CN107051463A - A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst - Google Patents
A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst Download PDFInfo
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- CN107051463A CN107051463A CN201710223469.5A CN201710223469A CN107051463A CN 107051463 A CN107051463 A CN 107051463A CN 201710223469 A CN201710223469 A CN 201710223469A CN 107051463 A CN107051463 A CN 107051463A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 61
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000002243 precursor Substances 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims description 19
- 238000001354 calcination Methods 0.000 claims description 16
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 6
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 6
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 51
- 238000000034 method Methods 0.000 abstract description 12
- 230000003197 catalytic effect Effects 0.000 abstract description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 9
- 238000006555 catalytic reaction Methods 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 25
- 229910052751 metal Inorganic materials 0.000 description 21
- 239000002184 metal Substances 0.000 description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 8
- 229910017052 cobalt Inorganic materials 0.000 description 7
- 239000010941 cobalt Substances 0.000 description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 7
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 229910003271 Ni-Fe Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 238000007084 catalytic combustion reaction Methods 0.000 description 3
- 230000009102 absorption Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical group [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- -1 ferric nitrate Compound Chemical class 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B01J23/75—Cobalt
-
- 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
- B01J23/755—Nickel
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/617—500-1000 m2/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/635—0.5-1.0 ml/g
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The invention belongs to environmental protection and catalyst technical field, and in particular to a kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst.It is made up of high-specific surface area ZIF 67 and metallic precursor；By being dried to high-specific surface area ZIF 67, to remove the moisture of absorption；Metallic precursor is mixed with ethanol again, stirring and dissolving, obtained solution；The solution of preparation and pretreated ZIF 67 stirring mixs, are stood, are dried, calcine, being cooled to normal temperature and can obtain burning for catalysis VOCs loaded catalyst.Catalyst of the present invention can reduce active component consumption, reduce cost, while being conducive to pollutant in the absorption of catalyst surface by being used as carrier from high-specific surface area ZIF 67.The catalysis oxidation ability to VOCs is improved, efficiently benzene homologues (toluene) in VOCs can be removed by low-temperature catalytic burning, and the catalyst cost is relatively low, and technique is simple, with good hydrothermal stability and sulfur resistance.
Description
Technical field
The invention belongs to environmental protection and catalysis technical field, and in particular to a kind of support type for being used to be catalyzed burning VOCs
The preparation method of catalyst.
Background technology
Volatile organic matter (VOCs) in the industries such as fine chemistry industry, petrochemical industry, pharmacy discharge waste gas is current atmospheric
The most typical pollution sources of environment, its species is extremely more, including：Benzene homologues, alkene, alcohols etc..VOCs gases are mostly poisonous, there is gas
Taste, some VOCs such as benzene homologues are even with strong carcinogenicity.Current national government and environmental protection department bring to it
Problem of environmental pollution pay much attention to, discharge standard on VOCs is constantly plus tight.Therefore, the benzene series of economical and efficient is sought
VOCs emission control techniques turn into one of the important topic in current environmental catalysis field.
Common VOCs control technologies have absorption, absorptions, condensation, membrane separation technique, direct burning, thermal oxide, urged at present
Change burning, biodegradation, ultraviolet catalytic oxidation method etc..Production by Catalytic Combustion Process is that the VOCs in waste gas is low in the presence of catalyst
Warm combustion decomposition is H2O and CO2Method, this method has operation temperature low, and auxiliary materials expense is low, and removal efficiency height etc. is excellent
Point, it is considered to be most one of control technology of prospect.The core of the technology is catalyst.The type of catalyst activity component,
The factors such as load capacity play a decisive role to catalyst activity.Simultaneously as catalyst combustion reaction mostly occurs in catalyst surface,
Therefore need active component being supported on to obtain big specific surface area on carrier, this can not only reduce the use of active component
Amount, and mechanical strength, heat endurance and catalytic activity can be improved.Therefore the selection of carrier is to the good and bad of catalyst performance
Play vital effect.
