CN106927514A - A kind of method for preparing nitrosyl nitric acid ruthenium - Google Patents

A kind of method for preparing nitrosyl nitric acid ruthenium Download PDF

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CN106927514A
CN106927514A CN201710165689.7A CN201710165689A CN106927514A CN 106927514 A CN106927514 A CN 106927514A CN 201710165689 A CN201710165689 A CN 201710165689A CN 106927514 A CN106927514 A CN 106927514A
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nitric acid
ruthenium
acid ruthenium
metal
nitrosyl nitric
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CN106927514B (en
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高传柱
白林奎
刘清华
杨波
钱韵旭
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G55/00Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/80Compositional purity

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Abstract

The invention discloses a kind of method for preparing nitrosyl nitric acid ruthenium.By metal Ru powder, vanadic anhydride (V2O5) be placed in porcelain crucible, it is then placed in micro-wave oven.First certain hour is calcined using 1000W power microwaves, then certain hour is calcined with 1400W ~ 1600W again, is passed through air and metal Ru powder is aoxidized, produce ruthenium tetroxide gas, collect gas and be passed into salpeter solution, then add natrium nitrosum heating and condensing reflux;By the prepared solution containing nitrosyl nitric acid ruthenium, add appropriate absolute ether to be extracted, then evaporate ether and obtain nitrosyl nitric acid ruthenium solid;The method raw material is easy to get, and product yield is high, simple to operate, is easy to treatment, and the solid nitrosyl nitric acid ruthenium for obtaining is free of halogen, and product purity is high, can be directly used for the preparation of catalyst.

