NOVEL OXIDE MATERIALS AND SYNTHESIS BY FLUORIDE/CHLORIDE ANION PROMOTED EXFOLIATION

摘要

The present invention is directed to the synthesis of novel delaminated layered zeolite precursor materials prepared by fluoride/chloride anion-promoted exfoliation. The method comprises, for example, using a combination of fluoride and chloride anions at a mild pH in a non-aqueous solution to affect delamination of a layered zeolite precursor, generally comprising an organic solvent. The method may be used in conjunction with either acidification or sonication, or both. The resulting delaminated zeolite precursors are then isolated. Precursors that are then isolated lack amorphous silica content. The UCB-1 product is an example of such a novel oxide material and is obtained in yields in excess of 90% without the need for sonication.

主权项

1. A method of preparing an exfoliated layered zeolite precursor material comprising preparing a non-aqueous mixture of chloride and fluoride anions comprising an organic solvent and a layered oxide material to be delaminated, maintaining the mixture at a temperature in the range of 50-150° C. for a length of time sufficient to effect the desired delamination; and then recovering the delaminated oxide material.