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Preparation of ruthenium trichloride

A technology of ruthenium trichloride and ruthenium powder, applied in the field of preparing ruthenium trichloride, can solve problems such as the preparation method of ruthenium trichloride disclosed in few documents, and achieve the effects of high yield, effective preparation and simple preparation process

Inactive Publication Date: 2009-06-24
CHINA NAT BLUESTAR GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purposes of ruthenium trichloride is very extensive, but the preparation method of ruthenium trichloride is seldom disclosed

Method used

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  • Preparation of ruthenium trichloride
  • Preparation of ruthenium trichloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Get 10 grams of ruthenium powder and put it into the reactor 2, add 5N hydrochloric acid into the absorption bottle 4-9, and add 10% by weight sodium hydroxide solution into the absorption bottle 10-11. First check whether the whole system is normal: reactor 2, empty bottle 3, absorption bottle 4-11, buffer bottle 12, vacuum pump 13. Then start the vacuum pump 13, close the vent valve 14, check whether each absorption bottle is bubbling, and adjust the vacuum degree to reach 100mmHg.

[0030] Add 500 milliliters of sodium hypochlorite solution in reactor 2, start heating with electric furnace 1, keep the temperature of the reactor at 50°C, the solution in the reactor is brownish black, after reacting for 30 minutes, slowly add 9N H 2 SO 4 The solution is in reactor 2 (feed from the bottom), and the color of the solution becomes lighter, accompanied by a large amount of golden yellow RuO 4 Gas escapes, stop adding H at this time 2 SO 4 , to be RuO 4 After steaming, ...

Embodiment 2

[0033] Get 8 grams of ruthenium powder and drop into reactor 2, add 6N hydrochloric acid and 0.5% by weight ethanol (based on the total weight of hydrochloric acid and ethanol) in the absorption bottle 4-9, add 15% by weight sodium hydroxide in the absorption bottle 10-11 solution. First check whether the whole system is normal: reactor 2, empty bottle 3, absorption bottle 4-11, buffer bottle 12, vacuum pump 13. Then start the vacuum pump 13, close the vent valve 14, check whether each absorption bottle is bubbling, and adjust the vacuum degree to reach 80mmHg.

[0034] Add 600 milliliters of sodium hypochlorite solution in reactor 2, start heating with electric furnace 1, keep the temperature of the reactor at 60°C, the solution in the reactor is brownish black, after reacting for 40 minutes, slowly add 8N H 2 SO 4 The solution is in reactor 2 (feed from the bottom), and the color of the solution becomes lighter, accompanied by a large amount of golden yellow RuO 4 Gas esc...

Embodiment 3

[0037] Get 12 grams of ruthenium powder and drop into reactor 2, add 7N hydrochloric acid and 1.0% by weight ethanol (based on the total weight of hydrochloric acid and ethanol) in the absorption bottle 4-9, add 12% by weight of hydroxide in the absorption bottle 10-11 sodium solution. First check whether the whole system is normal: reactor 2, empty bottle 3, absorption bottle 4-11, buffer bottle 12, vacuum pump 13. Then start the vacuum pump 13, close the vent valve 14, check whether each absorption bottle is bubbling, and adjust the vacuum degree to reach 130mmHg.

[0038] Add 1000 ml of sodium hypochlorite solution in reactor 2, start heating with electric furnace 1, keep the temperature of the reactor at 70°C, the solution in the reactor is brownish black, after reacting for 50 minutes, slowly add 10N H 2 SO 4 The solution is in reactor 2 (feed from the bottom), and the color of the solution becomes lighter, accompanied by a large amount of golden yellow RuO 4 Gas escap...

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Abstract

The invention discloses a method for preparing ruthenium trichloride. The method comprises the following steps that: a, ruthenium powder and sodium hypochlorite react, and a solution is brownish-black; b, the solution generated in the step a is added with sulphuric acid for reaction to generate golden yellow RuO4 gas; c, the RuO4 gas generated in the step b is introduced to a hydrochloric acid solution for reaction to generate ruthenium trichloride, and the step a and the step b are repeated till the solution is colorless and transparent; and finally, the obtained ruthenium trichloride solution is evaporated and crystallized. The preparation method has a simple process, can effectively prepare ruthenium trichloride and has high yield of a finished product; and the yield can reach 95 percent above.

Description

technical field [0001] The invention relates to a method for preparing ruthenium trichloride. Background technique [0002] Ruthenium trichloride is an important inorganic substance, which can react with many reagents to form various complexes, and is also the starting material for the preparation of many ruthenium complexes. As a catalyst for hydrogen and other reactions, ruthenium trichloride can also be used for the determination of sulfite, the manufacture of chlororuthenate, and as an electrode coating material. [0003] The use of ruthenium trichloride is very extensive, but there are few documents disclosing the preparation method of ruthenium trichloride. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a novel method for preparing ruthenium trichloride, which has a high yield of ruthenium trichloride and simple process. [0005] For solving the problems of the technologies described above, the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G55/00
Inventor 陆崖青刘怡于昕张良虎王荣君王锐刘士华
Owner CHINA NAT BLUESTAR GRP CO LTD
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