CN103301837A - Method for preparing aluminum oxide loaded ruthenium catalyst - Google Patents
Method for preparing aluminum oxide loaded ruthenium catalyst Download PDFInfo
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- CN103301837A CN103301837A CN2013102242424A CN201310224242A CN103301837A CN 103301837 A CN103301837 A CN 103301837A CN 2013102242424 A CN2013102242424 A CN 2013102242424A CN 201310224242 A CN201310224242 A CN 201310224242A CN 103301837 A CN103301837 A CN 103301837A
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- aluminum oxide
- alumina
- ruthenium catalyst
- based catalyst
- load ruthenium
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Abstract
The invention discloses a method for preparing an aluminum oxide loaded ruthenium catalyst. The method comprises the steps of: heating an aluminum oxide carrier; adding an assistant to the surface of the aluminum oxide carrier; further heating the aluminum oxide carrier; and stopping heating when the pH value of the surface of the aluminum oxide carrier is 7.6-8, so as to obtain the aluminum oxide load ruthenium catalyst. In the manner, the method for preparing the aluminum oxide load ruthenium catalyst provided by the invention is simple in preparation process; the production time can be shortened; the material and manpower costs are reduced; the production cost is greatly reduced; the obtained aluminum oxide load ruthenium catalyst is low in temperature and pressure, high in activity, unconspicuous inhibitional effect from ammonia, and good in stability and selectivity.
Description
Technical field
The present invention relates to petrochemical industry, particularly relate to a kind of preparation method of alumina load ruthenium-based catalyst.
Background technology
Catalyst is also referred to as catalyst, it is a kind of chemical reaction rate that in chemical reaction, can change other materials, both chemical reaction rate can be improved, also chemical reaction rate can be reduced, and the material that the quality of itself and chemical property all do not change before and after chemical reaction.Catalyst has plenty of single compound, has plenty of complex compound, has plenty of mixture.Catalyst is also selective, and the used catalyst of different reactions is different, and same reaction also has the catalyst of different-effect.
At present in the industrialized Ru-Zn alloy catalyst, utilization rate to ruthenium is lower, and expensive, very responsive to elements such as S, Pd, As, and alumina load type ruthenium-based catalyst can reduce the consumption of noble ruthenium greatly, but because there is more acid centre in alumina surface, therefore the alumina load ruthenium-based catalyst is active relatively low, and production cost is larger.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of preparation method of alumina load ruthenium-based catalyst, the product excellent catalytic effect that the method makes.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of preparation method of alumina load ruthenium-based catalyst is provided, comprises that step is:
(1) with the alumina support heating, adds auxiliary agent toward the surface of described alumina support;
(2) continue described alumina support heating, when the pH of described alumina carrier surface value was 7.6-8, stopped heating obtained the alumina load ruthenium-based catalyst.
In a preferred embodiment of the present invention, the auxiliary agent that adds described in the step (1) is potassium or boron.
In a preferred embodiment of the present invention, heating-up temperature is 200-250 ℃ described in the step (2).
In a preferred embodiment of the present invention, the pH value of alumina carrier surface is 7.8 described in the step (2).
The invention has the beneficial effects as follows: the preparation method of alumina load ruthenium-based catalyst of the present invention, the method preparation process is simple, the time of producing can be shortened, reduce raw material and artificial cost, production cost is reduced greatly, the alumina load ruthenium-based catalyst low-temp low-pressure activity that obtains is high, is subjected to the inhibitory action of ammonia not obvious, stability and selectively good.
The specific embodiment
The below is described in detail preferred embodiment of the present invention, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
Embodiment one:
A kind of preparation method of alumina load ruthenium-based catalyst is provided, comprises that step is:
(1) with the alumina support heating, adds the auxiliary agents such as palladium toward the surface of described alumina support;
(2) continue described alumina support heating, heater is set to 245 ℃, when the pH of described alumina carrier surface value is 7.7, and stopped heating, obtain the alumina load ruthenium-based catalyst, between the specific area of wherein said alumina support and surface alkalinty and the sintering temperature relation is arranged.
Embodiment two:
A kind of preparation method of alumina load ruthenium-based catalyst is provided, comprises that step is:
(1) with the alumina support heating, adds the auxiliary agents such as potassium, palladium toward the surface of described alumina support;
(2) continue described alumina support heating, heater is set to 220 ℃, and when the pH of described alumina carrier surface value was 7.8, stopped heating obtained the alumina load ruthenium-based catalyst.
