activated earth

In the refining process of oils, 2%~ 5% activated bleaching earth usually is used. If the spent bleaching earth can not be treated in time, it will pollute the environment.

油脂精炼过程中，通常使用油重2%～5%的活性白土进行吸附脱色，脱色后的废白土若处理不及时，会造成环境污染。

The main products are casting earth, mud earth and activated white earth.

主要产品有铸造土 、 泥浆土、活性白土.

Synthesis of Dimer Acids by Granular Activated Bleaching Earth

粒状活性白土催化合成二聚酸的研究

Dimer acids was synthesized from soybean oil fatty acid by granular activated bleaching earth. The influence factors on the yield of the reaction, such as the amount of catalyst, reaction temperature and reaction time were investigated.

以粒状活性白土为催化剂，对大豆油脂肪酸为原料催化合成二聚酸进行了研究，考察了催化剂、反应温度、时间等因素对反应的影响。