CN1736587A - Supported catalyst for pyridine synthesis by tetrahydrofurfuryl alcohol and preparation process thereof - Google Patents
Supported catalyst for pyridine synthesis by tetrahydrofurfuryl alcohol and preparation process thereof Download PDFInfo
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- CN1736587A CN1736587A CN 200510014046 CN200510014046A CN1736587A CN 1736587 A CN1736587 A CN 1736587A CN 200510014046 CN200510014046 CN 200510014046 CN 200510014046 A CN200510014046 A CN 200510014046A CN 1736587 A CN1736587 A CN 1736587A
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- catalyst
- carrier
- pyridine
- tetrahydrofurfuryl alcohol
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Abstract
The invention discloses a supported catalyst for synthesizing pyridine with tetrahydrofurfuryl alcohol and discloses the method for preparation, belonging to the catalyst technique for synthesizing pyridine. Said carrier of the catalyst is gamma- A1203, one of supporter components is MoO3, the mass of which is 5- 30% to that of carrier, and another supporter component is La, Ce or Cd oxide, the mass of which is 0.5- 15% to that of carrier. The technique contains the following processes: Dissolving ammonium molybdate and a nitrate containing La, Ce or Cd into water to prepare an ammonium molybdate solution and a nitrate solution, mixing the dried gamma- A1203, mixing to make sure that the solution is uniformly absorbed into the micropore of the carrier aluminum oxide, drying in room temperature; redrying the room- temperature dried catalyst and igniting to prepare the supported catalyst that is used to synthesize pyridine with tetrahydrofurfuryl alcohol. The device needed is simple, the production is convenient, and the selectivity and yield of product pyridine is high.
Description
Technical field
The present invention relates to a kind of loaded catalyst that is used for pyridine synthesis by tetrahydrofurfuryl alcohol and preparation method thereof, belong to the catalyst technology of pyridine synthesis.
Background technology
Pyridine is important organic solvent and fine chemical material, is widely used in synthetic rubber, and dyestuff is in medicine and the pesticide field.
Pyridine can be obtained by the byproduct of coal-tar industry or coke production, but output is lower, and the method for optimizing that obtains pyridine is to carry out catalysis to synthesize.The synthetic general catalytic gas phase reaction of catalysis by ammonia and aldehydes or ketones.Yet these process for catalytic synthesis always have the low and poor selectivity of yield, and operation cycle and the short shortcoming of catalyst life.
Method by tetrahydrofurfuryl alcohol and ammonia synthesis pyridine is also arranged, and its key technology is the efficient of catalyst.US3238214 is disclosed to be to be the raw material pyridine synthesis with tetrahydrofurfuryl alcohol, ammonia, and what it adopted is the catalyst that palladium loads on aluminium oxide.GB911523 is disclosed also to be method from pyridine synthesis by tetrahydrofurfuryl alcohol, and what it adopted is the catalyst that molybdenum oxide or vanadium oxide load on aluminium oxide.But they all exist the selectivity and the not high problem of yield of pyridine.
Summary of the invention
The object of the present invention is to provide a kind of loaded catalyst that is used for pyridine synthesis by tetrahydrofurfuryl alcohol and preparation method thereof, it is the raw material pyridine synthesis that this catalyst is used for tetrahydrofurfuryl alcohol, ammonia, has the selectivity and the higher characteristics of yield of product pyridine.
For achieving the above object, the present invention is realized by following proposal.A kind of loaded catalyst that is used for pyridine synthesis by tetrahydrofurfuryl alcohol is characterized in that, this catalyst carrier is γ-Al
2O
3, load group/one is MoO
3, load capacity is 5～30% of a carrier quality; Two of load group branch is the oxide of La, Ce or Cd, and load capacity is 0.5～15% of a carrier quality.
The MoO of above-mentioned catalyst
3Load capacity is 10～20%, and the oxide carried amount of La, Ce or Cd is 2～10%.
Above-mentioned Preparation of catalysts method, it is characterized in that comprising following process: ammonium molybdate and the nitrate that comprises a kind of La, Ce or Cd are dissolved in the water, be made into the ammonium molybdate solution of mass concentration 2～40% and 0.5～30% nitrate solution, then with dried γ-Al
2O
3Carrier is put into solution and is mixed, and stirs to make solution evenly be absorbed γ-Al
2O
3In the micropore of carrier, dry under the room temperature; Catalyst with drying at room temperature, in 400～800 ℃ of calcinations 4～10 hours, naturally cools to room temperature afterwards and makes catalyst after 0.5～4 hour 100～150 ℃ of dryings then.
The baking temperature of above-mentioned catalyst is 110～120 ℃, and be 2～3 hours drying time, and calcination temperature is 500～600 ℃, and calcination time is 5～8 hours.
Advantage of the present invention is: device therefor is simple, and is convenient for production, is used for pyridine synthesis by tetrahydrofurfuryl alcohol product selectivity and yield height.
The specific embodiment
Embodiment 1
Adopt molybdenum oxide, lanthana to load on γ-Al
2O
3On the carrier.Its preparation is: with 6.2g (NH
4)
6Mo
7O
24.4H
2O, 5.4g La (NO
3)
3.6H
2O is dissolved in the 100mL water, then with dried 50g γ-Al
2O
3Carrier is put into solution and mixed, and stirs solution is evenly absorbed in the micropore of alumina support, and is dry under the room temperature; Then with the catalyst of drying at room temperature 150 ℃ of dryings 4 hours, loaded catalyst was promptly made in 800 ℃ of calcinations in 4 hours, wherein the load capacity of molybdenum oxide is 10% of a carrier quality, the load capacity of lanthana is 4% of a carrier quality.
