making thereof - Google Patents

Low-temperature flameless combustion catalyst and method for making thereof Download PDF

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Publication number
CN1030709A
CN1030709A CN88104471A CN87105167A CN1030709A CN 1030709 A CN1030709 A CN 1030709A CN 88104471 A CN88104471 A CN 88104471A CN 87105167 A CN87105167 A CN 87105167A CN 1030709 A CN1030709 A CN 1030709A
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catalyst
carrier
soluble
metal
accounts
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CN1004401B (en
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阙振寰
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KUNMING NOBLE METAL INST CHINA NONFERROUS METAL INDUSTRY GENERAL Co
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KUNMING NOBLE METAL INST CHINA NONFERROUS METAL INDUSTRY GENERAL Co
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Priority to CN87105167.2A priority Critical patent/CN1004401B/en
Publication of CN1030709A publication Critical patent/CN1030709A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G67/00—Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing oxygen or oxygen and carbon, not provided for in groups C08G2/00 - C08G65/00
    • C08G67/02—Copolymers of carbon monoxide and aliphatic unsaturated 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
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/1608—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes the ligands containing silicon
    • 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
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/24—Phosphines, i.e. phosphorus bonded to only carbon atoms, or to both carbon and hydrogen atoms, including e.g. sp2-hybridised phosphorus compounds such as phosphabenzene, phosphole or anionic phospholide ligands
    • B01J31/2404—Cyclic ligands, including e.g. non-condensed polycyclic ligands, the phosphine-P atom being a ring member or a substituent on the ring
    • B01J31/2409—Cyclic ligands, including e.g. non-condensed polycyclic ligands, the phosphine-P atom being a ring member or a substituent on the ring with more than one complexing phosphine-P atom
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80—Complexes comprising metals of Group VIII as the central metal
    • B01J2531/82—Metals of the platinum group
    • B01J2531/824—Palladium
    • 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
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/22—Organic complexes
    • B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
    • B01J31/2208—Oxygen, e.g. acetylacetonates

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)

Abstract

It is first carrier with alumina silicate fibre that the present invention proposes a kind of, and activating oxide is second carrier, and containing noble metal and rare earth metal and alkaline earth oxide is novel low-temperature flameless combustion catalyst of co-catalyst and preparation method thereof.Catalyst of the present invention can be used for doing the abatement of pollution of light safe heat source and some industrial harmful gas.

