CN111822042B - Composite metal catalyst for online hydrocarbon removal instrument and preparation method thereof - Google Patents
Composite metal catalyst for online hydrocarbon removal instrument and preparation method thereof Download PDFInfo
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- 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
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/74—Noble metals
- B01J29/7476—MWW-type, e.g. MCM-22, ERB-1, ITQ-1, PSH-3 or SSZ-25
Abstract
The invention provides a composite metal catalyst for an online hydrocarbon removal instrument and a preparation method thereof, which are used for solving the technical problem of low catalytic efficiency of hydrocarbon substances of the online hydrocarbon removal instrument in the prior art, and comprise the following steps: s1: dissolving a template, pd (NO 3) 2.6H 2O and RuCl3.3H2O in a first solvent, and adding an alkaline solution to obtain a mixture; heating and separating to obtain a first solid; s2: adding the first solid, CTMAB, TEOS and a second solvent into a container, adding a precipitator to react, separating to obtain a second solid, and calcining the second solid to obtain PdxRuy/SiO2 nano-particles; s3: and (2) processing the PdxRuy/SiO2 nano-particles, MCM-22 and water into molecular sieve water slurry, covering the surface of the carrier with the molecular sieve water slurry, drying and calcining to obtain the composite metal catalyst. The technical scheme of the invention is implemented by taking noble metals Pd and Ru as active components and SiO 2 And MCM-22 molecular sieve are evenly mixed, and finally the mixture is evenly coated on the surface of a zeolite carrier to prepare Pd x Ru y /SiO 2 the/MCM-22/Zeolite composite metal catalyst effectively improves the catalytic decomposition efficiency of the on-line hydrocarbon removal instrument.
Description
Technical Field
The invention relates to the field of catalysts and hydrocarbon catalysts, in particular to a composite metal catalyst for an online hydrocarbon removal instrument and a preparation method thereof.
Background
The online hydrocarbon removing instrument can monitor and remove hydrocarbon substances in real time, and is commonly used in chemical plants, oil refineries and other environments which are easy to leak VOCs. In the prior art, the common method for eliminating hydrocarbon substances is to carry out heating catalytic decomposition on the hydrocarbon substances, but the catalytic efficiency of the catalyst is low. Therefore, whether a high-efficiency catalyst suitable for an online hydrocarbon remover exists or not is a technical problem expected to be solved by the technical personnel in the field.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a composite metal catalyst for an online hydrocarbon removal instrument and a preparation method thereof, and the technical scheme of the invention is implemented as follows:
a preparation method of a composite metal catalyst for an online hydrocarbon removal instrument comprises the following steps:
s1: dissolving a template, pd (NO 3) 2.6H 2O and RuCl3.3H2O in a first solvent, and adding an alkaline solution to obtain a mixture; then heating and separating the mixture to obtain a first solid;
s2: adding the first solid, the CTMAB, the TEOS and a second solvent into a container, adding a precipitator for reaction, then separating to obtain a second solid, and calcining the second solid to obtain PdxRuy/SiO2 nano-particles;
s3: and (2) processing the PdxRuy/SiO2 nano-particles, MCM-22 and water into molecular sieve water slurry, covering the surface of the carrier with the molecular sieve water slurry, drying and calcining to obtain the composite metal catalyst.
Preferably, the mole ratio of Pd and Ru in S1 is 0.5-2.
Preferably, in S1 and S2, the molar ratio of TEOS to Pd is 0.5-4, and the molar ratio of CTMAB to Pd is 0.5-4.
Preferably, the heating method in S1 is: heating with microwave oven for 30-60S.
Preferably, the separation method in S1 is: the mixture was cooled to room temperature and washed with water and dried at 45-75 ℃ to give a solid one.
Preferably, in S2, the calcination method is: calcining for 1-5 hours in a muffle furnace at 500-600 ℃.
Preferably, in S3, the drying method is: drying in a vacuum drying oven at 60-100 deg.C for 3-6 hr;
in S3, the calcining method comprises the following steps: calcining for 2-8 hours in a muffle furnace at 400-700 ℃.
Preferably, in S1, the precipitant comprises ammonia or urea.
Preferably, in S1, the alkaline solution includes n-butylamine, dimethylglyoxime, or ethylenediamine.
