Calcination of xérogels?

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Yuri Mirgorod

Xerogel is calcined to constant weight.

Best regards.

Allouche Sidali

Thank's

What do you mean by constant weight???

Mohamed Abd El-Aal

Dear Allouche,

You must first do Thermal analysis of your product, after that form the result you will know the suitable calcination temperature. it will be the temperature that your product mass loss is stable. Best Regards

When calcining the xerogel loses weight. When the impurities are removed, the weight is constant.

Suliman Elhadi

That means when you do the thermal analysis of your gel there was no losses in the weight and you can known that from the data of (as ex TG-DTA) curve.