Description

Low-temperature flameless combustion catalyst and method for making thereof
The invention belongs to a kind of Catalysts and its preparation method that comprises noble metal.
Low-temperature flameless combustion catalyst there is certain research abroad at present.As BP 894,612; 1,336,617; 2,019,240A; United States Patent (USP) 3,697,447; 3,802,856; 3,835,066; 3,867,311; 4,048,092; French Patent (FRP) 2,395,067; 2,539,327 etc.The catalyst that these patents are reported, its carrier are asbestos, glass fibre, alumina fibre, alumina silicate fibre etc. or their mixture.With the reactive metal that is combined as of Pt, Pd, Rh or they, also interpolation Co, the Ni or the rare earth oxide that have are deposited on the carrier it with the method for spraying or dipping.These catalyst respectively have its characteristics, and method for making and purposes also are not quite similar.
The objective of the invention is to propose a kind of, low cost of containing rare earth and base metal low as second carrier, noble metal dosage, high performance new type low temperature flameless burning catalyst with the activated metal oxide.
Content of the present invention is:
1. select for use a kind of refractory fibre as carrier, deposition or be coated with a kind of activated alumina as second carrier on this carrier enlarges the carrier specific area.The second carrier weight accounts for 3～10% of total catalyst weight.
2. select for use precious metals pt or Pd or the combination of the two as active metal component, the weight ratio of Pt and Pd is 0.25～1: 1.The content (wt%) of noble metal in catalyst is 0.07～0.15.
3. select rare earth oxide CeO for use 2Or La 2O 3And a kind of oxide of alkaline-earth metal, be preferably MgO as co-catalyst.Rare earth oxide content (wt%) in catalyst is 0.8～1.8, and alkaline earth oxide is 0.5～2.
4. manufacture craft may further comprise the steps:
(1) elder generation cleans refractory fibre and makes filter cake as first carrier, suck the soluble aluminum salting liquid again, do the back and handle, then 110 ℃ of following ageing dryings with weak aqua ammonia, heat up 400 ℃ again, activated alumina is deposited on becomes second carrier on the filter cake.
(2) on filter cake, add the nitrate or the acetate solution of cerium or lanthanum with dipping or the method that evenly splashes into, dry the back and soak, take out, heat up 500 ℃ and be decomposed into CeO with clear water washing, 110 ℃ of oven dry with ammoniacal liquor 2, or La 2O 3
(3) nitrate of adding alkaline-earth metal, preferably Mg (NO 3) 2Solution, air drying and stoving.
(4) add Pt or the soluble compound of Pd or the solution of the two combination, 110 ℃ of oven dry heat up 500 ℃, make its decomposition and obtain end product.
Refractory fibre among the present invention is the industrial goods alumina silicate fibre that Shandong Refractory Material Factory produces, and its chemical analysis is: Al 2O 346～56%, SiO 248～53%, Fe 2O 3≤ 1.2%, 1～4 micron of fibre diameter.
The soluble compound of said Pt, Pd is meant chlorine complex acid, ammino-complex, the chloride of Pt, Pd among the present invention; The nitrate of Pd.
Catalyst of the present invention can be used for propane, butane, methane/natural gas, the flameless catalytic combustion of liquefied petroleum gas, gasoline, benzene,toluene,xylene, except warming oneself as catalyst such as family light, safe heat source, open-air heating, the small transporting vehicle ship, chicken is incubated in small-sized workshop heating, paint dryings etc. also can be used for the abatement of pollution of the harmful steam benzene,toluene,xylene of industry.
Embodiment:
1. alumina silicate fibre 15g cleans, and stirs pulp, pours in the square Buchner funnel, and vacuum filtration is made the sheet filter cake, does back thickness and is about 1.5mm, and length and width respectively are 21.8cm, heavy 14.5g.Filter cake is sucked 150ml 5% Al (NO 3) 39H 2O solution dries the back 110 ℃ of dryings 3 hours, and the dried fibres sheet is put into 1: 1 NH 4Heat is taken out and is embathed three times with hot water to 90 ℃ and kept 5 minutes among the OH, dries the back 110 ℃ of bakings 2 hours, is placed in the Muffle furnace 160 ℃ of insulations 30 minutes down, is warming up to 400 ℃ of insulations 3 hours then.Through the fiber carrier 85-IA of this processing specific area is 16m 2/ g, (specific area is 0.32M than undressed carrier 2/ g) improve about 50 times.
Evenly dripping 116Ml concentration is 0.4725g Ce (NO 3) 6H 2The solution of O/100ml dries the back 110 ℃ of oven dry 3 hours in 85-IA fiber carrier, cold back was at 1: 1 NH 4Heat is taken out with the clear water washing to 90 ℃ and soaked 3～5 minutes among the OH, dries the back 110 ℃ of oven dry 3 hours, is warming up to 250 ℃ and keep/hours, is warming up to 500 ℃ of calcination 3 hours again, obtains containing CeO 2Sample 85-IAC.
