催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (6): 514-518.

• 研究论文 • 上一篇    下一篇

鸟巢状氧化镁球形材料的合成、表征及催化性能

张世刚1,2,3,许磊1,2,刘红超1,2,孟霜鹤1,2,杨越1,2,陈吉平4,刘中民1,2   

  1. 1中国科学院大连化学物理研究所甲醇制烯烃国家工程中心, 辽宁大连 116023; 2中国科学院大连化学物理研究所清洁能源国家实验室, 辽宁大连 116023; 3中国科学院研究生院, 北京 100049; 4中国科学院大连化学物理研究所生态环境评价与分析测试中心, 辽宁大连 116023
  • 收稿日期:2009-06-25 出版日期:2009-06-25 发布日期:2013-03-22

Synthesis, Characterization, and Catalytic Performance of Nest-Like Magnesia Spheres

ZHANG Shigang 1, 2, 3, XU Lei 1, 2, LIU Hongchao 1, 2, MENG Shuanghe 1, 2, YANG Yue 1, 2, CHEN Jiping 4, LIU Zhongmin 1, 2,*   

  1. 1National Engineering Laboratory for Methanol to Olefin, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sci-ences, Dalian 116023, Liaoning, China; 3Graduate University of Chinese Academy of Sciences, Beijing 100049, China; 4Analytical Labora-tory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
  • Received:2009-06-25 Online:2009-06-25 Published:2013-03-22

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摘要： 将硝酸镁和碳酸钾溶液在沸腾的条件下反应, 制备了一种具有鸟巢状形貌的碱式碳酸镁球形材料. 此结构是由片状材料在无模板剂的条件下通过自组装形成, 而且在焙烧过程中, 形貌可以保持不变, 从而制备得到新颖的具有鸟巢状形貌的多孔氧化镁球形材料. 采用 X 射线衍射、低温氮气吸附、红外、热重和扫描电镜等分析手段对制备的材料进行了表征. 结果表明, 鸟巢状氧化镁具有较大的比表面积 (150 m2/g) 和孔容 (0.51 cm3/g). 该材料用于 1,2-丙二醇转化反应时, 丙酮醇的选择性为 92.36%, 显示了良好的催化活性.

关键词: 多孔, 鸟巢状, 氧化镁, 自组装, 丙二醇, 丙酮醇

Abstract: Nest-like alkaline magnesium carbonate spheres were successfully prepared from self- assembled thin nanoplates, which can convert to nest-like magnesium oxide (MgO) without changes of morphology by calcination. The obtained nest-like MgO spheres show a high specific surface area and large pore volume. A high selectivity (92.36%) for acetol can be achieved in the conversion of 1,2-propylene glycol over the MgO with nest-like structure.

Key words: porous, nest-like, magnesium oxide, self-assembly, propylene glycol, acetol