At present, noble metal catalyst and metal oxide catalyst can be substantially divided into by catalyst activity component.Your gold
Metal catalyst activity is high, selectivity is good, and initiation temperature can as little as 100~200 DEG C during catalysis burning VOCs, there is other in the reaction
The incomparable advantage of species catalyst.But it is due to that Precious Metals Resources are rare, expensive, handle chloride and sulfur-bearing
Poisoning is easy to during VOCs, thus it is difficult to large-scale promotion in commercial Application.Single metal oxide, which has catalyst, to be risen
Fire temperature high, the low problem of catalytic activity.And by being combined that two or more metal (Cu, Mn, Co etc.) is prepared
Metal oxide catalyst, its catalytic activity is reduced apparently higher than corresponding single metal oxide, its burning-point of catalysis burning,
The focus studied as current catalyst for catalytic combustion.ZIF-67 has the chemical stability that high porosity is become reconciled, due to energy
The structure and specific surface area of control hole are big, have wider in VOCs catalyst for catalytic combustion as carrier than other porous materials
General application prospect.
The content of the invention
It is an object of the present invention to overcome the deficiencies in the prior art there is provided one kind ensure high catalytic activity while, significantly
Reduce the preparation method for being used to be catalyzed burning VOCs loaded catalyst of the load capacity of active component.
In order to solve the above-mentioned technical problem, the technical scheme is that：
A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst, wherein：It is by high-specific surface area
ZIF-67 and metallic precursor are made；Specific preparation method comprises the following steps：
1) high-specific surface area ZIF-67 is dried 3~24 hours at a temperature of 80~200 DEG C, to remove high-specific surface area
The moisture adsorbed in ZIF-67；
2) metallic precursor is mixed with ethanol, stirring and dissolving, obtained solution；
3) quality and the step 1 of the metallic precursor of configuration solution) pretreated ZIF-67 mass ratio for 0.01~
0.1, the consumption of ethanol is step 1) pretreated ZIF-67 quality × specific pore volume；
4) by step 2) solution for preparing and step 1) pretreated ZIF-67 stirring mixing, after standing 3~24 hours,
It is placed in baking oven and is dried 4~6 hours at a temperature of 100~140 DEG C, is placed into Muffle furnace, in 250~350 DEG C of calcining
Temperature lower calcination 4~6 hours；
5) loaded catalyst for being catalyzed the VOCs that burns can be obtained by the material after calcining being cooled into normal temperature.
Specific surface area >=800m of the high-specific surface area ZIF-672/ g, specific pore volume >=0.6mL/g.
The metallic precursor is any one or a few mixing with arbitrary proportion in cobalt nitrate, nickel nitrate, ferric nitrate
Compound.
Specific implementation method
Embodiment 1
A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst in the present embodiment, wherein：It is by
Specific surface area is 928m2/ g, specific pore volume position 0.65mL/g high-specific surface area ZIF-67 and metallic precursor are made；It is specific to prepare
Method comprises the following steps：
1) it is 928m by specific surface area2Temperature of/g, specific pore volume position 0.65mL/g the high-specific surface area ZIF-67 at 80 DEG C
Under dry 3 hours, to remove the moisture adsorbed in high-specific surface area ZIF-67；
2) cobalt nitrate is mixed with ethanol, stirring and dissolving, obtained solution；
3) quality and the step 1 of the cobalt metal of configuration solution) pretreated ZIF-67 mass ratio is 0.01, ethanol
Consumption be step 1) pretreated ZIF-67 quality × specific pore volume；
4) by step 2) solution for preparing and step 1) pretreated ZIF-67 stirring mixing, after standing 3 hours, it is placed in
Dry 4 hours, place into Muffle furnace at a temperature of 100 DEG C in baking oven, calcined 4 hours under 250 DEG C of calcining heat；
5) loaded catalyst for being catalyzed the VOCs that burns can be obtained by the material after calcining being cooled into normal temperature.
The experimental result of catalyst burning toluene：
Catalyst activity is evaluated：1.0mL tablettings are loaded into fixed bed for the Co/ZIF-67 loaded catalysts of 20~60 mesh
In the crystal reaction tube of catalyst reaction device, reaction system tabletting is normal pressure, and air mass flow is 200mL/min, and air speed is
12000h-1, toluene concentration is 1000ppm, and temperature range is 100~300 DEG C, and gas chromatographic detection result is：Reaction temperature is
100th, 150,180,200,220,250,300 DEG C when toluene conversion be respectively 0.9%, 7.3%, 37.8%, 74.5%,
88.6%th, 99.4%, 100.0%.