Description

A kind of method for preparing nitrosyl nitric acid ruthenium
Technical field
The present invention relates to a kind of synthetic method of noble ruthenium catalyst, specifically one kind directly prepares Asia with metal Ru powder The method of nitryl nitric acid ruthenium.
Background technology
Load ruthenium catalyst has good catalysis activity, in petrochemical industry, organic synthesis, environmental project, pharmacy work The fields such as journey have a wide range of applications.Carrier, auxiliary agent and ruthenium activity presoma are influence load ruthenium catalyst catalytic performances Principal element.The electronic structure of ruthenium is 4d75s1, there is most oxidation state in all elements in the periodic table of elements, it is each Plant electronic structure has various geometries again, for the ruthenium complex for synthesizing various provides good basis.Supported ruthenium is catalyzed Active component ruthenium is introduced by ruthenium precursor compound in agent.Up to the present, before for preparing load ruthenium catalyst Driving body mainly has hydrate ruthenium trichloride (RuCl3·nH2O), ruthenium (Ru of ten dicarbapentaborane three3(CO)12), nitrosyl nitric acid ruthenium (Ru (NO) (NO3)3), potassium ruthenate (K2RuO4) etc..In the various compounds of ruthenium, RuCl3·nH2O is most common ruthenium compound, its property Matter stabilization, cheap, water-soluble and part organic solvent, is widely used in preparing load ruthenium catalyst.But due to this Contain substantial amounts of chlorion in the active presoma of kind, the chlorion remained on catalyst in catalyst preparation process cannot be complete Remove, there is certain inhibitory action to catalytic performance;Meanwhile, research finds not halogen-containing ruthenium precursor compound such as Ru (NO)(NO3)3And Ru3(CO)12It is the preferable presoma for preparing load ruthenium catalyst, but the price of this kind of compound is higher, Hinder application in the industry.
It is nitrosyl and it is the salpeter solution of nitrosyl nitric acid ruthenium that the nitrosyl nitric acid ruthenium of commercial type is most Introduce incomplete, cause the nitrosyl nitric acid ruthenium of preparation unstable, only in acid condition could stable existence, be condensed into solid The nitrosyl nitric acid ruthenium of part can resolve into metal Ru again after body.And this solution acidity is higher, it is unfavorable for that supported ruthenium is urged The preparation of agent, while also influencing whether the catalysis activity of catalyst.So replacing nitrosyl with solid nitrosyl nitric acid ruthenium Nitric acid ruthenium solution is used to prepare the active presoma of load ruthenium catalyst, increasingly attracts attention.Reason can be according to need The concentration wanted prepares the dipping solution of the ruthenium of nitric acid containing nitrosyl, it is also possible to the pH values needed for preparing catalyst with nitric acid regulation, more Be conducive to the preparation of load ruthenium catalyst.Therefore, for reduces cost, the mass production technique of solid nitrosyl nitric acid ruthenium Research has important practical significance.
Microwave is the technology for growing up early 1920s, is that material exists different from general conventional heating mode Cause " body heating " or " interior heating " in electromagnetic field by dielectric loss.Communication aspect is initially applied to, because it has very Good penetrability and selectivity, firing rate is fast, and material mode of heating is heated for body, can solve traditional heating mode generation " cold " center " problem, while the absorbable microwave energy of the material that is heated, the heating rate of each several part is identical in material, in the absence of temperature Gradient, so material is heated than more uniform in decomposable process.Meanwhile, microwave calcination has operation and equipment simple, defends safely It is raw, it is easy to control, technological process is short, small, efficient energy-saving is polluted, improve working conditions, the features such as save floor space, microwave adds Thermal technology has been widely used for the industries such as food, light textile, medicine, agricultural.
The content of the invention
It is an object of the present invention to provide a kind of synthetic method that nitrosyl nitric acid ruthenium is directly prepared with metal Ru powder, the synthesis side Method has relatively big difference with existing method;Because existing method is usually that ruthenium is obtained into RuCl by series of steps such as alkali fusions3· xH2O or RuO4Then it is that the effect such as nitric acid obtains Ru (NO) (NO Deng intermediate3)3Salpeter solution so that synthetic reaction compared with Complexity, post processing is cumbersome, not only needs temperature very high, in addition it is also necessary to which longer time is, it is necessary to purity oxygen or ozone conduct Oxidant, operating environment is than relatively hazardous.Meanwhile, chloride can be also introduced, so as to cause to contain impurity chlorine in product, easily cause Catalyst poisoning;And the present invention uses new method to use metal Ru powder for initiation material, Asia is directly prepared using microwave calcination method Nitryl nitric acid ruthenium, not only avoid prolonged high temperature, flammable gas required during reaction, such as purity oxygen, bring Danger, and synthesis step is simplified, reduce raw material dosage, hence it is evident that shorten the reaction time, improve reaction efficiency.
The method is raw material using metal Ru powder, prepares nitrosyl nitric acid ruthenium;Simplify synthesis step and post processing, hence it is evident that The reaction time is shortened, reaction efficiency is improve.
The technical solution adopted by the present invention is:Metal Ru, vanadic anhydride are placed in crucible, are put into micro-wave oven, first Microwave calcination is carried out under 1000W power, air is passed through, microwave calcination, air pair are then carried out under 1400W ~ 1600W power Metal Ru is aoxidized, and produces ruthenium tetroxide gas, is collected gas and is passed into salpeter solution, then adds nitrous Sour sodium or potassium nitrite heating and condensing reflux;By the prepared solution containing nitrosyl nitric acid ruthenium, absolute ether is added to be extracted Take, collect ether extraction liquid, then obtain nitrosyl nitric acid ruthenium solid after ether is evaporated;Its chemical reaction route be:
The metal Ru is 6~8 with the mol ratio of vanadic anhydride:1, the flow velocity of air is 4000 ~ 5000 m3·h-1
The metal Ru is 1 with the mol ratio of nitric acid:4~5, the mass concentration of salpeter solution is 45% ~ 60%.
The metal Ru is 1 with the mol ratio of natrium nitrosum or potassium nitrite:1.5 ~ 2, the time is heated to reflux for 6 ~ 8h.
The 1000W power microwaves calcine 15 ~ 20min, and 1400W ~ 1600W power microwaves calcine 60 ~ 100min.
Compared with prior art, the beneficial effects are mainly as follows:
