辽宁石油化工大学学报 ›› 2014, Vol. 34 ›› Issue (2): 24-28.DOI: 10.3696/j.issn.1672-6952.2014.02.007

• 石油化工 • 上一篇    下一篇

大孔容r-A l 2O3 的制备研究

杨鹏冲1,韩易潼1,孟秀红1,王海彦1,赵伟林2,吉豪杰3   

  1. ( 1. 辽宁石油化工大学化学化工与环境学部, 辽宁抚顺1 1 3 0 0 1; 2. 中国石油抚顺石化公司石油二厂, 辽宁抚顺1 1 3 0 0 4;
    3. 中国石油抚顺石化公司大乙烯, 辽宁抚顺1 1 3 0 0 4)
  • 收稿日期:2013-06-18 修回日期:2013-11-15 出版日期:2014-04-25 发布日期:2017-07-14
  • 通讯作者: 王海彦( 1 9 6 2 - ) , 男, 博士, 教授, 从事石油化工催化剂与新催化剂材料研究; E - m a i l : f s w h y@1 2 6. c o m。
  • 作者简介:杨鹏冲( 1 9 8 6 - ) , 男, 硕士研究生, 从事石油化工催化剂与新催化剂材料研究; E - m a i l : y a n g. p e n g. c h o n g@1 6 3. c o m。

Preparation of Macroporous γ-Al2O3

Yang Pengchong1, Han Yitong1, Meng Xiuhong1, Wang Haiyan1, Zhao Weilin2, Ji Haojie3   

  • Received:2013-06-18 Revised:2013-11-15 Published:2014-04-25 Online:2017-07-14

摘要: 以硫酸铝为铝源、 碳酸氢铵为沉淀剂, 采用分步老化法, 使用L 9( 3 4) 正交实验考察了碳酸氢铵物质的
量浓度、 反应温度、 p H和n( HCO- 3 ) /n( A l 3+) 等因素对制备毭 灢 A l 2O3 的影响, 并对所得 A l 2O3 进行了 N2 物理吸附
表征和堆积密度测量, 对 Y 5样品进行了X射线衍射和电镜扫描, 由正交实验结果分析得出温度和p H 对毭 灢 A l 2O3
的结构影响很大。大孔容氧化铝的制备最佳条件为: 反应温度为7 5曟, p H为8. 5, 碳酸氢铵物质的量浓度为2m o l /
L, n( HCO- 3 ) /n( A l 3+) 为0. 7 5。其中, 样品 Y 5孔容达2. 0 2mL / g, 具有双峰孔分布, 粒子呈纤维状, 大小均匀, 粒径
为1毺m左右。

关键词: 正交实验, 氧化铝, 堆积密度, 孔容, N2 吸附 - 脱附

Abstract: Alumina were prepared with aluminium sulfate as aluminium source, ammonium bicarbonate as precipitant, using substep aging method and L9 (34) orthogonal table. Factors inculding ammonium bicarbonate concentration, reaction temperature, pH and n(HCO-3)/n(Al3+) were studied. The alumina were characterized by the N2 physisorption and bulk density measurement, XRD and SEM as well. After orthogonal analysis, reaction temperature and pH have significant effect on textile properties of γAl2O3. Optimum preparation conditions were determined by macropore formation, and they were as follows: reaction temperature 75 ℃, pH 8.5, the concentration of ammonium bicarbonate 2 mol/L, n(HCO-3)/n(Al3+) ratio 075. Besides that, Y5 has big pore volume up to 2.02 mL/g, bimodal pore distribution and fibrous particles which have uniform size around 1 μm.

Key words: Orthogonal experiment, γ-alumina, Bulk density, Pore volume, N2 adsorptiondesorption isotherm

引用本文

杨鹏冲,韩易潼,孟秀红,王海彦,赵伟林,吉豪杰. 大孔容r-A l 2O3 的制备研究[J]. 辽宁石油化工大学学报, 2014, 34(2): 24-28.

Yang Pengchong, Han Yitong, Meng Xiuhong, Wang Haiyan, Zhao Weilin, Ji Haojie. Preparation of Macroporous γ-Al2O3[J]. Journal of Liaoning Petrochemical University, 2014, 34(2): 24-28.

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