Embodiment 2
A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst in the present embodiment, wherein：It is by
Specific surface area is 950m2/ g, specific pore volume position 0.75mL/g high-specific surface area ZIF-67 and metallic precursor are made；It is specific to prepare
Method comprises the following steps：
1) it is 950m by specific surface area2Temperature of/g, specific pore volume position 0.75mL/g the high-specific surface area ZIF-67 at 80 DEG C
Under dry 24 hours, to remove the moisture adsorbed in high-specific surface area ZIF-67；
2) cobalt nitrate, nickel nitrate, ferric nitrate and ethanol are mixed, stirring and dissolving, obtained solution；
3) the cobalt metal of configuration solution, nickel metal, the mass ratio of ferrous metal are 2:2:1, cobalt metal, nickel metal, ferrous metal
Gross mass and step 1) pretreated ZIF-67 mass ratio is 0.1, the consumption of ethanol is step 1) it is pretreated
ZIF-67 quality × specific pore volume；
4) by step 2) solution for preparing and step 1) pretreated ZIF-67 stirring mixing, after standing 24 hours, put
In being dried 6 hours at a temperature of 140 DEG C in baking oven, place into Muffle furnace, calcined 6 hours under 350 DEG C of calcining heat；
5) loaded catalyst for being catalyzed the VOCs that burns can be obtained by the material after calcining being cooled into normal temperature.
The experimental result of catalyst burning toluene：
Catalyst activity is evaluated：1.0mL tablettings are loaded for the Co-Ni-Fe/ZIF-67 loaded catalysts of 20~60 mesh
In the crystal reaction tube of fixed-bed catalytic reactor, reaction system tabletting is normal pressure, and air mass flow is 200mL/min, air speed
For 12000h-1, toluene concentration is 1000ppm, and temperature range is 100~300 DEG C, and gas chromatographic detection result is：Reaction temperature
For 100,150,180,200,220,250,300 DEG C when toluene conversion be respectively 0.8%, 15.8%, 59.8%, 94.5%,
100.0%th, 100.0%, 100.0%.
Catalyst stability is evaluated：The Co-Ni-Fe/ZIF-67 loaded catalysts of 1.0mL 20~60 mesh are loaded solid
In the crystal reaction tube of fixed bed catalyst reaction device, reaction system tabletting is normal pressure, and air mass flow is 200mL/min, and air speed is
12000h-1, toluene concentration is 1000ppm, and temperature range is 220 DEG C, uses gas chromatographic detection.
Embodiment 3
A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst in the present embodiment, wherein：It is by
Specific surface area is 950m2/ g, specific pore volume position 0.65mL/g high-specific surface area ZIF-67 and metallic precursor are made；It is specific to prepare
Method comprises the following steps：
1) it is 950m by specific surface area2Temperature of/g, specific pore volume position 0.65mL/g the high-specific surface area ZIF-67 at 140 DEG C
Under dry 14 hours, to remove the moisture adsorbed in high-specific surface area ZIF-67；
2) cobalt nitrate, nickel nitrate and ethanol are mixed, stirring and dissolving, obtained solution；
3) the cobalt metal of configuration solution, the mass ratio of nickel metal are 1:1, cobalt metal, the gross mass and step 1 of nickel metal)
Pretreated ZIF-67 mass ratio is 0.08, and the consumption of ethanol is step 1) pretreated ZIF-67 quality × compare hole
Hold；
4) by step 2) solution for preparing and step 1) pretreated ZIF-67 stirring mixing, after standing 14 hours, put
In being dried 5 hours at a temperature of 120 DEG C in baking oven, place into Muffle furnace, calcined 5 hours under 300 DEG C of calcining heat；
5) loaded catalyst for being catalyzed the VOCs that burns can be obtained by the material after calcining being cooled into normal temperature.
