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CATALYTIC MULLITIZATION OF KAOLINITE BY METALLIC OXIDE *
Author(s) -
PARMELEE C. W.,
RODRIGUEZ ANTONIO R.
Publication year - 1942
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1942.tb14286.x
Subject(s) - hydrofluoric acid , kaolinite , mullite , magnesium , zinc , inorganic chemistry , titanium , oxide , chemistry , metal , potassium , manganese , catalysis , boric acid , materials science , nuclear chemistry , mineralogy , metallurgy , ceramic , biochemistry , organic chemistry
A bstract The effect of the addition of various oxides on the mullitization of kaolinite was studied by chemical, microscopic, and X‐ray methods. A comparative study of the chemical and the X‐ray methods of mullite determination has shown that the chemical method (use of hydrofluoric acid) can yield only relative values. The use of X rays appears to give absolute results. The oxides of zinc, lithium, magnesium, iron, manganese, and molybdenum were found to be good mullite builders; sodium, potassium, titanium, and stannic oxides were poor; and boric oxide and calcium oxide were fair accelerators.