CN1186120C - Catalyst for producing ammonia and dimethyl amine by decomposing unsym-dimethyl hydrazine - Google Patents
Catalyst for producing ammonia and dimethyl amine by decomposing unsym-dimethyl hydrazine Download PDFInfo
- Publication number
- CN1186120C CN1186120C CNB001102354A CN00110235A CN1186120C CN 1186120 C CN1186120 C CN 1186120C CN B001102354 A CNB001102354 A CN B001102354A CN 00110235 A CN00110235 A CN 00110235A CN 1186120 C CN1186120 C CN 1186120C
- Authority
- CN
- China
- Prior art keywords
- ammonia
- dimethyl hydrazine
- unsymmetrical dimethyl
- catalyst
- produces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention relates to a catalyst for producing ammonia and dimethyl amine by decomposing unsymmetrical dimethylhydrazine, which is composed of an active component, an auxiliary agent component and a supporter. The present invention is characterized in that the active component is metal palladium, and the auxiliary agent component is one or several kinds of metal elements including Rh, Ru, IR, Pt and Co; the supporter is one or several kinds of substances including silicon oxide, alumina, activated carbon, and a general supporter of kieselguhr. The content of the metal palladium is from 0.1% to 30% and the content of the auxiliary agent is from 0.01% to 10%. The catalyst of the present invention can decompose the unsymmetrical dimethylhydrazine into useful ammonia and dimethyl amine at high activity and high conversion rate in a catalytic hydrogenolysis mode, and can realize the device miniaturization for decomposing the unsymmetrical dimethylhydrazine into the ammonia and dimethyl amine.
Description
The present invention relates to the protection of environment, provide a kind of bimetal component catalyst to decompose the application that produces in ammonia and the dimethylamine especially at unsymmetrical dimethyl hydrazine.
1, the 1-dimethylhydrazine claims unsymmetrical dimethyl hydrazine again, is colourless liquid, and irritating smell is arranged.In air, unsymmetrical dimethyl hydrazine easily is fuming and flavescence by slow oxidation.At present, unsymmetrical dimethyl hydrazine mainly is to adopt chloramine method production, and hypochlorous sodium, ammoniacal liquor and dimethylamine are raw material production.
The main application of unsymmetrical dimethyl hydrazine is the liquid fuel as rocket.The unsymmetrical dimethyl hydrazine of prolonged preservation can be generated a part of hydrazone by the air slow oxidation.
The object of the present invention is to provide a kind of bimetal component catalyst to decompose the application that produces in ammonia and the dimethylamine at unsymmetrical dimethyl hydrazine, it can be useful ammonia and dimethylamine with the unsymmetrical dimethyl hydrazine catalytic decomposition, and active high, and higher transformation efficiency is arranged.
The invention provides a kind of bimetal component catalyst and decompose the application that produces in ammonia and the dimethylamine at unsymmetrical dimethyl hydrazine, catalyzer is made up of main active ingredient, adjuvant component and carrier; It is characterized in that: main active ingredient is a palladium metal, and adjuvant component is selected from Rh, and Ru, Ir, Pt, Ni, one or more of Co metallic element, carrier are selected from one or more of silicon oxide, aluminum oxide, gac, diatomite carrier commonly used; The palladium metal weight content is good at 0.1-30% with 0.5-5%, and the auxiliary agent weight content is good at 0.01-10% with 0.05-5%.
Used carrier can be selected ball-type, column type and sheet type for use among the present invention; Its preparation process is with the solubility salt of palladium metal and auxiliary element such as nitrate, muriatic aqueous solution dipping carrier, drying; Use hydrogen reducing, reduction temperature is 100-500 ℃, and the recovery time is 0.5-14 hour.