Existing method is usually that ruthenium is obtained into RuCl by series of steps such as alkali fusions3·xH2O or RuO4Deng intermediate, Ran Hou Ru (NO) (NO is obtained in the effect such as nitric acid3)3Salpeter solution so that synthetic reaction is more complicated, post-process it is cumbersome, not only need Temperature very high, in addition it is also necessary to longer time.Meanwhile, chloride can be also introduced, so as to cause to contain impurity chlorine in product, hold Easily cause catalyst poisoning;And the present invention directly prepares nitrous with metal Ru powder using the method for microwave calcination as initiation material Acyl nitric acid ruthenium, not only avoid long-time high temperature, flammable gas required during reaction, such as purity oxygen, the danger for bringing, And synthesis step is simplified, and reduce raw material dosage, hence it is evident that shorten the reaction time, improve reaction efficiency.
Specific embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in This.
Embodiment 1:
Weigh the ruthenium powder of 5.0 g, the vanadic anhydride of 1.23g to be placed in porcelain crucible, be then placed in micro-wave oven;It is passed through air, Holding air velocity is 4000m3·h-1, 15min is calcined under 1000W microwave powers, then calcined under 1400W microblogging power 100min, aoxidizes to metal Ru powder;The RuO that will be produced4It is 45% that gas imports 3 equipped with 27.7g mass concentrations successively Salpeter solution absorption bottle in, and control the temperature of salpeter solution for 70 DEG C, obtain Ru (NO3)3Acid solution.
By Ru (NO obtained above3)3Acid solution be all placed in neck round bottom flask, be slowly added to 5.12g's NaNO2Powder, stirs and heating and condensing reflux 6h under the conditions of 80 DEG C, and solution colour gradually becomes dark red black, cools down molten Liquid, and be placed in separatory funnel, add the absolute ether of 83mL to extract 3 times, ether extraction liquid is collected, it is spin-dried for diethyl ether solution Yellow-brown solid 15.0g is obtained, calculated yield is 95.6%.Using KBr compressing tablets, the infrared of solid nitrosyl nitric acid ruthenium is determined Spectrogram.In 1917.18 cm-1There is the characteristic absorption peak of ruthenium and nitrosyl radical (Ru-NO) coordination in place, with Ru (NO) (NO3)3 Feature structure parameter matches.
Embodiment 2:
Weigh the ruthenium powder of 10.0 g, the vanadic anhydride of 2.4g to be placed in porcelain crucible, be then placed in micro-wave oven, be passed through air, Holding air velocity is 4500m3·h-1, 17min is calcined under 1000W microwave powers, then calcined under 1500W microwave powers 80min, aoxidizes to metal Ru powder.The RuO that will be produced4It is 50% that gas imports 3 equipped with 56.0g mass concentrations successively In the absorption bottle of salpeter solution, and control the temperature of salpeter solution for 70 DEG C, obtain Ru (NO3)3Acid solution.
By Ru (NO obtained above3)3Acid solution be all placed in neck round bottom flask, be slowly added to the KNO of 14.7g2 Powder, stirs and 7h is heated to reflux under the conditions of 80 DEG C, and solution colour gradually becomes dark red black, cools down solution, and put In separatory funnel, add the absolute ether of 168mL to extract 4 times, collect ether extraction liquid, be spin-dried for diethyl ether solution and obtain brown color Solid 30.20g, calculated yield is 96.3%.Using KBr compressing tablets, the infrared spectrogram of solid nitrosyl nitric acid ruthenium is determined. 1920.75 cm-1There is the characteristic absorption peak of ruthenium and nitrosyl radical (Ru-NO) coordination in place, with Ru (NO) (NO3)3Feature structure Parameter matches.
Embodiment 3:
Weigh the ruthenium powder of 15.0 g, the vanadic anhydride of 3.86g to be placed in porcelain crucible, be then placed in micro-wave oven, be passed through air, Holding air velocity is 5000m3·h-1, 19min is calcined under 1000W microwave powers, then calcined under 1600W microblogging power 60min, aoxidizes to metal Ru powder.The RuO that will be produced4It is 55% that gas imports 3 equipped with 85.1g mass concentrations successively In the absorption bottle of salpeter solution, and control the temperature of salpeter solution for 70 DEG C, obtain Ru (NO3)3Acid solution.
By Ru (NO obtained above3)3Acid solution be all placed in neck round bottom flask, be slowly added to 20.5g's NaNO2Powder, stirs and 8h is heated to reflux under the conditions of 80 DEG C, and solution colour gradually becomes dark red black, cools down solution, and will It is placed in separatory funnel, adds the absolute ether of 255mL to extract 3 times, collects ether extraction liquid, is spin-dried for diethyl ether solution and is obtained palm fibre Yellow solid 46.47g, calculated yield is 98.7%.Using KBr compressing tablets, the infrared spectrum of solid nitrosyl nitric acid ruthenium is determined Figure.In 1915.33 cm-1There is the characteristic absorption peak of ruthenium and nitrosyl radical (Ru-NO) coordination in place, with Ru (NO) (NO3)3Feature Structural parameters match.
Embodiment 4:
Weigh the ruthenium powder of 20.0 g, the vanadic anhydride of 6.0g to be placed in porcelain crucible, be then placed in micro-wave oven, be passed through air, Holding air velocity is 5000m3·h-1, 20min is calcined under 1000W microwave powers, then calcined under 1600W microblogging power 60min, aoxidizes to metal Ru powder.The RuO that will be produced4It is 55% that gas imports 3 equipped with 102.1g mass concentrations successively Salpeter solution absorption bottle in, and control the temperature of salpeter solution for 70 DEG C, obtain Ru (NO3)3Acid solution.
By Ru (NO obtained above3)3Acid solution be all placed in neck round bottom flask, be slowly added to 29.56g's KNO2Powder, stirs and 8h is heated to reflux under the conditions of 80 DEG C, and solution colour gradually becomes dark red black, cools down solution, and will It is placed in separatory funnel, adds the absolute ether of 306mL to extract 3 ~ 4 times, collects ether extraction liquid, is spin-dried for diethyl ether solution and is obtained Yellow-brown solid 60.3g, calculated yield is 96.1%.Using KBr compressing tablets, the infrared spectrum of solid nitrosyl nitric acid ruthenium is determined Figure.In 1914.86 cm-1There is the characteristic absorption peak of ruthenium and nitrosyl radical (Ru-NO) coordination in place, with Ru (NO) (NO3)3Feature Structural parameters match.
Embodiment 5:
Weigh the ruthenium powder of 25.0 g, the vanadic anhydride of 7.51g to be placed in porcelain crucible, be then placed in micro-wave oven.It is passed through air, Holding air velocity is 5000m3·h-1, 20min is calcined under 1000W microwave powers, then calcined under 1600W microblogging power 60min, aoxidizes to metal Ru powder.The RuO that will be produced4It is 60% that gas imports 3 equipped with 130.0g mass concentrations successively Salpeter solution absorption bottle in, and control the temperature of salpeter solution for 70 DEG C, obtain Ru (NO3)3Acid solution.
By Ru (NO obtained above3)3Acid solution be all placed in neck round bottom flask, be slowly added to 34.16g's NaNO2Powder, stirs and 8h is heated to reflux under the conditions of 80 DEG C, and solution colour gradually becomes dark red black, cools down solution, and will It is placed in separatory funnel, adds the absolute ether of 390mL to extract 3 ~ 4 times, collects ether extraction liquid, is spin-dried for diethyl ether solution and is obtained Yellow-brown solid 76.03g, calculated yield is 96.9%.Using KBr compressing tablets, the infrared light of solid nitrosyl nitric acid ruthenium is determined Spectrogram.In 1918.81 cm-1There is the characteristic absorption peak of ruthenium and nitrosyl radical (Ru-NO) coordination in place, with Ru (NO) (NO3)3It is special Structural parameters are levied to match.

