摘要:
The invention relates to a process for the preparation of a modified silica comprising the step of adsorbing at least one polycarboxylic acid on precipitated silica.
摘要:
Precipitated silica having a BET specific surface area in the range of from 35-700 m2/g, a CTAB specific surface area in the range of from 30 to 400 m2/g, and a content of polycarboxylic acid and/or carboxylate groups, expressed as total carbon content, of at least 0.15 wt %