Evenly dripping 116ml concentration again is 1.65g Mg (NO 3) 26H 2The solution of O/100ml dries the back 110 ℃ of oven dry 3 hours, and continuing evenly to drip concentration is the Pd (NO of 12.5mg Pd/100ml 3) 2Solution 116ml dries the back 110 ℃ of oven dry 2 hours, be warming up to 250 ℃ then also to keep/hour, be warming up to 500 ℃ of calcinings 2 hours, obtain final catalyst prod 85-IACMP.
2. a slice is added Mg (NO 3) 2Fiber evenly drip the mixed solution 197ml of Pt and Pd (concentration be the Pd (NO of 12.5mg Pd/100ml 3) 2Solution 81ml adds that concentration is the H of 3.75mg Pt/100ml 2PtCl 6Solution 116ml).Dry the back 110 ℃ the oven dry 2 hours, heat up then 250 ℃ keep/hour, heat up again 500 ℃ and calcined 2 hours, obtain catalyst prod 85-IACMPP.
A slice through as embodiment/in add Al (NO 3) 2Fiber carrier 85-IA after the solution-treated goes up and evenly drips concentration is 0.375g La (NO 3) 36H 2The solution 116ml of O/100ml dries back 110 ℃ of oven dry 3 hours, cold back with 1: 1 NH 4Heat is to 90 ℃ and kept 3～5 minutes among the OH, taking-up is washed three times with clear water, dry the back 110 ℃ of oven dry 3 hours, be warming up to 250 ℃ also to keep/hour, be warming up to 500 ℃ of calcinings 3 hours again, again with embodiment/in method carry MgO and Pd in the above, obtain catalyst prod 85-IALMP.
4. at the La (NO that pressed dropping that embodiment 3 handles 3) 3Dripping concentration on the 85-IAL fibre plate of solution is 1.65g Mg (NO 3) 26H 2The solution 116ml of O/ 100ml, air drying and stoving 3 hours, drip the mixed solution 197ml (identical) of Pd and Pt with embodiment 2, air drying and stoving, be warming up to 250 ℃ of maintenances/hour, be warming up to 500 ℃ of calcinings 2 hours, obtain catalyst prod 85-IALMPP.
Catalyst composition such as Table I among four embodiment.
Table I, catalyst component
The catalyst numbering Component content (wt%)
?Al 2O 3 ??CeO 2 ????La 2O 3 ??MgO ??Pt ????Pd
85-IACMP ?6.35 ??1.37 ????0 ??1.87 ??0.09 ????0
85-IACMPP ?6.35 ??1.37 ????0 ??1.87 ??0.063 ????0.027
85-IALMP ?6.38 ??0 ????1.03 ??1.88 ??0.091 ????0
85-IALMPP ?6.38 ??0 ????1.03 ??1.88 ??0.063 ????0.028
With a kind of easy low temperature flameless burner as shown in drawings handwarmer check the practical function of catalyst of the present invention.With catalyst in the Table I and 85-IACM, 85-IALM is washed into the little garden sheet of =30mm respectively.Above being placed on 85-IACMP or 85-IACMPP, below being placed on 85-IACM (as shown in drawings), or above being placed on 85-IALMP or 85-IALMPP, below 85-IALM is placed on.Use gasoline for the fuel, drip several ethanol on burning bed, light (85-IACMP with match, 85-IACMPP need not drip alcohol, with the match point several seconds to 30 second is flammable), behind the alcohol burning-out, catalyst promptly reaches uniform temperature, and gasoline vapor reacts and burns contacting with air at the interface.Testing result is as follows:
(1) the catalyst initiation temperature is low, easily lights.
(2) the bed surface glow of when burning is even, and flames of anger flame is not smelt tart flavour or other penetrating odor.
(3) through measuring, in the use in the catalytic bed bed temperature be 320～395 ℃, average 350 ℃; 370～400 ℃ of bedside temperature, average 390 ℃; 97～104 ℃ of exhaust outlet temperature, average 102 ℃; Casing temperature is 60～63 ℃, average 62 ℃.
(4) catalyst life is listed in Table II.
Table II, catalyst life
Heat (batch) number Catalyst Fuel oil Burning time Remarks
Kind Quantity (ml) (hour)
1 # 85-IACMPP Direct steaming gasoline 70 #Leaded gasoline 420.5 952.5 106 315.5 Functional life-span＞421.5 hour
2 # 85-IACMP Direct steaming gasoline 70 #Leaded gasoline 404 1098 106 447 Still good life-span＞553 of performance hour
3 # 85-IACMP Direct steaming gasoline 70 #Leaded gasoline direct steaming gasoline 372 148 9040 105 30.5 4892.5 Still good life-span＞5000 of performance hour
For activity of such catalysts quantitatively is described, 0.4g 85-IACMP catalyst is filled in the reactor that internal diameter 0.4cm hard glass-tube makes, keeping catalytic bed length is 17cm, put it in the tube furnace of controllable temperature, furnace temperature is risen to 203 ℃, and insulation makes catalyst temperature reach balance.With the butane is fuel, presses C 4H 10: O 2The ratio of=1: 9 (V/V) is injected the gaseous mixture of 10 μ l.With the butane that the chromatograph monitoring is discharged after the catalytic bed oxidation, getting conversion ratio by the data computation that writes down is 62%.Be warming up to 283 ℃ again, 303 ℃, 323 ℃, the conversion ratio that calculates butane respectively is 77.8%, 97.0%, 100%.Explanation is under 323 ℃ of experiment conditions, and butane can all burn and generate CO 2And H 2O.On chromatograph, do not detect the compound of CO or other partial oxidations yet.Description of drawings
1. metal upper casing
2. metal lower shell
3. detachable combustion head
4. 85-IACMP catalyst (burning bed)
5.?85-IACM
6. copper mesh
7. cotton (gasoline soaks into)
8. heat outlet
9. air intake

