New method for preparing ruthenium nitrosylnitrate solid

A technology of ruthenium nitrosyl nitrate and sodium nitrite, which is applied in the field of preparing solid ruthenium nitrosyl nitrate, can solve the problems of inconvenient use and transportation, and achieve the effect of simple operation and high purity

Active Publication Date: 2011-08-31
KUNMING INST OF PRECIOUS METALS
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  • Abstract
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AI Technical Summary

Benefits of technology

This patented technology allows for efficient manufacturing of pure ruthium oxynitride with very good quality at an affordable cost. It involves producing it through a specific chemical reaction called ruthiunnitrooxyacid or Ruthenic Acids that produces highly reactive oxygen radicals from ammonia gas. These free radicals then react quickly form stable compounds containing atomic rhenium.

Problems solved by technology

This patents describes different ways to make pure metal oxides like platinum (Pt), rhodium (Rh). These materials can be used with various chemical processes including those involving carbon monoxide reduction reaction (CO_2). However, these techniques have limitations when making them into industrial products because they require expensive starting metals. Therefore, researchers aimed towards developing new types of rhenium based catalysis called ruthenic nitrosonitride (RuNbONa)).

Method used

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  • New method for preparing ruthenium nitrosylnitrate solid
  • New method for preparing ruthenium nitrosylnitrate solid

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Embodiment Construction

[0009] (1) Nitrosyl ruthenium chloride Ru(NO)Cl 3 preparation of

[0010] Dissolve 150g of ruthenium trichloride hydrate in 1050mL of 1mol / L hydrochloric acid solution, heat to reflux, add 750mL of an aqueous solution containing 116g of sodium nitrite dropwise, along with reddish-brown gas NO 2 The release of the solution changed from deep red to deep purple, and the reaction was continued for 4 hours, and the water was distilled off to obtain a solid mixture. Dissolve Ru(NO)Cl in absolute ethanol 3 , filtered to remove NaCl insoluble in ethanol, and the filtrate was evaporated to recover ethanol to obtain ruthenium nitrosyl chloride Ru(NO)Cl 3 146.5 grams.

[0011] (2) Ru(NO)(NO 3 ) 3 preparation of

[0012] Get 148.5 grams of ruthenium nitrosyl chloride, be dissolved in 1000ml of water, add the silver solution that contains 365g of nitric acid, stir, heat and reflux reaction for 5 hours, the reaction solution is visually inspected with NaCl for no free silver ions. Re...

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Abstract

The invention discloses a new method for preparing ruthenium nitrosylnitrate solid. The method comprises the following steps of: (1) reacting ruthenium trichloride and sodium nitrite to synthesize ruthenium nitrosylchloride intermediate; (2) reacting the intermediate and silver nitrate to obtain ruthenium nitrosylnitrate solution; and (3) extracting the ruthenium nitrosylnitrate by using diethyl ether, and evaporating the diethyl ether by using extraction liquid to obtain the ruthenium nitrosylnitrate solid. The method is high in yield, is easy to operate and control, and is suitable for large-scale production, and the product has high purity and low impurity content.

Description

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Claims

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Application Information

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Owner KUNMING INST OF PRECIOUS METALS
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