合成了具有磁铅石结构的Ｓｒ１－ｘＬａｘＮｉＡｌ１１Ｏ１９系列催化剂，并用ＸＲＤ、ＵＶ－ＤＲＳ、Ｈ２－Ｏ２滴定及Ｐｙ－ＩＲ等方法对其体相及表面性质进行了表征．结果表明，Ｌａ３＋离子能够同晶取代Ｓｒ２＋离子进入催化剂晶格内部；随着Ｌａ３＋含量增加，催化剂的结晶度提高，从而降低了镍的还原性，并使金属镍在表面上的分散度略有提高；在ＳｒＮｉＡｌ１１Ｏ１９中掺入Ｌａ３＋离子，能够抑制晶体沿ｃ轴方向的生长，提高其比表面积；同时Ｌａ３＋离子对Ｓｒ２＋离子的调变，减少了表面的酸中心数目 The Sr1-xLaxNiAl11O19 series catalysts with magnetoplumbite structure were synthesized and their phase and surface properties were characterized by XRD, UV-DRS, H2-O2 titration and Py-IR. The results show that La3 + can crystallize instead of Sr2 + ions into the crystal lattice of the catalyst. With the increase of La3 + content, the crystallinity of the catalyst increases, reducing the reducibility of Ni and slightly increasing the dispersion of Ni on the surface ; In SrNiAl11O19 doped La3 + ions, can inhibit the growth of crystals along the c-axis direction to increase its specific surface area; the same time La3 + ions of Sr2 + ions modulation, reducing the number of acid centers on the surface