Process for preparation of aluminum borate whisker

Details Process for preparation of aluminum borate whisker Process for preparation of aluminum borate whisker

1989-12-19

1991-11-12

Lewis, Michael L.

Chemistry of inorganic compounds

Boron or compound thereof

Oxygen containing

156DIG61, 156DIG112, 423277, 501 95, C01B 3512, C03C 3145

Patent

active

050646311

ABSTRACT:
A mixture comprising (i) an oxide, hydroxide or oxyhydroxide of aluminum, (ii) an aluminum-containing sulfate, (iii) an oxide or oxyacid of boron or an alkali metal salt thereof and (iv) an alkali metal sulfate is heated at a temperature of 900 to 1200.degree. C. to grow an aluminum borate whisker. In this process, the reaction is advanced apparently in the solid phase, and this process is advantageous over the conventional processes in that the yield is high and the isolation and purification of the reaction product is facilitated.

REFERENCES:
patent: 3080242 (1963-03-01), Berry
patent: 3350166 (1967-10-01), Alley et al.
patent: 4774210 (1988-09-01), Ray
patent: 4789422 (1988-12-01), Misra
Bailar et al. Comprehensive Inorganic Chemistry, 1973, pp. 1055-1057.

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