The present invention relates to a carbon sorbent the can selectively remove platinum-group metals and other heavy metals such as tin without co-removing organic synthesis products including pharmaceutical intermediates and finished Active Pharmaceutical Ingredients (APIs). The carbon sorbents of the present invention are made from low-cost, high purity starting materials and the resulting carbon sorbents are also very pure. The carbon sorbents possess a combination of certain nitrogen and phosphorous groups combined with mesoporosity (2 to 50 nm diameter pores) that proves the high metal adsorption.
本发明涉及一种碳吸附剂,它可以选择性地去除
铂族
金属和其他重
金属,如
锡,而不会同时去除有机合成产物,包括医药中间体和活性药物成分(A
PI)成品。本发明的碳吸附剂由低成本、高纯度的起始材料制成,所得碳吸附剂的纯度也非常高。碳吸附剂具有某些氮和
磷基团的组合以及中孔隙度(孔径为 2 至 50 纳米),这证明了其对
金属的高吸附性。