METHOD OF OBTAINING FINE CRYSTALLINE ALLOYED LANTHANUM ALUMINATE Russian patent published in 2008 - IPC C01F7/04 C01F17/00 

Abstract RU 2340558 C2

FIELD: chemistry.

SUBSTANCE: mixture of aluminum hydroxide, lanthanum oxide and alloying additives is subjected to thermal processing in water vapour in autoclave in two stages. First stage is carried out in temperature interval 180-250°C, and the second - in temperature interval 390-450°C. As alloying additives oxides or salts of elements, selected from line: Mg, Cr, Eu, Ce in amount from 0.001 to 2% weight from lanthanum aluminate weight are used.

EFFECT: obtaining lanthanum aluminate with low water content, alloyed, magnesium, chrome, europium or cerium.

3 dwg, 6 ex

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RU 2 340 558 C2

Authors

Danchevskaja Marina Nikolaevna

Ivakin Jurij Dmitrievich

Torbin Sergej Nikolaevich

Dates

2008-12-10Published

2006-12-29Filed