INORGANICCHEMICALSINDUSTRY ›› 2016, Vol. 48 ›› Issue (2): 53-.
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ZHOU Jian-Min, CHEN Yu-Ning, TAN Li-Quan, LI Ze-Sheng, NIU Xian-Chun
Online:
Published:
Abstract: Using the oil shale ash in Maoming,Guangdong as the raw material,nano-silica was prepared by acid leaching process.The effect of parameters of alkaline leaching process on yield of silica was particularly studied,and the optimum conditions were obtained:concentration of NaOH was 3 mol/L,amount-of-substance ratio of NaOH to SiO2 was 4∶1,leaching time was 4 h,and leaching temperature was 90 ℃.Under the optimal conditions,the yield of silica was 63.79% and the size of silica was 54 nm.The quality of prepared product could meet the requirement of the standard of HG/T 3061—1999.
Key words: oil shale ash, nano-sized silica, acidic method, alkaline leaching, yield
CLC Number:
TQ127.2
ZHOU Jian-Min, CHEN Yu-Ning, TAN Li-Quan, LI Ze-Sheng, NIU Xian-Chun. Study on process of alkaline leaching for acidic preparation of nano-silica by oil shale ash[J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(2): 53-.
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