Crystalline rare earth aluminum borates

Details Crystalline rare earth aluminum borates Crystalline rare earth aluminum borates

1989-03-29

1991-08-27

Breneman, R. Bruce

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Boron or compound containing same

423263, 423277, 423279, 585443, 585658, 585444, 585486, 558320, 558327, 2523014R, B01J 2102, C01F 1700, C01B 3512

Patent

active

050433083

ABSTRACT:
The preparation, structure, and properties of solid inorganic materials containing at least one rare earth element, aluminum, boron and oxygen are described. Also described is the use of such materials in catalytic compositions for the conversion of organic compounds. In particular, new materials comprising crystalline LnAl.sub.1.67+0.67X (B.sub.4 O.sub.10)O.sub.X where Ln is at least one Group IIIB element ion having effective ionic radii less than about 0.98 Angstroms at valence 3+ and coordination number VI, and X is a number ranging from 0 to 1, having a characteristic X-ray diffraction pattern are described as well as the use of such materials in various catalyzed processes including oxidative dehydrogenation of hydrocarbons and oxygen-containing hydrocarbons, dehydrogenation to functionalize alkylaromatic compounds, and ammoxidation of alkylaromatic compounds. Also, these new crystalline rare earth aluminum borates exhibit a variety of physical properties that make their use as optical materials attractive, including uses for optical frequency conversion, fluorescence, and laser materials.

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