Quasi-crystalline boehmites containing additives
AssigneeAlbemarle Netherlands B. V.
InventorsDennis Stamires, Paul O'Connor, Gregory Pearson, William Jones
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Abstract
The present invention pertains to a quasi-crystalline boehmite containing additive in a homogeneously dispersed state. Suitable additives are compounds containing elements selected from the group of alkaline earth metals, alkaline metals, rare earth metals, transition metals, actinides, silicon, gallium, boron, titanium, and phosphorus. Said QCBs according to the invention may be prepared in several ways. In general, a quasi-crystalline boehmite precursor and an additive are converted to a quasi-crystalline boehmite containing the additive in a homogeneously dispersed state.
Claims72
A composition comprising quasi-crystalline boehmite and an additive present in a homogeneously dispersed state, said additive being selected from the group consisting of alkaline earth metals, transition metals, actinides, noble metals, gallium, boron, phosphorus, silicon, metal oxides, hydroxides, mixed oxides, clays, zeolites, spinels, perovskites, organic and inorganic acids and salts and mixtures thereof, and said quasi-crystalline boehmite having a peak width at half length of the maximum intensity of the (020) XRD reflection of 1.5 or greater than 1.5 degrees 2-theta.
The process of clam, 30 wherein said seeds comprise sodium-aluminum-silicates used in the formation of synthetic zeolites.
Dependencies are inferred from the claim text.