研究了硫酸加压溶解法从氧化铝基含铂废催化剂中回收铂。在高压釜中，反应温度130℃，压力4.5 kg/cm2，时间4 h，氧化铝载体的溶解效率较好；添加TiCl3溶液可将分散到溶液中的铂浓度降低至0.0005 g/L以下；富集物经溶解-精炼得到纯度大于99.98%的海绵铂，铂直收率为98.71%。
A method of sulfuric acid pressure dissolution to recover platinum from the waste alumina-based catalysts was studied. The selective dissolution was carried out in the autoclave for 4 h at a temperature of 130℃and under pressure of 4.5 kg/cm2, producing a desired result. Platinum dissolved in the solution could be reduced to a concentration of less than 0.0005 g/L by adding TiCl3 as a reductant. Sponge platinum with a purity of 99.98%was obtained from insoluble substance after the melting-refining process, and the direct recovery of platinum was up to 98.71%.
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