| http://www.w3.org/ns/prov#value | - The precipitating agent is a solution of lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, cesium hydroxide or a mixture of any of these hydroxides at a normality of between 2 and 4, preferably about 2.5 to 3.5. the normality of the alkali metal hydroxide solution is a very essential feature of the process of preparing the zinc ferrite catalyst.
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