Embodiment 2
Adopt molybdenum oxide, cerium oxide to load on γ-Al
2O
3On the carrier.Its preparation is: with 12.4g (NH
4)
6Mo
7O
24.4H
2O, 2.53g Ce (NO
3)
3.6H
2O is dissolved in the 100mL water, then with dried 50g γ-Al
2O
3Carrier is put into solution and mixed, and stirs solution is evenly absorbed in the micropore of alumina support, and is dry under the room temperature; Then with the catalyst of drying at room temperature 120 ℃ of dryings 4 hours, loaded catalyst was promptly made in 500 ℃ of calcinations in 8 hours, wherein the load capacity of molybdenum oxide is 20% of a carrier quality, the load capacity of cerium oxide is 2% of a carrier quality.
Embodiment 3
Adopt molybdenum oxide, cadmium oxide to load on γ-Al
2O
3On the carrier.Its preparation is: with 6.2g (NH
4)
6Mo
7O
24.4H
2O, 4.8g Cd (NO
3)
2.4H
2O is dissolved in the 100mL water, then with dried 50g γ-Al
2O
3Carrier is put into solution and mixed, and stirs solution is evenly absorbed in the micropore of alumina support, and is dry under the room temperature; Then with the catalyst of drying at room temperature 150 ℃ of dryings 4 hours, loaded catalyst was promptly made in 800 ℃ of calcinations in 4 hours, wherein the load capacity of molybdenum oxide is 10% of a carrier quality, the load capacity of cadmium oxide is 4% of a carrier quality.
Claims (4)
1. a loaded catalyst that is used for pyridine synthesis by tetrahydrofurfuryl alcohol is characterized in that the body that this catalyst carries is γ-Al
2O
3, load group/one is MoO
3, load capacity is 5～30% of a carrier quality; Two of load group branch is the oxide of La, Ce or Cd, and load capacity is 0.5～15% of a carrier quality.
2. by the described loaded catalyst of claim 1, it is characterized in that the MoO of catalyst
3Load capacity be 10～20%, the load capacity of the oxide of La, Ce or Cd is 2～10%.
3. supported catalyst preparation method that is used for pyridine synthesis by tetrahydrofurfuryl alcohol, it is characterized in that comprising following process: ammonium molybdate and the nitrate that comprises a kind of La, Ce or Cd are dissolved in the water, be made into the ammonium molybdate solution of mass concentration 2～40% and 0.5～30% nitrate solution, then with dried γ-Al
2O
3Carrier is put into solution and is mixed, and stirs to make solution evenly be absorbed γ-Al
2O
3In the micropore of carrier, dry under the room temperature; Catalyst with drying at room temperature, in 400～800 ℃ of calcinations 4～10 hours, naturally cools to room temperature afterwards and makes catalyst after 0.5～4 hour 100～150 ℃ of dryings then.
4. by the preparation method of the described loaded catalyst of claim 3, it is characterized in that the baking temperature of catalyst is 110～120 ℃, be 2～3 hours drying time, and calcination temperature is 500～600 ℃, and calcination time is 5～8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014046 CN1736587A (en) | 2005-06-28 | 2005-06-28 | Supported catalyst for pyridine synthesis by tetrahydrofurfuryl alcohol and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510014046 CN1736587A (en) | 2005-06-28 | 2005-06-28 | Supported catalyst for pyridine synthesis by tetrahydrofurfuryl alcohol and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1736587A true CN1736587A (en) | 2006-02-22 |
Family
ID=36079655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510014046 Pending CN1736587A (en) | 2005-06-28 | 2005-06-28 | Supported catalyst for pyridine synthesis by tetrahydrofurfuryl alcohol and preparation process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553607A (en) * | 2012-01-06 | 2012-07-11 | 天津大学 | Supported catalyst for synthesizing pyridine and preparation and application methods thereof |
| CN102600844A (en) * | 2012-02-08 | 2012-07-25 | 天津大学 | Ni-NiO/gamma-Al2O3 catalyst for preparing pyridine and pyridine byproducts as well as preparation method |
| CN104888755A (en) * | 2015-06-02 | 2015-09-09 | 安徽工业大学 | Picoline and water steam demethylation catalyst and preparation method thereof |
| CN105618091A (en) * | 2016-03-24 | 2016-06-01 | 天津大学 | Supported catalyst for synthesizing pyridine by tetrahydrofurfuryl alcohol gas-solid phase catalysis and preparation method thereof |
| CN107115858A (en) * | 2017-05-04 | 2017-09-01 | 东北师范大学 | MoO3/CeO2/Al2O3The method of tri compound nanofiber degraded indoor formaldehyde |
-
2005
- 2005-06-28 CN CN 200510014046 patent/CN1736587A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553607A (en) * | 2012-01-06 | 2012-07-11 | 天津大学 | Supported catalyst for synthesizing pyridine and preparation and application methods thereof |
| CN102600844A (en) * | 2012-02-08 | 2012-07-25 | 天津大学 | Ni-NiO/gamma-Al2O3 catalyst for preparing pyridine and pyridine byproducts as well as preparation method |
| CN104888755A (en) * | 2015-06-02 | 2015-09-09 | 安徽工业大学 | Picoline and water steam demethylation catalyst and preparation method thereof |
| CN105618091A (en) * | 2016-03-24 | 2016-06-01 | 天津大学 | Supported catalyst for synthesizing pyridine by tetrahydrofurfuryl alcohol gas-solid phase catalysis and preparation method thereof |
| CN107115858A (en) * | 2017-05-04 | 2017-09-01 | 东北师范大学 | MoO3/CeO2/Al2O3The method of tri compound nanofiber degraded indoor formaldehyde |
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