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Silicon dioxide for stabilizing beer and its production

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TLDR
In this paper, the authors proposed a method to obtain silicon dioxide for stabilizing beer, which gives excellent stabilizing effect without dajnaging the foam property of the beer.
Abstract
PURPOSE: To obtain silicon dioxide for stabilizing beer, which give excellent stabilizing effect without dajnaging the foam property of the beer. CONSTITUTION: Silicon dioxide for stabilizing the beer, which has 500-800m /g specific surface area by BET method, shows pH8.0-9.3 in 5wt.% aq. suspension, is in acid quantity, is obtained by adding simultaneously sodium silicate and a mineral acid into a salt aq. solution under stirring to allow to react with each other at pH3.0-7.0 and 80 deg.C, adjusting the pH of the resulting silica suspension to 3.0-7.0, filtering, washing and dispersing again the resulting silica hydrogel into water and after adjusting the pH to 5.5-8.5, filtering, washing and drying.

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