CN101209419A - Iron compound supported platinum catalyst and preparation thereof - Google Patents
Iron compound supported platinum catalyst and preparation thereof Download PDFInfo
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- CN101209419A CN101209419A CN 200610105398 CN200610105398A CN101209419A CN 101209419 A CN101209419 A CN 101209419A CN 200610105398 CN200610105398 CN 200610105398 CN 200610105398 A CN200610105398 A CN 200610105398A CN 101209419 A CN101209419 A CN 101209419A
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Abstract
The invention discloses an iron compound loaded platinum catalyst and a preparation method thereof. A catalyst carrier is iron oxide or iron hydroxide, and an active component is platinum; percentage composition of platinum mass is 0.1 to 20 percent of the carrier and the catalyst is prepared by adopting a coprecipitation method. The catalyst of the invention is expected to be widely applied in reforming reaction, hydrogenation dehydrogenation reaction and catalyzing combustion pollutants, etc.
Description
Technical field
The present invention relates to a kind of iron compound supported platinum catalyst and preparation method thereof, supported platinum catalyst and preparation method thereof on particularly a kind of iron oxide or the iron hydroxide.
Background technology
The platinum metal catalysts purposes spreads all over fields such as oil, chemical industry, environmental protection.Since Pt/ γ-Al has successfully studied in UOP in 1949
2O
3Since the reforming catalyst, the reforming catalyst of industrial use mostly is to carry platinum, as Pt-Re/ γ-Al
2O, Pt-Ir/ γ-Al
2O, Pt-Sn/ γ-Al
2O etc.At chemical field, platinum is the custom catalysts of hydrogenation dehydrogenation.In the last few years, the catalytic action of platinum metal in the alcohols catalytic oxidation that uses molecular oxygen (air) to carry out also became increasingly conspicuous.Use molecular oxygen can not pollute, become " green " catalyst, and cheaply be easy to get, therefore in Chemical Manufacture, be popular as oxidant.Aspect environmental protection, the VOC of industrial process and motor vehicle exhaust emission (VOCs) is a class atmosphere pollution of generally acknowledging, the most important catalyst of this pollutant of catalytic combustion is supporting Pt, Pd noble metal catalyst.Discover, the Pt catalyst to the catalytic activity of VOCs be better than the Pd catalyst (Skoglundh M et al.Appl.Catal.1991,77,9-20, Tsou J et al.Appl.Catal.B, 2005,57,117-123.).In addition, formaldehyde is the indoor pollutant that a kind of and the daily life of people are closely related, have a strong impact on health.Current research is the result show, Pt catalyst formaldehyde has very high catalytic activity, in addition can be at ambient temperature with the formaldehyde catalytic combustion fully (Changbin Zhang etal.Appl.Catal.B, 2006,65,37-43).
The Preparation of catalysts technology plays important effect at the physicochemical properties and the aspect of performance of catalyst in chemical reaction of control load type catalyst.In addition, the appropriate catalyst carrier plays important effect equally to the performance of catalyst in reaction.The method of load platinum catalyst preparation mainly contains infusion process, ion-exchange, sol-gel process etc., metal-organic decomposition method, polymer Protection Code etc.At present, most of commercial loaded catalyst platinum is all by immersion process for preparing---and to carrier, drying is removed solvent then, and at high temperature roasting activates catalyst with the salt solution impregnation of active component.Such preparation method has many defectives, mainly comprises: 1) owing to the high viscosity of water, the activity component metal salting liquid is difficult to enter the duct of carrier; 2) decentralization of reactive metal is lower; 3) active component skewness; 4) in dry run because capillary flow can cause that carrier structure changes etc.And the carrier of load platinum catalyst uses " torpescence " carriers such as aluminium oxide, silica mostly, and uses iron compound also rarely found as platinum catalyst vector.
Because the limitation of traditional preparation process method and carrier makes the application of supported platinum catalyst be subjected to certain restriction.Such as, with the metallographic ratio, platinum catalyst is just very low to the oxidation activity of carbon monoxide oxidation, and this is likely that the nano platinum particle of high degree of dispersion causes because the traditional preparation process method can not obtain.Coprecipitation is proved to be a kind of preparation method that can obtain the high-dispersion nano particle, in the preparation of supported aurum catalyst, achieve success (M.Hurata et al.J.Catal.1989,115,301-309).And iron oxide (iron hydroxide) also be proved to be a kind of carrier preferably (Y.Deng et al.Chem.Commun.2003,2192-2193.).Therefore along with the appearance and the development of Preparation of Catalyst new technology, use new preparation method to prepare new load platinum catalyst and have very high realistic meaning and using value.
Summary of the invention
The purpose of this invention is to provide a kind of iron compound supported platinum catalyst and preparation method thereof.
A kind of iron compound supported platinum catalyst is characterized in that catalyst carrier is iron oxide or iron hydroxide, and active component is a platinum, and platinum quality percentage composition is the 0.1%-20% of carrier.
