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 aqueous solution to affect delamination of a layered zeolite precursor. The method can also comprise using a combination of fluoride and chloride anions in a non-aqueous solution 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. An oxide material prepared by at least partial delamination of a layered zeolite precursor, with the oxide material lacking an amorphous silica phase, with the oxide material comprising oxides of the formula XO2 and Y2O3, wherein X represents silicon and Y represents a trivalent element, with the atomic ratio of X to Y being greater than 3.