The invention also aims to provide a composite metal catalyst for an online hydrocarbon removing instrument, and a preparation method of the composite metal catalyst for the online hydrocarbon removing instrument has the characteristics.
By implementing the technical scheme of the invention, the technical problem of low hydrocarbon removal efficiency of the online hydrocarbon removal instrument in the prior art can be solved; the technical scheme of the invention is implemented by taking noble metals Pd and Ru as active components and SiO 2 And MCM-22 molecular sieve are evenly mixed, and finally the mixture is evenly coated on the surface of a zeolite carrier to prepare Pd x Ru y /SiO 2 the/MCM-22/Zeolite composite metal catalyst effectively improves the catalytic decomposition efficiency of the on-line hydrocarbon removal instrument.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
3.5g of the template and 0.025mol of Pd (NO 3) 2.6H 2O and 0.025mol of RuCl3.3H2O were dissolved in 10ml of ethylene glycol, and an ethylenediamine solution was slowly added dropwise to the solution. After being mixed uniformly, the mixture is heated by microwave oven radiation, cooled to room temperature and washed by distilled water to obtain Pdx/Ruy which is dried. The obtained Pdx/Ruy is added into a 500mL flask, 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 5.0g of TEOS are added, ammonia water is added dropwise at the temperature of 45 ℃, the mixture is stirred and reacted for 6 hours, then the mixture is filtered, washed by water, dried in vacuum at the temperature of 65 ℃, and finally calcined in a muffle furnace at the temperature of 600 ℃ for 5 hours, and then PdxRuy/SiO2 nano-particles are obtained. 5.0g of PdxRuy/SiO2 nano-particles, 5.0g of MCM-22 and deionized water are treated on a ball mill for 1.5 to 3 hours to prepare molecular sieve water slurry. Then, under the vacuum state, the water slurry of the molecular sieve is evenly covered on the Zeolite surface. And finally, drying in a vacuum drying oven at 70 ℃, and calcining in a muffle furnace at 550 ℃ to obtain the PdxRuy/SiO2/MCM-22/Zeolite composite metal catalyst.
Example 2
3.5g of the template and 0.025mol of Pd (NO 3) 2.6H 2O and 0.025mol of RuCl3.3H2O were dissolved in 10ml of ethylene glycol, and an ethylenediamine solution was slowly added dropwise to the solution. After being mixed uniformly, the mixture is heated by microwave oven radiation, cooled to room temperature and washed by distilled water to obtain Pdx/Ruy which is dried. The obtained Pdx/Ruy is added into a 500mL flask, 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 7.5g of TEOS are added, ammonia water is added dropwise at the temperature of 45 ℃, the mixture is stirred and reacted for 6 hours, then the mixture is filtered, washed with water, dried in vacuum at the temperature of 65 ℃, and finally calcined in a muffle furnace at the temperature of 600 ℃ for 5 hours, and then PdxRuy/SiO2 nano-particles are obtained. 5.0g of PdxRuy/SiO2 nano-particles, 5.0g of MCM-22 and deionized water are treated on a ball mill for 1.5 to 3 hours to prepare molecular sieve water slurry. Then, under the vacuum state, the water slurry of the molecular sieve is evenly covered on the Zeolite surface. And finally, drying in a vacuum drying oven at 70 ℃, and calcining in a muffle furnace at 550 ℃ to obtain the PdxRuy/SiO2/MCM-22/Zeolite composite metal catalyst.
Example 3
3.5g of the template and 0.025mol of Pd (NO 3) 2.6H 2O and 0.025mol of RuCl3.3H2O were dissolved in 10ml of ethylene glycol, and an ethylenediamine solution was slowly added dropwise to the solution. After mixing uniformly, heating by microwave oven radiation, cooling to room temperature and washing with distilled water to obtain Pdx/Ruy and drying. The obtained Pdx/Ruy is added into a 500mL flask, 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 10.0g of TEOS are added, ammonia water is added dropwise at the temperature of 45 ℃, the mixture is stirred and reacted for 6 hours, then the mixture is filtered, washed by water, dried in vacuum at the temperature of 65 ℃, and finally calcined in a muffle furnace at the temperature of 600 ℃ for 5 hours, and then PdxRuy/SiO2 nano-particles are obtained. 5.0g of PdxRuy/SiO2 nano-particles, 5.0g of MCM-22 and deionized water are treated on a ball mill for 1.5 to 3 hours to prepare molecular sieve water slurry. Then, under the vacuum state, the water slurry of the molecular sieve is evenly covered on the Zeolite surface. And finally, drying in a vacuum drying oven at 70 ℃, and calcining in a muffle furnace at 550 ℃ to obtain the PdxRuy/SiO2/MCM-22/Zeolite composite metal catalyst.
