A kind of synthetic method of iridium acetate

Abstract

The invention discloses a synthesis method of iridium acetate. The method comprises: 1. dissolving iridium trichloride in water to form iridium trichloride solution and heating; 2. dissolving silver acetate in acetic acid solution to form silver acetate solution, Then silver acetate solution is added dropwise in the heated iridium chloride solution, reflux reaction under constant temperature, obtains the slurry that contains precipitation; 3, filter slurry to obtain filtrate and filter residue, wash filter residue with water and wash liquid into the filtrate to obtain the mother liquor, and then the mother liquor is successively concentrated and dried to obtain iridium acetate. The invention does not need to melt the iridium powder with alkali, directly transfers the iridium-containing raw material into the liquid reaction system, and synthesizes iridium acetate through one-step reaction, which overcomes the problem of insufficient reaction caused by the limited solubility of iridium in the traditional process, and has no adverse side reactions. The purity of the method is high, the conversion rate of iridium acetate is greatly improved, and the method is simple, the process is easy to control, the pollution to the environment is small, and it is suitable for industrialization.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a synthesis method of iridium acetate. Background technique [0002] Iridium acetate, also known as iridium acetate, is mainly used as an active catalyst for coal chemical industry, petrochemical industry and acetic acid production. At present, the technology of domestic production of acetic acid mainly uses rhodium iodide as a catalyst. Because the price of rhodium is relatively high, the catalyst production cost of this technology is too high. Because iridium acetate has the same performance and activity, the new acetic acid production process in China uses iridium acetate as the catalyst instead, and the demand for iridium acetate products in the market is also increasing. [0003] The traditional process of synthesizing iridium acetate is as follows: the iridium powder is sequentially subjected to alkali fusion, leaching, precipitation, sodium removal,...

AI Technical Summary

Problems solved by technology

The method uses iridium trichloride as the raw material, without the need of alkali-melting iridium powder, directly transfers the iridium-containing raw material into the liquid reaction system, and the product can be obtained through one-step reaction and simple post-treatment, which overcomes the iridium dissolution in the traditional iridium acetate synthesis process Insufficient reaction caused by limited stability, and no adverse side reactions, high product purity, while greatly improving the conversion rate of iridium acetate