Claims (7)

1. a carrier is an alumina silicate fibre, includes the low-temperature flameless combustion catalyst of noble metal and rare-earth oxide, it is characterized in that its component and content are:
(1) aluminosilicate refractory fiber carrier.
(2) activated alumina is second carrier, accounts for catalyst weight 3～10%.
(3) reactive metal comprises a kind of noble metal among Pt, the Pd at least, accounts for catalyst weight 0.07～0.15%.
(4) oxide of rare earth metal Ce or La accounts for catalyst weight 0.8～1.8%.
(5) alkaline earth oxide accounts for catalyst weight 0.5～2%.
2. require 1 said catalyst according to the power agent, it is characterized in that said alumina silicate fibre carrier is the industrial goods that Shandong Refractory Material Factory produces, its composition is: Al 2O 346～56%, SiO 248～53%, Fe 2O 3≤ 1.2%.
3. according to the said catalyst of claim 1, it is characterized in that said reactive metal is Pt or Pd or the combination of the two.The weight ratio of Pt, Pd combined activity metal is Pt: Pd=0.25～1: 1.
4. according to the said catalyst of claim 1, it is characterized in that said alkaline earth oxide is preferably MgO.
5. according to claim 1,2,3,4 said Preparation of catalysts methods, it is characterized in that method may further comprise the steps:
(1) cleans alumina silicate fibre, make filter cake.
(2) the soluble aluminum salting liquid is evenly dripped or is dipped on the filter cake, dry back WITH AMMONIA TREATMENT, 110 ℃ of oven dry are also after the ageing, 400 ℃ of calcinings.
(3) soluble salt solution with Ce or La drips or is dipped in the carrier, after doing, uses WITH AMMONIA TREATMENT, after 110 ℃ of dryings, is warming up to 500 ℃ of calcinings.
(4) add the alkaline-earth metal soluble salt solution, add the solution of the soluble compound that contains Pt or Pd or the two combination again, 110 ℃ dry down, 500 ℃ of calcinings down.
6. according to the said Preparation of catalysts method of claim 5, it is characterized in that:
(1) said aluminum soluble salt is Al (NO 3) 39H 2O.
(2) soluble-salt of said Ce, La is acetate or nitrate.
(3) said alkaline-earth metal soluble-salt is preferably Mg (NO 3) 26H 2O.
7. according to the said Preparation of catalysts method of claim 5, the soluble compound that it is characterized in that the said Pt of containing, Pd is chlorine complex acid, ammino-complex, the chloride of Pt, Pd, the nitrate of Pd.
CN87105167.2A 1987-07-23 1987-07-23 Low-temp. flameless combustion catalyst and its preparation Expired CN1004401B (en)

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CN87105167.2A CN1004401B (en) 1987-07-23 1987-07-23 Low-temp. flameless combustion catalyst and its preparation

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CN1004401B CN1004401B (en) 1989-06-07

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009283A1 (en) * 2009-07-23 2011-01-27 中国科学院大连化学物理研究所 Catalyst for deoxidation of coalbed gas, preparation method and use thereof
CN101632928B (en) * 2009-08-14 2014-10-01 昆明理工大学 Flame combustion synthetic method for primary preparation of NSR catalysts
CN105823819A (en) * 2015-01-27 2016-08-03 中山大学 Method and apparatus for dissociating a sample and performing mass spectrometry using the same
CN107469832A (en) * 2017-07-24 2017-12-15 朱友富 One kind is used for chlorinated organics waste gas catalytic combustion catalyst and preparation method thereof
CN115845845A (en) * 2022-11-21 2023-03-28 北京沐秀新能源科技有限公司 Catalyst for flameless combustion of low-quality oilfield associated gas and preparation method and application thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009283A1 (en) * 2009-07-23 2011-01-27 中国科学院大连化学物理研究所 Catalyst for deoxidation of coalbed gas, preparation method and use thereof
CN101632928B (en) * 2009-08-14 2014-10-01 昆明理工大学 Flame combustion synthetic method for primary preparation of NSR catalysts
CN105823819A (en) * 2015-01-27 2016-08-03 中山大学 Method and apparatus for dissociating a sample and performing mass spectrometry using the same
TWI576892B (en) * 2015-01-27 2017-04-01 國立中山大學 A method and apparatus for ionization of analytes via combustion and the mass spectrometry thereof.
CN105823819B (en) * 2015-01-27 2019-06-21 中山大学 Method and apparatus for dissociating a sample and performing mass spectrometry using the same
CN107469832A (en) * 2017-07-24 2017-12-15 朱友富 One kind is used for chlorinated organics waste gas catalytic combustion catalyst and preparation method thereof
CN107469832B (en) * 2017-07-24 2019-02-05 广东本立环保技术有限公司 One kind is for chlorinated organics waste gas catalytic combustion catalyst and preparation method thereof
CN115845845A (en) * 2022-11-21 2023-03-28 北京沐秀新能源科技有限公司 Catalyst for flameless combustion of low-quality oilfield associated gas and preparation method and application thereof

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