The experimental result of catalyst burning toluene：
Catalyst activity is evaluated：1.0mL tablettings are loaded for the Co-Ni-Fe/ZIF-67 loaded catalysts of 20~60 mesh
In the crystal reaction tube of fixed-bed catalytic reactor, reaction system tabletting is normal pressure, and air mass flow is 200mL/min, air speed
For 12000h-1, toluene concentration is 1000ppm, and temperature range is 100~300 DEG C, and gas chromatographic detection result is：Reaction temperature
For 100,150,180,200,220,250,300 DEG C when toluene conversion be respectively 0.9%, 10.7%, 50.8%, 91.5%,
99.4%th, 100.0%, 100.0%.
Embodiment 4
A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst in the present embodiment, wherein：It is by
Specific surface area is 960m2/ g, specific pore volume position 0.68mL/g high-specific surface area ZIF-67 and metallic precursor are made；It is specific to prepare
Method comprises the following steps：
1) it is 960m by specific surface area2Temperature of/g, specific pore volume position 0.68mL/g the high-specific surface area ZIF-67 at 180 DEG C
Under dry 20 hours, to remove the moisture adsorbed in high-specific surface area ZIF-67；
2) nickel nitrate, ferric nitrate and ethanol are mixed, stirring and dissolving, obtained solution；
3) the nickel metal of configuration solution, the mass ratio of ferrous metal are 2:1, nickel metal, the gross mass and step 1 of ferrous metal)
Pretreated ZIF-67 mass ratio is 0.045, and the consumption of ethanol is step 1) pretreated ZIF-67 quality × ratio
Pore volume；
4) by step 2) solution for preparing and step 1) pretreated ZIF-67 stirring mixing, after standing 20 hours, put
In being dried 4.5 hours at a temperature of 120 DEG C in baking oven, place into Muffle furnace, 5.5 are calcined under 340 DEG C of calcining heat
Hour；
5) loaded catalyst for being catalyzed the VOCs that burns can be obtained by the material after calcining being cooled into normal temperature.
The experimental result of catalyst burning toluene：
Catalyst activity is evaluated：1.0mL tablettings are loaded for the Co-Ni-Fe/ZIF-67 loaded catalysts of 20~60 mesh
In the crystal reaction tube of fixed-bed catalytic reactor, reaction system tabletting is normal pressure, and air mass flow is 200mL/min, air speed
For 12000h-1, toluene concentration is 1000ppm, and temperature range is 100~300 DEG C, and gas chromatographic detection result is：Reaction temperature
For 100,150,180,200,220,250,300 DEG C when toluene conversion be respectively 1.1%, 9.5%, 49.6%, 79.6%,
99.4%th, 100.0%, 100.0%.
Embodiment 5
A kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst in the present embodiment, wherein：It is by
Specific surface area is 930m2/ g, specific pore volume position 0.6mL/g high-specific surface area ZIF-67 and metallic precursor are made；It is specific to prepare
Method comprises the following steps：
1) it is 930m by specific surface area2Temperature of/g, specific pore volume position 0.6mL/g the high-specific surface area ZIF-67 at 180 DEG C
Under dry 18 hours, to remove the moisture adsorbed in high-specific surface area ZIF-67；
2) cobalt nitrate, ferric nitrate and ethanol are mixed, stirring and dissolving, obtained solution；
3) the cobalt metal of configuration solution, the mass ratio of ferrous metal are 3：2, cobalt metal, the gross mass and step 1 of ferrous metal)
Pretreated ZIF-67 mass ratio is 0.075, and the consumption of ethanol is step 1) pretreated ZIF-67 quality × ratio
Pore volume；
4) by step 2) solution for preparing and step 1) pretreated ZIF-67 stirring mixing, after standing 18 hours, put
In being dried 5 hours at a temperature of 130 DEG C in baking oven, place into Muffle furnace, 5.5 are calcined under 340 DEG C of calcining heat small
When；
5) loaded catalyst for being catalyzed the VOCs that burns can be obtained by the material after calcining being cooled into normal temperature.