Claims (5)

1. a kind of method for preparing nitrosyl nitric acid ruthenium, it is characterised in that:Metal Ru, vanadic anhydride are placed in crucible, first Microwave calcination is carried out under 1000W power, air is passed through, microwave calcination, air pair are then carried out under 1400W ~ 1600W power Metal Ru is aoxidized, and produces ruthenium tetroxide gas, is collected gas and is passed into salpeter solution, then adds nitrous Sour sodium or potassium nitrite heating and condensing reflux;By the prepared solution containing nitrosyl nitric acid ruthenium, absolute ether is added to be extracted Take, collect ether extraction liquid, then obtain nitrosyl nitric acid ruthenium solid after ether is evaporated.
2. the method for preparing nitrosyl nitric acid ruthenium according to claim 1, it is characterised in that:Metal Ru and vanadic anhydride Mol ratio be 6~8:1, the flow velocity of air is 4000 ~ 5000m3·h-1
3. the method for preparing nitrosyl nitric acid ruthenium according to claim 1, it is characterised in that:Metal Ru is rubbed with nitric acid You are than being 1:4~5, the mass concentration of salpeter solution is 45% ~ 60%.
4. the method for preparing nitrosyl nitric acid ruthenium according to claim 1, it is characterised in that:Metal Ru and natrium nitrosum or The mol ratio of potassium nitrite is 1:1.5 ~ 2, the time is heated to reflux for 6 ~ 8h.
5. the method for preparing nitrosyl nitric acid ruthenium according to claim 1, it is characterised in that:1000W power microwaves are calcined 15 ~ 20min, 1400W ~ 1600W power microwaves calcine 60 ~ 100min.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060245999A1 (en) * 2005-04-29 2006-11-02 Cabot Corporation High surface area tetragonal zirconia and processes for synthesizing same
CN102616868A (en) * 2012-03-05 2012-08-01 阳光凯迪新能源集团有限公司 Method for preparing solid nitrosyl ruthenium nitrate by using dead catalyst containing ruthenium
CN104556250A (en) * 2014-12-19 2015-04-29 昆明珀玺金属材料有限公司 New method for preparing ruthenium nitrosyl nitrate solution or pure crystal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060245999A1 (en) * 2005-04-29 2006-11-02 Cabot Corporation High surface area tetragonal zirconia and processes for synthesizing same
CN102616868A (en) * 2012-03-05 2012-08-01 阳光凯迪新能源集团有限公司 Method for preparing solid nitrosyl ruthenium nitrate by using dead catalyst containing ruthenium
CN104556250A (en) * 2014-12-19 2015-04-29 昆明珀玺金属材料有限公司 New method for preparing ruthenium nitrosyl nitrate solution or pure crystal

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