Stabilized crystalline alumina compositions

Details Stabilized crystalline alumina compositions Stabilized crystalline alumina compositions

1997-01-03

1999-03-02

Marcheschi, Michael

Compositions: ceramic

Ceramic compositions

Refractory

501128, 501153, 423601, 423617, 423618, 423625, 4233291, C04B 3510

Patent

active

058771069

ABSTRACT:
New thermally- and hydrothermally-stable .delta.-alumina compositions stabilized with an oxide of silicon, germanium, phosphorus, arsenic or a mixture thereof and methods of preparation of same are provided. Also provided are catalyst supports and catalysts made using these stabilized .delta.-alumina compositions, methods for making same, and methods for treating the exhaust gas from an internal combustion engine using such catalysts.

REFERENCES:
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patent: 4286990 (1981-09-01), Kleinschmit et al.
patent: 4567029 (1986-01-01), Wilson et al.
patent: 4686093 (1987-08-01), Flanigen et al.
patent: 4891197 (1990-01-01), Derouane et al.
patent: 5015615 (1991-05-01), Deller et al.
patent: 5449389 (1995-09-01), Yoshizumi et al.

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