Example 4
3.5g of the template and 0.025mol of Pd (NO 3) 2.6H 2O and 0.025mol of RuCl3.3H2O were dissolved in 10ml of ethylene glycol, and an ethylenediamine solution was slowly added dropwise to the solution. After being mixed uniformly, the mixture is heated by microwave oven radiation, cooled to room temperature and washed by distilled water to obtain Pdx/Ruy which is dried. The obtained Pdx/Ruy is added into a 500mL flask, 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 7.5g of TEOS are added, ammonia water is added dropwise under the condition of 45 ℃, the mixture is stirred and reacted for 6 hours, then the mixture is filtered, washed with water, dried under vacuum under the condition of 65 ℃, and finally calcined in a muffle furnace for 5 hours under the condition of 600 ℃, and PdxRuy/SiO2 nanoparticles are obtained. 5.0g of PdxRuy/SiO2 nano-particles, 3.5g of MCM-22 and deionized water are treated on a ball mill for 1.5 to 3 hours to prepare molecular sieve water slurry. Then, under the vacuum state, the water slurry of the molecular sieve is evenly covered on the Zeolite surface. And finally, drying in a vacuum drying oven at 70 ℃, and calcining in a muffle furnace at 550 ℃ to obtain the PdxRuy/SiO2/MCM-22/Zeolite composite metal catalyst.
Example 5
3.5g of the template and 0.025mol of Pd (NO 3) 2.6H 2O and 0.025mol of RuCl3.3H2O were dissolved in 10ml of ethylene glycol, and an ethylenediamine solution was slowly added dropwise to the solution. After mixing uniformly, heating by microwave oven radiation, cooling to room temperature and washing with distilled water to obtain Pdx/Ruy and drying. The obtained Pdx/Ruy is added into a 500mL flask, 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 7.5g of TEOS are added, ammonia water is added dropwise at the temperature of 45 ℃, the mixture is stirred and reacted for 6 hours, then the mixture is filtered, washed with water, dried in vacuum at the temperature of 65 ℃, and finally calcined in a muffle furnace at the temperature of 600 ℃ for 5 hours, and then PdxRuy/SiO2 nano-particles are obtained. 5.0g of PdxRuy/SiO2 nano-particles, 2.5g of MCM-22 and deionized water are treated on a ball mill for 1.5 to 3 hours to prepare molecular sieve water slurry. Then, under the vacuum state, the water slurry of the molecular sieve is evenly covered on the Zeolite surface. And finally, drying in a vacuum drying oven at 70 ℃, and calcining in a muffle furnace at 550 ℃ after drying to obtain the PdxRuy/SiO2/MCM-22/Zeolite composite metal catalyst.
Then, the catalyst of the PdxRuy/SiO2/MCM-22/Zeolite composite metal catalyst obtained in the embodiment 1-5 is filled into a fixed bed reactor with the diameter of 2cm and the length of 4cm, the reaction is carried out under the conditions that the reaction temperature is 400 ℃, the pressure is 0.7Mpa and the volume space velocity is 0.1h < -1 >, and the gas chromatography detection is carried out until the reaction is finished. The concentrations of the respective components in the test gas were 10.1X 10-6 (35.1 mg/m 3) for benzene, 10.6X 10-6 (43.6 mg/m 3) for toluene, 9.1X 10-6 (43.1 mg/m 3) for o-xylene, 10.0X 10-6 (7.14 mg/m 3) for methane, and 10.0X 10-6 (19.7 mg/m 3) for methane, and the remainder was nitrogen.
