The results showed that when mass ratio of KI to DNS is 0.4%, the selectivity of the hydrogenation could be enhanced obviously and the purity of the product could come up to 99.4%, the yield of DSD acid is 97.4%.

• 结果表明；当KI用量为原料质量的0.；4%25时；可显著提高催化加氢反应的选择性；制得产物的纯度(质量分数)为99