Use catalyzer of the present invention can adopt flow process as shown in Figure 1, major equipment is as follows successively in the flow process, unsymmetrical dimethyl hydrazine storage tank (1), unsymmetrical dimethyl hydrazine pump (2), vaporizer (3), reactor (4), water cooler (5) and separator (6) are mixed some common chemical computation equipment, valve and miscellaneous equipments again.Reactor can be one or several in parallel or series connection use, or switches use.Reactor can be a shell and tube reactor, and this reactor can or be bordering under the isothermal condition at isothermal and move, and catalyzer is housed in the pipe, is thermal oil between pipe.Yet ordinary priority is selected adiabatic reactor for use, and is because it is lower than shell and tube reactor cost, easy for installation.Technological operation is described as follows: quantitatively be transported to the unsymmetrical dimethyl hydrazine in the storage tank in the vaporizer with pump, the temperature of vaporizer generally maintains 100-200 ℃, make the unsymmetrical dimethyl hydrazine vaporization, the gasiform unsymmetrical dimethyl hydrazine enters reactor through pipeline, and the temperature of reactor generally maintains 100-300 ℃, and the gasiform unsymmetrical dimethyl hydrazine contacts with catalyzer in reactor, and generation cartalytic decomposition effect, generate products such as ammonia and dimethylamine, product is realized separating of ammonia and dimethylamine in separating tank through cooling.Entire reaction course is the normal pressure process, also can carry out having under the condition of certain pressure.In a word, catalyzer of the present invention is useful ammonia and dimethylamine with the unsymmetrical dimethyl hydrazine catalytic decomposition, and is active high, very high transformation efficiency arranged, and can make device miniaturization, is installed on the automobile, at the ground, storehouse of various a large amount of storage unsymmetrical dimethyl hydrazines on-the-spot disposal.Further be described by the following examples
Accompanying drawing 1 is to have the unsymmetrical dimethyl hydrazine catalytic decomposition of a reactor to prepare the experimental installation simplified flow chart of ammonia and dimethylamine.
Example 1
Take by weighing carrier silicon-dioxide 49.45 grams, dispose 50 milliliters and contain 0.837 gram Palladous chloride and 0.103 gram ruthenium trichloride aqueous hydrochloric acid, contain the Palladous chloride of 0.837 gram and the aqueous hydrochloric acid dipping 49.45 gram silicon-dioxide of 0.103 gram ruthenium trichloride with 50 milliliters that configure, place, seasoning under the room temperature, then, 120 ℃ of dryings 2 hours, then, under hydrogen stream, reduced 1 hour.Make the silica supported palladium catalyst that contains the ruthenium auxiliary agent.
Example 2
Adopt experimental installation as shown in drawings to carry out the catalytic decomposition of unsymmetrical dimethyl hydrazine.Reaction pressure is a normal pressure, and temperature of reaction is 180 ℃, and catalyzer is the made catalyzer of example 1, and catalyst levels is 10 grams, and the inlet amount of unsymmetrical dimethyl hydrazine is 28.2 milliliters/hour, and experimental result is listed in the table 1.
Table 1. experimental result
| Instance number | Unsymmetrical dimethyl hydrazine (ml/h) | Reaction pressure (MPa) | Temperature of reaction (℃) | Unsymmetrical dimethyl hydrazine transformation efficiency (mol%) | Ammonia yield (mol%) | Dimethylamine yield (mol%) |
| 2 | 28.2 | Normal pressure | 180 | 91.3 | 24.1 | 70.6 |
Claims (5)
1. a bimetal component catalyst decomposes the application that produces in ammonia and the dimethylamine at unsymmetrical dimethyl hydrazine, and catalyzer is made up of main active ingredient, adjuvant component and carrier; It is characterized in that: main active ingredient is a palladium metal, and adjuvant component is selected from Rh, and Ru, Ir, Pt, Ni, one of Co metallic element, carrier are selected from one or more of silicon oxide, aluminum oxide, gac, diatomite; The palladium metal weight content is at 0.1-30%, and the auxiliary agent weight content is at 0.01-10%.
2. decompose the application that produces in ammonia and the dimethylamine according to the described bimetal component catalyst of claim 1 at unsymmetrical dimethyl hydrazine, it is characterized in that: described palladium metal weight content is at 0.5-5%.
3. decompose the application that produces in ammonia and the dimethylamine according to the described bimetal component catalyst of claim 1 at unsymmetrical dimethyl hydrazine, it is characterized in that: described auxiliary agent weight content is at 0.05-5%.
4. decompose the application that produces in ammonia and the dimethylamine according to the described bimetal component catalyst of claim 1 at unsymmetrical dimethyl hydrazine, it is characterized in that: used carrier is selected ball-type, column type and sheet type for use.