Catalyst of the present invention, catalyst adopt the coprecipitation preparation, it is characterized in that detailed process is: under the normal temperature, with Fe (NO
3)
3Solution and platinum salt solution mix are even, stir down dropwise to join in the precipitant solution, form co-precipitation, dispersed with stirring, leave standstill, filter, washing, 20-100 ℃ drying, 20-800 ℃ of roasting, 1-100vol% hydrogen is 100-500 ℃ of reduction.
In the Preparation of catalysts process, used platinum salt is selected from H
2PtCl
6NH
2O, K
2PtCl
6, Na
2PtCl
6, (NH
4)
2PtCl
6Or Pt (NO
3)
2
In the Preparation of catalysts process, used precipitating reagent is selected from NaOH, Na
2CO
3, Li
2CO
3, KOH, K
2CO
3Or NH
3H
2O.
Catalyst of the present invention aspect oil, is expected to be used for reforming reaction; Aspect chemical industry, be expected to be used for the hydrogenation dehydrogenation reaction; Aspect environmental protection, be expected to be used for the catalytic combustion pollutant; Even may be at ambient temperature that the formaldehyde catalytic combustion is complete.
Compared with the prior art, the substantial characteristics that have of the present invention are:
1, catalyst prepares with coprecipitation, can obtain high dispersive, uniform relatively, the less nanometer platinum particles of yardstick, helps improving catalyst activity, and improves the utilization rate of active component platinum.
2, catalyst uses iron oxide or iron hydroxide as carrier.
3, catalyst combines with existing honeycomb support is easy, the catalyst that preparation shape, big I are regulated as required.
The specific embodiment
Embodiment 1:
Fe (NO with 1mol/L
3)
3The H of solution 10ml and 0.19mol/L
2PtCl
66H
2O solution 0.1ml mixes, and dropwise joins the NaCO of 1mol/L under the strong agitation
3Among the solution 36ml, form co-precipitation, regulating the pH value is 9, continues stirring 2h, leaves standstill 2.5h, filters, and the distilled water washing is placed down for 20 ℃ and made the catalyst air dry in 24 hours, gets required catalyst.
Embodiment 2:
Fe (NO with 1mol/L
3)
3The H of solution 10ml 0.19mol/L
2PtCl
6Solution 0.2ml mixes, and dropwise joins 20ml in the NaOH solution of 1mol/L under the strong agitation, forms co-precipitation, and regulating pH value is 8, continues to stir 3h, leaves standstill 3h, filter, and the distilled water washing, 100 ℃ of dryings 5 hours get required catalyst.
Embodiment 3:
Fe (NO with 1mol/L
3)
3(the NH of solution 10ml and 0.22mol/L
4)
2PtCl
6Solution 0.2ml mixes, and dropwise joins the K of 1mol/L under the strong agitation
2CO
3Among the solution 30ml, form co-precipitation, regulating pH value is 8, continues to stir 2h, leaves standstill 3h, filters, and washs 50 ℃ of dryings 10 hours, 200 ℃ of 10%H with distilled water
2Reduced 0.5 hour, and got required catalyst.
Embodiment 4:
Fe (NO with 1mol/L
3)
3(the NH of solution 5ml and 0.22mol/L
4)
2PtCl
6Solution 0.5ml mixes, and dropwise joins under the strong agitation in the KOH solution of 15ml 1mol/L, forms co-precipitation, and regulating pH value is 9, continues to stir 3h, leaves standstill 3h, filter, with the distilled water washing, 100 ℃ dry 5 hours down, get required catalyst.
Embodiment 5:
Fe (NO with 1mol/L
3)
3The K of solution 10ml and 0.20mol/L
2PtCl
6Solution 0.1ml mixes, and dropwise joins under the strong agitation in the KOH solution of 10ml 1mol/L, forms co-precipitation, and regulating the pH value is 9, continue to stir 2h, leave standstill 3h, filter, wash with distilled water, 100 ℃ dry 5 hours down, 200 ℃ of pure hydrogen reductase 12s hour, required catalyst.
Embodiment 6:
Fe (NO with 1mol/L
3)
3The Na of solution 10ml and 0.22mol/L
2PtCl
6Solution 0.2ml mixes, and dropwise joins the Na of 36ml 1mol/L under the strong agitation
2CO
3In the solution, form co-precipitation, regulating pH value is 9, continues to stir 5h, leaves standstill 5h, filter, the distilled water washing, 50 ℃ dry 10 hours down, get required catalyst.
Embodiment 7:
Fe (the NO of 1mol/L
3)
3The K of solution 10ml and 0.19mol/L
2PtCl
6Solution 0.2ml mixes, and dropwise joins the K of 1mol/L under the strong agitation
2CO
3Among the solution 40ml, form co-precipitation, regulating pH value is 10, continues to stir 2h, leaves standstill 2.5h, filter, and with the distilled water washing, 80 ℃ of dryings 5 hours down, 500 ℃ of following 10%H
2Reductase 12 hour, required catalyst.
