介孔SO4^2-/ZrO2的制备、表征及应用

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摘要：

使用水热合成法,以十六烷基三甲基溴化铵(CTAB)为模板剂,ZrOCl2·8H2O为锆源,水为溶剂,在碱性条件下成功地制备出介孔SO4^2-/ZrO2.通过傅里叶红外光谱分析(FTIR),N2物理吸脱附(BET),透射电镜(TEM),X射线衍射(XRD),氨程序升温脱附(NH3-TPD)手段对其结构进行了表征.结果发现,550℃煅烧后样品的比表面积为179m^2/g,平均孔径为4.1nm;TEM显示样品的孔道呈蠕虫状;NH3-TPD表征发现该催化剂具有超强酸性.该催化剂用于煎炸废油甲酯化反应中生物柴油的制备,具有较高的活性,在200℃下反应6h后的收率能达91%以上.

Using sixteen alkyl three methyl bromide(CTAB)as surface templating agent,zirconium oxychloride octachloride as a source of zirconium and water as solvent,mesoporous SO4^2-/ZrO2 was successfully prepared.The structure was characterized by FTIR analysis,N2 physical adsorption,transmission electron microscopy(TEM),X-ray diffraction(XRD)and ammonia temperature programmed desorption(NH 3-TPD).The results showed that the sample after calcination at 550℃ had a surface area of 179 m^2/g and an average pore diameter of 4.1 nm.TEM showed that the sample was in the form of worms.The NH 3-TPD characterization showed that the catalyst after calcination at 550℃ has super acidity.The catalyst was applied to the preparation of biodiesel frying waste oil methyl esterification reaction.It was found that the catalyst after calcination at 550℃ has higher activity for preparing biodiesel.The yield of the reaction at 200℃ for 6 h reached 91%.

作者：

王云杰袁红刘威张泓

Wang Yunjie;Yuan Hong;Liu Wei;Zhang Hong(School of Chemistry and Chemical Engineering,North Minzu University,Yinchuan 750021,China)

机构地区：

北方民族大学化学与化学工程学院

出处：

《betway官方app 学报：自然科学版》 CAS 北大核心 2020年第1期64-68,共5页

基金：

国家自然科学基金(21266001) 宁夏自然科学基金(NZ17094) 宁夏科技创新领军人才计划项目(KJT2017006).

关键词：

介孔 SO4^2-/ZRO2 固体超强酸甲酯化

mesoporous sulfated zirconia solid superacid methyl esterification