TABLE 1 catalyst compositions and catalytic efficiencies for examples 1-5
Comparative example 1
0.025mol of Pd (NO 3) 2.6H 2O is added into a 500mL flask, 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 10.0g of TEOS are added, ammonia water is added dropwise under the condition of 45 ℃ to stir and react for 6 hours, then the mixture is filtered, washed with water, dried under vacuum under the condition of 65 ℃ and finally calcined in a muffle furnace for 5 hours under the condition of 600 ℃ to obtain the Pd/SiO2 nano-particles.
Comparative example 2
Adding 0.025mol of RuCl3.3H2O into a 500mL flask, adding 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 10.0g of TEOS, dropwise adding ammonia water at 45 ℃, stirring, reacting for 6 hours, filtering the mixture, washing with water, drying in vacuum at 65 ℃, and finally calcining for 5 hours at 600 ℃ in a muffle furnace to obtain Ru/SiO2 nanoparticles.
Comparative example 3
Adding 0.025mol of Pd (NO 3) 2.6H 2O into a beaker, adding 5.0g of MCM-22 molecular sieve, and drying in an oven at the temperature of 95 ℃ to obtain Pd/MCM-22.
Comparative example 4
Adding 0.025mol of Pd (NO 3) 2.6H 2O into a beaker, adding 5.0g of MCM-22 molecular sieve, and drying in an oven at the temperature of 95 ℃ to obtain Pd/MCM-22.
Comparative example 5
3.5g of the template and 0.025mol of Pd (NO 3) 2.6H 2O and 0.025mol of RuCl3.3H2O were dissolved in 10ml of ethylene glycol, and an ethylenediamine solution was slowly added dropwise to the solution. After being mixed uniformly, the mixture is heated by microwave oven radiation, cooled to room temperature and washed by distilled water to obtain Pdx/Ruy which is dried. The obtained Pdx/Ruy is added into a 500mL flask, 250mL of ethanol, 50mL of purified water, 10g of CTMAB and 10.0g of TEOS are added, ammonia water is added dropwise at the temperature of 45 ℃, the mixture is stirred and reacted for 6 hours, then the mixture is filtered, washed by water, dried in vacuum at the temperature of 65 ℃, and finally calcined in a muffle furnace at the temperature of 600 ℃ for 5 hours, and then PdxRuy/SiO2 nano-particles are obtained.
Comparative example 6
3.5g of the template and 0.025mol of Pd (NO 3) 2.6H 2O and 0.025mol of RuCl3.3H2O were dissolved in 10ml of ethylene glycol, and an ethylenediamine solution was slowly added dropwise to the solution. After mixing uniformly, heating by microwave oven radiation, cooling to room temperature and washing with distilled water to obtain Pdx/Ruy and drying. And adding the obtained PdxRuy nano-particles into a beaker, adding 5.0g of MCM-22 molecular sieve, and drying in a drying oven at the temperature of 95 ℃ to obtain PdxRuy/MCM-22.
Then filling the catalyst obtained in the comparative examples 1-6 into a fixed bed reactor with the diameter of 2cm and the length of 4cm, carrying out reaction under the conditions of reaction temperature of 400 ℃, pressure of 0.7Mpa and volume space velocity of 0.1h < -1 >, and detecting by gas chromatography until the reaction is finished. The concentrations of the respective components in the test gas were 10.1X 10-6 (35.1 mg/m 3) for benzene, 10.6X 10-6 (43.6 mg/m 3) for toluene, 9.1X 10-6 (43.1 mg/m 3) for o-xylene, 10.0X 10-6 (7.14 mg/m 3) for methane, and 10.0X 10-6 (19.7 mg/m 3) for methane, and the remainder was nitrogen.
TABLE 2 catalyst compositions and catalytic efficiencies of comparative examples 1-6
According to the data, the catalyst prepared by the method has better catalysis effect on VOCs gas.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A preparation method of a composite metal catalyst for an online hydrocarbon removal instrument is characterized by comprising the following steps: s1: template, pd (NO) 3 ) 2 ·6H 2 O and RuCl 3 ·3H 2 Dissolving O in the first solvent, and adding an alkaline solution to obtain a mixture; then heating and separating the mixture to obtain a first solid; s2: adding the first solid, CTMAB, TEOS and a second solvent into a container, adding a precipitator for reaction, separating to obtain a second solid, and calcining the second solid to obtain Pd x Ru y /SiO 2 A nanoparticle; s3: pd is added x Ru y /SiO 2 Processing the nano particles, MCM-22 and water into molecular sieve water slurry, covering the molecular sieve water slurry on the surface of a zeolite carrier, drying and calcining to obtain the composite metal catalyst; the mole ratio of Pd to Ru in S1 is 0.5-2; the mol ratio of TEOS to Pd in S2 is 0.5-4, and the mol ratio of CTMAB to Pd is 0.5-4.
