典型文献
Synthesis of silica powder with high pore volume by skeleton reinforcement
文献摘要：
In this paper,a method composed of gelation of basic skeleton(first step)and skeleton reinforcement process(second step)was introduced to synthesize silica powder with high pore volume through the reaction between water glass and sulfuric acid.No organic solvents were involved in the entire prepara-tion process and the final product was collected by spray drying.The effect of concentration of base solu-tion,gelation point pH value and skeleton reinforcement time on the BET specific surface area and pore volume of the prepared silica powder were investigated intensively.The results show that,a basic skele-ton with good dispersibility and high porosity was obtained when the concentration of base solution was 0.1 mol·L-1 and the gelation pH value reached 6.5.Then the basic skeleton grew into a more uniform por-ous structure after 30 min skeleton reinforcement.Under these optimum conditions,silica powder pre-pared by skeleton reinforcement method had a BET specific surface area of 358.0 m2·g-1,and its pore volume reached 2.18 cm3·g-1,which was much higher than that of prepared by skeleton-free method(1.62 cm3·g-1)and by direct gelation method(0.31 cm3·g-1).
文献关键词：
中图分类号：
作者姓名：
Hongwei Shan;Xiaodong Zhou;Hao Jiang;Yanjie Hu;Haibo Jiang;Chunzhong Li
作者机构：
Shanghai Engineering Research Center of Hierarchical Nanomaterials,Key Laboratory for Ultrafine Materials of Ministry of Education,School of Chemical Engineering,East China University of Science&Technology,Shanghai 200237,China;State Key Laboratory of Chemical Engineering,School of Chemical Engineering,East China University of Science&Technology,Shanghai 200237,China;School of Materials Science and Engineering,East China University of Science&Technology,Shanghai 200237,China
文献出处：
引用格式：
[1]Hongwei Shan;Xiaodong Zhou;Hao Jiang;Yanjie Hu;Haibo Jiang;Chunzhong Li-.Synthesis of silica powder with high pore volume by skeleton reinforcement)[J].中国化学工程学报（英文版）,2022(02):219-226
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B类：
Synthesis,silica,powder,pore,volume,by,skeleton,reinforcement,In,this,paper,method,composed,gelation,basic,first,step,process,second,was,introduced,synthesize,through,reaction,between,water,glass,sulfuric,acid,No,organic,solvents,were,involved,entire,prepara,final,product,collected,spray,drying,effect,concentration,base,point,value,BET,specific,surface,area,prepared,investigated,intensively,results,show,that,good,dispersibility,porosity,obtained,when,solution,reached,Then,grew,into,more,uniform,ous,structure,after,Under,these,optimum,conditions,had,its,cm3,which,much,higher,than,free,direct
AB值：
0.495749
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