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《Journal of Chongqing University of Technology(Natural Science)》 2012-02
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Study on Point of Zero Charge and Adsorption of the Diatomite

ZHANG Shi-zhi1,WU Li-wa2,CHENG Zhen-min2(1.College of Life Science and Chemistry,Qinghai University for Nationalities,Xining 810007,China;2.State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)  
Diatomite was calcined after pickling with sulfuric acid for purification,and the crude diatomite and purified diatomite were characterized by scanning electron microscopy and energy dispersive X—ray analysis.The point of zero charge(PZC) for the diatomite was measured by three methods:potentiometric titration,mass titration and inert electrolyte titration.The results showed that the specific surface area of diatomite increases remarkably,the PZC independent of electrolyte concentration exists and the adsorption capacity of the diatomite on ethylene improved effectively.
【CateGory Index】: P573
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 Wang Lijian Zheng Shuilin Chen Juntao Shu Feng(School of Chemical and Environmental Engineering Beijing Campus,China University of Mining and Technology,Beijing 100083);Study on Purification & Adsorption of Diatomite[J];Non-Metallic Mines;2006-02
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