The preparation method of the alumina load ruthenium-based catalyst that the present invention discloses, the activity of oxide carried ruthenium-based catalyst is that Acidity of Aikalinity is relevant with the electronegativity of oxide carrier itself, the electronegativity of carrier is less to be that alkalescence is stronger, the activity of catalyst is higher, therefore, the alumina load ruthenium-based catalyst is active relatively low.But, aluminium oxide is as a kind of carrier commonly used, and the characteristics such as have that specific area is higher, stable chemical nature and mechanical strength are good are by adding the modification such as auxiliary agent K, Ba or alumina support being improved, reduce its surface acidity, improve the activity of alumina load ruthenium-based catalyst.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention to do, or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (4)
1. the preparation method of an alumina load ruthenium-based catalyst is characterized in that, comprises that step is:
(1) with the alumina support heating, adds auxiliary agent toward the surface of described alumina support;
(2) continue described alumina support heating, when the pH of described alumina carrier surface value was 7.6-8, stopped heating obtained the alumina load ruthenium-based catalyst.
2. the preparation method of alumina load ruthenium-based catalyst according to claim 1 is characterized in that, the auxiliary agent that adds described in the step (1) is potassium or boron.
3. the preparation method of alumina load ruthenium-based catalyst according to claim 1 is characterized in that, heating-up temperature is 200-250 ℃ described in the step (2).
4. the preparation method of alumina load ruthenium-based catalyst according to claim 1 is characterized in that, the pH value of alumina carrier surface is 7.8 described in the step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102242424A CN103301837A (en) | 2013-06-07 | 2013-06-07 | Method for preparing aluminum oxide loaded ruthenium catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102242424A CN103301837A (en) | 2013-06-07 | 2013-06-07 | Method for preparing aluminum oxide loaded ruthenium catalyst |
Publications (1)
| Publication Number | Publication Date |
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| CN103301837A true CN103301837A (en) | 2013-09-18 |
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| CN2013102242424A Pending CN103301837A (en) | 2013-06-07 | 2013-06-07 | Method for preparing aluminum oxide loaded ruthenium catalyst |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482910A (en) * | 1994-07-05 | 1996-01-09 | Uop | Process for preparing a hydrocarbon conversion catalyst |
| CN1446625A (en) * | 2003-03-06 | 2003-10-08 | 复旦大学 | Benzene selection noncrystalline catalyst with hydrogen added and containing ruthenium, boron as well as its preparing method |
| CN1506300A (en) * | 2002-12-12 | 2004-06-23 | 中国科学院大连化学物理研究所 | Ruthenium-based catalyst for decomposing ammonia to prepare mixed H2-N2 gas and its prepn |
| CN1535942A (en) * | 2003-04-09 | 2004-10-13 | 中国石油化工股份有限公司 | Preparation method of Ru-B load type catalyst |
-
2013
- 2013-06-07 CN CN2013102242424A patent/CN103301837A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482910A (en) * | 1994-07-05 | 1996-01-09 | Uop | Process for preparing a hydrocarbon conversion catalyst |
| CN1506300A (en) * | 2002-12-12 | 2004-06-23 | 中国科学院大连化学物理研究所 | Ruthenium-based catalyst for decomposing ammonia to prepare mixed H2-N2 gas and its prepn |
| CN1446625A (en) * | 2003-03-06 | 2003-10-08 | 复旦大学 | Benzene selection noncrystalline catalyst with hydrogen added and containing ruthenium, boron as well as its preparing method |
| CN1535942A (en) * | 2003-04-09 | 2004-10-13 | 中国石油化工股份有限公司 | Preparation method of Ru-B load type catalyst |
Non-Patent Citations (2)
| Title |
|---|
| AIKA等: "Support and Promoter effect of Ruthenium Catalyst. III. Kinetics of Ammonia Synthesis over Various Ru Catalysts", 《APPLIED CATALYSIS》, vol. 28, 15 December 1986 (1986-12-15), pages 57 - 68 * |
| 张新波等: "氧化铝负载钌基氨合成催化剂的制备条件及载体改性", 《催化学报》, vol. 23, no. 3, 29 May 2005 (2005-05-29), pages 208 - 211 * |
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Application publication date: 20130918 |