摘要
在硅灰石酸处理中加入非离子表面活性剂聚乙二醇 (平均相对分子质量 6 0 0 0 ) ,可制得 5 0 0～ 6 0 0m2 /g的多孔二氧化硅。对加与不加聚乙二醇所得产物进行比较 ,发现加聚乙二醇所得产物比表面积更大。平均相对分子质量不同的聚乙二醇对产物的比表面积影响不同。
When nonionic surfactant PEG is added into the reaction s ystem of wollastonite and hydrochloric acid,porous silica has specific surface a rea about 500-600 m\+2/g can be produced.The writer has studied the different pr oducts produced by adding PEG or not and the reaction mechanism.It is discovered that using PEG with different average molecular weights,the specific surface ar eas of the products are different.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2000年第10期570-571,580,共3页
Fine Chemicals
基金
江西省自然科学基金资助项目!(975 0 15 )&&