2. The preparation method of the composite metal catalyst for the online hydrocarbon removal instrument according to claim 1, wherein the heating method in the step S1 is as follows: heating with microwave oven for 30-60s.
3. The preparation method of the composite metal catalyst for the online hydrocarbon removal instrument according to claim 1, wherein the separation method in the S1 comprises the following steps: the mixture was cooled to room temperature and washed with water and dried at 45-75 ℃ to give a solid one.
4. The preparation method of the composite metal catalyst for the online hydrocarbon removal instrument as claimed in claim 1, wherein the calcination method in S2 is as follows: calcining the mixture in a muffle furnace at 500-600 ℃ for 1-5 hours.
5. The preparation method of the composite metal catalyst for the online hydrocarbon removal instrument according to claim 1, wherein the drying method in the step S3 comprises the following steps: drying in a vacuum drying oven at 60-100 deg.C for 3-6 hr; the calcining method in S3 comprises the following steps: calcining the mixture in a muffle furnace at 400-700 ℃ for 2-8 hours.
6. The method for preparing the composite metal catalyst for the online hydrocarbon removal instrument as claimed in claim 1, wherein the precipitant in S2 comprises ammonia or urea.
7. The method for preparing the composite metal catalyst for the online hydrocarbon removal instrument as claimed in claim 1, wherein the alkaline solution in S1 comprises n-butylamine, dimethylglyoxime, or ethylenediamine.
8. A composite metal catalyst for an online hydrocarbon removal instrument, which is prepared according to the preparation method of the composite metal catalyst for the online hydrocarbon removal instrument of any one of claims 1 to 7.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398295A (en) * | 2017-08-03 | 2017-11-28 | 江西国君环保科技有限公司 | A kind of catalyst and preparation method for catalytic purification VOC |
| JP2018202405A (en) * | 2017-05-31 | 2018-12-27 | 古河電気工業株式会社 | Catalyst structure for volatile organic substance and method for producing the same and device for removing volatile organic substance |
| CN110327968A (en) * | 2019-08-08 | 2019-10-15 | 广东恒峰蓝环境工程有限公司 | A kind of catalyst and preparation method thereof of purifying volatile organic matter |
| CN209656638U (en) * | 2019-01-22 | 2019-11-19 | 上海麦越环境技术有限公司 | A kind of VOCs on-line detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070149385A1 (en) * | 2005-12-23 | 2007-06-28 | Ke Liu | Catalyst system for reducing nitrogen oxide emissions |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018202405A (en) * | 2017-05-31 | 2018-12-27 | 古河電気工業株式会社 | Catalyst structure for volatile organic substance and method for producing the same and device for removing volatile organic substance |
| CN107398295A (en) * | 2017-08-03 | 2017-11-28 | 江西国君环保科技有限公司 | A kind of catalyst and preparation method for catalytic purification VOC |
| CN209656638U (en) * | 2019-01-22 | 2019-11-19 | 上海麦越环境技术有限公司 | A kind of VOCs on-line detector |
| CN110327968A (en) * | 2019-08-08 | 2019-10-15 | 广东恒峰蓝环境工程有限公司 | A kind of catalyst and preparation method thereof of purifying volatile organic matter |
Non-Patent Citations (2)
| Title |
|---|
| Zeolite MCM-22 Modified with Au and Cu for Catalytic Total Oxidation of Methanol and Carbon Monoxide;Kaminski, P，et al.;《JOURNAL OF PHYSICAL CHEMISTRY C》;20130207;第2147-2159页 * |
| 超临界干燥法制备载Ru-Pd硅气凝胶及其催化加氢制备1,4-环己二胺;熊亮亮等;《石油化工》;20181215;第1332-1337页 * |
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