公开(公告)号：US06248911B1

公开(公告)日：2001-06-19

申请号：US09134445

申请日：1998-08-14

申请人： Carlos E. Canessa ,  Adam J. Brozzetti

发明人： Carlos E. Canessa ,  Adam J. Brozzetti

IPC分类号： C07C5147

CPC分类号： C11B3/001 ,  C11B3/10

摘要： A process and composition for removing trace contaminants from glyceride oils utilizes a metal-substituted silica xerogel having a pH of at least 7.5 to adsorb at least a portion of the contaminants. The process of the invention includes contacting a glyceride oil with such an adsorbent and then separating the adsorbent from the contaminant-depleted glyceride oil, for example, by filtration. The composition of the present invention includes a metal-substituted silica xerogel having a pH of at least 7.5 and an organic acid blended with the xerogel. Preferably, the organic acid is citric acid. Contaminants which can be removed from glyceride oils during the refinement of such oils by the adsorbent include phospholipids, soaps, detrimental metals, and chlorophyll.

摘要翻译： 用于从甘油酯油中除去痕量污染物的方法和组合物使用pH至少为7.5的金属取代二氧化硅干凝胶来吸附至少一部分污染物。 本发明的方法包括使甘油酯油与这种吸附剂接触，然后例如通过过滤将吸附剂与污染物贫乏的甘油酯油分离。 本发明的组合物包括pH至少为7.5的金属取代二氧化硅干凝胶和与干凝胶共混的有机酸。 优选地，有机酸是柠檬酸。 在通过吸附剂精制这种油的过程中，可以从甘油酯油中除去的污染物包括磷脂，肥皂，有害金属和叶绿素。