| 二氧化硅负载磷钨酸催化甘油与丙酮的缩合反应 |
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| 引用本文： | 任立国,张晓丽,高文艺.二氧化硅负载磷钨酸催化甘油与丙酮的缩合反应[J].辽宁石油化工大学学报,2011,31(4):9-13. |
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| 作者姓名： | 任立国 张晓丽 高文艺 |
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| 作者单位： | 辽宁石油化工大学化学与材料科学学院,辽宁抚顺,113001 |
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| 摘 要： | 利用溶胶-凝胶法制备了二氧化硅负载的磷钨酸(TPA/SiO2)固体酸催化剂,用XRD和N2-吸附脱附对TPA/SiO2固体酸催化剂进行了表征,研究了催化剂在甘油与丙酮缩合反应中的催化性能,考察了催化剂的焙烧温度、磷钨酸质量分数、反应时间和催化剂质量等对反应性能的影响.结果表明:TPA/SiO2固体酸是平均颗粒为20.9...
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| 关 键 词： | 溶胶-胶凝 TPA/SiO2 固体酸 缩合反应 丙酮甘油缩酮 |
Condensation of Glycerol With Acetone Over the Silica-Supported Phosphotungstic Acid Catalysts |
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| REN Li-guo,ZHANG Xiao-li,GAO Wen-yi.Condensation of Glycerol With Acetone Over the Silica-Supported Phosphotungstic Acid Catalysts[J].Journal of Liaoning University of Petroleum & Chemical Technology,2011,31(4):9-13. |
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| Authors: | REN Li-guo ZHANG Xiao-li GAO Wen-yi |
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| Affiliation: | (School of Chemistry and Material Science,Liaoning Shihua University,Fushun Liaoning 113001,P.R.China) |
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| Abstract: | Silica-supported H3PW12O40catalysts(TPA/SiO2) with different TPA loadings were prepared by sol-gel method and characterized by XRD and N2-adsorption.Their activities in the condensation of glycerol with acetone to produce acetone ketal of glycerol were studied.The effects of calcination temperature of catalyst,TPA loading,catalyst dosage and reaction time were investigated in detail.It is found that the TPA/SiO2 catalyst,with mean grain size of 20.9~26.4 nm in typical amorphous phase,exhibited excellent catalytic activity and good stability for synthesis of acetone ketal of glycerol.The optimal conditions areasfollows:catalystcalcinationtemperature500℃,themassradiooftheTPAloading15.0%,n(acetone)∶n(glycerol)=1∶3,catalyst/glycerol mass ratio 8.0%,cyclohexane 15 mL and reaction time 6.0 h.The yield of Solketal can reach over 93.2% at the optimum conditions. |
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| Keywords: | Sol-gel TPA/SiO2 Solid acid Condensation reaction Solketal |
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