A Novel Hexaaluminate Material: Preparation, Characterization and Catalytic Activity in Methane Combustion

作者：Zhong Dong Tao; Kai Huang; Dong Fang Wu

来源：Applied Mechanics and Materials, 2014, 665: 260-263.

DOI：10.4028/www.scientific.net/amm.665.260

<jats:p>A novel hexaaluminate material Ca<jats:sub>0.6</jats:sub>La<jats:sub>0.4</jats:sub>Fe<jats:sub>x</jats:sub>Mn<jats:sub>1-x</jats:sub>Al<jats:sub>11</jats:sub>O<jats:sub>19</jats:sub> was prepared by a micro-emulsion method, and then washcoated on the cordierite substrates to produce monolithic catalysts. The obtained hexaaluminates were characterized by X-ray diffraction and scanning electron microscope. Results show that the particles of the prepared hexaaluminates samples are well-proportioned and small, and that the lower-quantity replacement of Mn<jats:sup>2+</jats:sup> with Fe<jats:sup>3+</jats:sup> is of benefit to forming single hexaaluminates crystal phases. After the partial replacement of Mn<jats:sup>2+</jats:sup> with Fe<jats:sup>3+</jats:sup> in hexaaluminate, the catalytic activity in methane combustion improved.</jats:p>

• 出版日期2014-10
• 单位东南大学