5. decompose the application that produces in ammonia and the dimethylamine according to the described bimetal component catalyst of claim 1 at unsymmetrical dimethyl hydrazine, it is characterized in that: the Preparation of catalysts process is, with the solubility nitrate or the muriatic aqueous solution dipping carrier of palladium metal and auxiliary element, drying; Use hydrogen reducing, reduction temperature is 100-500 ℃, and the recovery time is 0.5-14 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001102354A CN1186120C (en) | 2000-03-22 | 2000-03-22 | Catalyst for producing ammonia and dimethyl amine by decomposing unsym-dimethyl hydrazine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001102354A CN1186120C (en) | 2000-03-22 | 2000-03-22 | Catalyst for producing ammonia and dimethyl amine by decomposing unsym-dimethyl hydrazine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1314306A CN1314306A (en) | 2001-09-26 |
| CN1186120C true CN1186120C (en) | 2005-01-26 |
Family
ID=4580244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001102354A Expired - Fee Related CN1186120C (en) | 2000-03-22 | 2000-03-22 | Catalyst for producing ammonia and dimethyl amine by decomposing unsym-dimethyl hydrazine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1186120C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464842C (en) * | 2006-07-14 | 2009-03-04 | 中国科学院大连化学物理研究所 | Hydrazine decomposition catalyst and its preparation method |
| CN101214444B (en) * | 2007-01-04 | 2010-04-21 | 北京有色金属研究总院 | Catalyst for sodium borohydride catalyzing hydrolyzation hydrogen supplying method and preparation thereof |
| CN102091638B (en) * | 2009-12-10 | 2012-09-26 | 中国科学院大连化学物理研究所 | Catalyst for use in preparation of piperidine and piperidine derivatives |
| CN103386305B (en) * | 2013-07-31 | 2015-09-09 | 南京威安新材料科技有限公司 | For the preparation of hydrazine and ammonia nitrogen waste water process catalyst and technique for applying thereof and device |
-
2000
- 2000-03-22 CN CNB001102354A patent/CN1186120C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1314306A (en) | 2001-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rajadhyaksha et al. | Solvent effects in catalytic hydrogenation | |
| Mikami et al. | Kinetic and adsorption studies on the hydrogenation of nitrate and nitrite in water using Pd-Cu on active carbon support | |
| US6117409A (en) | Process for producing hydrogen peroxide by direct synthesis | |
| Jones | Catalysis in Organic Syntheses | |
| EA014430B1 (en) | Method for reducing the nitrogen oxide concentration in gases | |
| CN110327929B (en) | Cobalt-aluminum hydrotalcite derived composite oxide and preparation method and application thereof | |
| JPH0716448A (en) | Preparation of aerogel containing transition metal, transition metal-aerogel carrier catalyst and method for oxidation of hydrogen and decomposition of hydrogen peroxide | |
| KR100318353B1 (en) | How to purify exhaust gas | |
| CN1186120C (en) | Catalyst for producing ammonia and dimethyl amine by decomposing unsym-dimethyl hydrazine | |
| JPH02198639A (en) | Catalyst for decomposing ammonia | |
| CN101658761B (en) | Catalyst polymerization method for removing acetylene from gas selectively | |
| JP3688314B2 (en) | Ammonia decomposition method | |
| US4777302A (en) | Method for hydrogenating an aldehyde and/or a ketone | |
| CN1188348C (en) | Catalytic hydrogenolysis of unsym-dimethyl hydrazine | |
| Söderlund et al. | Catalyst deactivation in diborane decomposition | |
| CN1136970C (en) | Catalyst for catalytic hydrogenolysis of unsym-dimethylhydrazine and its prepn | |
| EP1303480A1 (en) | Process for the production of cyclohexanone oxime | |
| KR20030004660A (en) | Cleaning method of exhaust gas containing ammonia/hydrogen mixtures and the apparatus therefor | |
| US3053613A (en) | Method of purifying gases containing oxygen and oxides of nitrogen | |
| Hirano et al. | The reduction of nitric oxide by hydrogen over Pt, Rh and Pt-Rh single crystal surfaces | |
| CN101565357A (en) | Method of low-temperature catalytic dechlorination of chlorophenol | |
| Lee et al. | Methanol decomposition over supported palladium and platinum | |
| Aika et al. | Basic concepts and properties of new generation ammonia synthesis catalysts for industrial use | |
| CN1392100A (en) | Process and device for preparing ammonia and dimethylamine by unsym-dimethyl hydrazine catalyzed hydrogenolysis | |
| CA1172264A (en) | Fixed bed catalyst for mnb and dnt hydrogenation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |