Patent ID: 8182581
Filing Date: 2012-05-22
Classification: B01J,C07C,C07D,C07F

Abstract:
1. A method of separating one chemical from a mixture of chemicals comprising the steps of: providing a mixture of at least one first and at least one second chemical, exposing said mixture to at least one capillary column and at least one diionic liquid salt adsorbed, absorbed or immobilized thereon, wherein the diionic liquid salt comprises at least one di-cation of the formula: and at least one counter anion; wherein: when A and A′ are both substituted imidazolium, at least one of A and A′ is substituted with a group that facilitates cross-linking and/or immobilization; and and retaining at least a portion of said first chemical on said solid support capillary column for some period of time.