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Effect of inorganic salt impurities on seeded precipitation of silica hydrate from sodium silicate solution
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作者 Xiao-bin LI Xiao-bing GAO +5 位作者 Qiu-sheng ZHOU Yi-lin WANG Tian-gui QI Lei-ting SHEN Gui-hua LIU Zhi-hong PENG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2024年第9期3016-3028,共13页
To clarify the precipitation of silica hydrate from the real desilication solutions of aluminosilicate solid wastes by adding seeds and improve integrated waste utilization,the seeded precipitation was studied using s... To clarify the precipitation of silica hydrate from the real desilication solutions of aluminosilicate solid wastes by adding seeds and improve integrated waste utilization,the seeded precipitation was studied using synthesized sodium silicate solution containing different inorganic salt impurities.The results show that sodium chloride,sodium sulfate,sodium carbonate,or calcium chloride can change the siloxy group structure.The number of high-polymeric siloxy groups decreases with increasing sodium chloride or sodium sulfate concentration,which is detrimental to seeded precipitation.Calcium chloride favors the polymerization of silicate ions,and even the chain groups precipitate with the precipitation of high-polymeric sheet and cage-like siloxy groups.The introduced sodium cations in sodium carbonate render a more open network structure of high-polymeric siloxy groups,although the carbonate ions favor the polymerization of siloxy groups.No matter how the four impurities affect the siloxy group structure,the precipitates are always amorphous opal-A silica hydrate. 展开更多
关键词 ALUMINOSILICATE sodium silicate solution siloxy group IMPURITY silica hydrate
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Carbon-oxygen bond formation via visible-light-induced O-H insertion between acylsilanes and oximes
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作者 Bao Gui Cai Qian Li +1 位作者 Lei Li Jun Xuan 《Green Synthesis and Catalysis》 2022年第2期194-197,共4页
Visible light promoted C-O bond formation reaction through O-H insertion of acylsilanes with oximes has been developed.The reaction occurred under mild reaction conditions(sole blue LED irradiation in the absence of a... Visible light promoted C-O bond formation reaction through O-H insertion of acylsilanes with oximes has been developed.The reaction occurred under mild reaction conditions(sole blue LED irradiation in the absence of any catalysts or additives)with a short reaction time and afforded the corresponding oxime ethers in moderate to good yields. 展开更多
关键词 Visible light ACYLSILANES siloxy carbene OXIMES C-O bond formation
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