Embodiment 8:
Fe (NO with 1mol/L
3)
3The H of solution 15ml and 0.19mol/L
2PtCl
6Solution 0.2ml mixes, and dropwise joins under the strong agitation in the NaOH solution of 20ml 1mol/L, forms co-precipitation, and regulating the pH value is 8, continues stirring 5h, leaves standstill 5h, filters, and with the distilled water washing, 20 ℃ got catalyst down in dry 24 hours.
Claims (4)
1. an iron compound supported platinum catalyst is characterized in that catalyst carrier is iron oxide or iron hydroxide, and active component is a platinum, and platinum quality percentage composition is the 0.1%-20% of carrier.
2. Preparation of catalysts method according to claim 1 adopts the coprecipitation preparation, it is characterized in that: under the normal temperature, with Fe (NO
3)
3Solution and platinum salt solution mix are even, stir down dropwise to join in the precipitant solution, form co-precipitation, dispersed with stirring, leave standstill, filter, washing, 20-100 ℃ drying, 20-800 ℃ of roasting, 1-100vol% hydrogen is 100-500 ℃ of reduction.
3. method as claimed in claim 2 is characterized in that: platinum salt is selected from H
2PtCl
6NH
2O, K
2PtCl
6, Na
2PtCl
6, (NH
4)
2PtCl
6Or Pt (NO
3)
2
4. method as claimed in claim 2 is characterized in that: precipitating reagent is selected from NaOH, Na
2CO
3, Li
2CO
3, KOH, K
2CO
3Or NH
3H
2O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610105398 CN101209419A (en) | 2006-12-26 | 2006-12-26 | Iron compound supported platinum catalyst and preparation thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610105398 CN101209419A (en) | 2006-12-26 | 2006-12-26 | Iron compound supported platinum catalyst and preparation thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101209419A true CN101209419A (en) | 2008-07-02 |
Family
ID=39609774
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|---|---|---|---|
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|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909096A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Dehydrogenation catalyst activation method combining high-temperature reduction of short duration with low-temperature reduction |
| CN103111306A (en) * | 2013-02-07 | 2013-05-22 | 浙江工业大学 | Magnetic load type nanometer palladium/iron grain catalyst and preparation method and application thereof |
| CN103819295A (en) * | 2012-11-19 | 2014-05-28 | 中国科学院大连化学物理研究所 | Application of catalyst to selective hydrogenation reaction of aromatic nitro compound |
| CN104689829A (en) * | 2013-12-10 | 2015-06-10 | 中国科学院大连化学物理研究所 | Ferric hydroxide loaded rhodium-based catalyst and preparation and application thereof |
| CN109395730A (en) * | 2018-11-15 | 2019-03-01 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method for vinyl chloride low-temperature catalytic burning ruthenium cerium codope tin-based catalyst and products thereof and application |
| GB2611859A (en) * | 2022-08-09 | 2023-04-19 | Petroleo Brasileiro Sa Petrobras | Method of preparing the water-gas shift catalyst, catalyst, use and process to reduce the content of carbon monoxide |
-
2006
- 2006-12-26 CN CN 200610105398 patent/CN101209419A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909096A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Dehydrogenation catalyst activation method combining high-temperature reduction of short duration with low-temperature reduction |
| CN102909096B (en) * | 2011-08-01 | 2014-12-31 | 中国石油化工股份有限公司 | Dehydrogenation catalyst activation method combining high-temperature reduction of short duration with low-temperature reduction |
| CN103819295A (en) * | 2012-11-19 | 2014-05-28 | 中国科学院大连化学物理研究所 | Application of catalyst to selective hydrogenation reaction of aromatic nitro compound |
| CN103819295B (en) * | 2012-11-19 | 2016-04-27 | 中国科学院大连化学物理研究所 | The application of a kind of catalyzer in aromatic nitro compound selective hydrogenation |
| CN103111306A (en) * | 2013-02-07 | 2013-05-22 | 浙江工业大学 | Magnetic load type nanometer palladium/iron grain catalyst and preparation method and application thereof |
| CN104689829A (en) * | 2013-12-10 | 2015-06-10 | 中国科学院大连化学物理研究所 | Ferric hydroxide loaded rhodium-based catalyst and preparation and application thereof |
| CN109395730A (en) * | 2018-11-15 | 2019-03-01 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method for vinyl chloride low-temperature catalytic burning ruthenium cerium codope tin-based catalyst and products thereof and application |
| CN109395730B (en) * | 2018-11-15 | 2021-04-13 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of ruthenium and cerium co-doped tin-based catalyst for low-temperature catalytic combustion of vinyl chloride, product and application thereof |
| GB2611859A (en) * | 2022-08-09 | 2023-04-19 | Petroleo Brasileiro Sa Petrobras | Method of preparing the water-gas shift catalyst, catalyst, use and process to reduce the content of carbon monoxide |
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