The experimental result of catalyst burning toluene：
Catalyst activity is evaluated：1.0mL tablettings are loaded for the Co-Ni-Fe/ZIF-67 loaded catalysts of 20~60 mesh
In the crystal reaction tube of fixed-bed catalytic reactor, reaction system tabletting is normal pressure, and air mass flow is 200mL/min, air speed
For 12000h-1, toluene concentration is 1000ppm, and temperature range is 100~300 DEG C, and gas chromatographic detection result is：Reaction temperature
For 100,150,180,200,220,250,300 DEG C when toluene conversion be respectively 1.3%, 13.5%, 56.7%, 75.6%,
99.0%th, 100.0%, 100.0%.
Claims (3)
1. a kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst, it is characterised in that：It is by high-ratio surface
Product ZIF-67 and metallic precursor are made, and specific preparation method comprises the following steps：
1) high-specific surface area ZIF-67 is dried 3~24 hours at a temperature of 80~200 DEG C, to remove high-specific surface area ZIF-
The moisture adsorbed in 67；
2) metallic precursor is mixed with ethanol, stirring and dissolving, obtained solution；
3) quality and the step 1 of the metallic precursor of configuration solution) pretreated ZIF-67 mass ratio is 0.01~0.1,
The consumption of ethanol be step 1) pretreated ZIF-67 quality × specific pore volume；
4) by step 2) solution for preparing and step 1) pretreated ZIF-67 stirring mixing, after standing 3~24 hours, it is placed in
Dry 4~6 hours, place into Muffle furnace, in 250~350 DEG C of calcining heat at a temperature of 100~140 DEG C in baking oven
Lower calcining 4~6 hours；
5) loaded catalyst for being catalyzed the VOCs that burns can be obtained by the material after calcining being cooled into normal temperature.
2. a kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst according to claim 1, its feature
It is：Specific surface area >=800m of the high-specific surface area ZIF-672/ g, specific pore volume >=0.6mL/g.
3. a kind of preparation method for being used to be catalyzed burning VOCs loaded catalyst according to claim 1, its feature
It is：The metallic precursor be cobalt nitrate, nickel nitrate, ferric nitrate in any one or a few with the mixing of arbitrary proportion
Thing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108772067A (en) * | 2018-06-05 | 2018-11-09 | 天津大学 | The preparation method of the monoatomic ACF catalyst of the double transition metal of load of room temperature degradation VOCs |
| CN110586159A (en) * | 2019-09-10 | 2019-12-20 | 辽宁星空钠电电池有限公司 | Method for preparing full-hydrolysis catalyst with nickel monoatomic double-active-site |
| CN110586065A (en) * | 2019-09-20 | 2019-12-20 | 天津大学 | Synthesis method and application of novel metal oxide catalyst derived from metal organic framework |
| CN110961159A (en) * | 2019-12-31 | 2020-04-07 | 五邑大学 | Supported Fe-Co/ZIF-67 bimetallic catalyst and preparation method and application thereof |
| CN112371153A (en) * | 2020-11-03 | 2021-02-19 | 湖北大学 | Bimetallic CoNi-ZIF derived CoNi @ CN catalyst, preparation method and catalytic hydrogenation application thereof |
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| CN110586065A (en) * | 2019-09-20 | 2019-12-20 | 天津大学 | Synthesis method and application of novel metal oxide catalyst derived from metal organic framework |
| CN110961159A (en) * | 2019-12-31 | 2020-04-07 | 五邑大学 | Supported Fe-Co/ZIF-67 bimetallic catalyst and preparation method and application thereof |
| CN110961159B (en) * | 2019-12-31 | 2022-11-15 | 五邑大学 | Supported Fe-Co/ZIF-67 bimetallic catalyst and preparation method and application thereof |
| CN112371153A (en) * | 2020-11-03 | 2021-02-19 | 湖北大学 | Bimetallic CoNi-ZIF derived CoNi @ CN catalyst, preparation method and catalytic hydrogenation application thereof |
| CN112371153B (en) * | 2020-11-03 | 2022-06-03 | 湖北大学 | Bimetallic CoNi-ZIF derived CoNi @ CN catalyst, preparation method and catalytic hydrogenation application thereof |
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