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利用 ＸＲＤ和 ＢＥＴ等物理技术研究了 ＣｒＯ_ｘ对 ＺｒＯ_２的抗烧结性能及 Ｃｒ的分散状态。结 果表明， ＣｒＯ_ ｘ是良好的ＺｒＯ_２抗烧结剂，会抑制 ＺｒＯ_２晶型从无定形→四方→单斜的相变过程； ＣｒＯ_ｘ 与ＺｒＯ_２之间的强相互作用还有利于ＣｒＯ_ｘ在ＺｒＯ_２表面的分散．ＮＯ的ＴＰＤ－ＭＳ实验表明，ＮＯ在 ＣｒＯ_ｘ／ＺｒＯ_２表面存在两种与ＺｒＯ_２作用强弱不同的吸附态，在程序升温脱附过程中发生了ＮＯ的离 解反应．ＮＯ＋ＣＯ的反应实验表明，反应过程中存在中间产物Ｎ_２Ｏ，低温有利生成Ｎ_２Ｏ．而高温有利 于转化成Ｎ_２。
The XRD and BET techniques were used to study the sintering resistance of CrO_x to ZrO_2 and the dispersion of Cr. The results show that CrO_x is a good ZrO_2 anti-sintering agent, which inhibits the phase transition of amorphous ZrO_2 from amorphous to tetragonal → monoclinic. The strong interaction between CrO_x and ZrO_2 is also beneficial to the dispersion of CrO_x on the surface of ZrO_2. NO TPD-MS experiments showed that there are two different adsorption states of NO on the surface of CrO_x / ZrO_2, which are different from those of ZrO_2. NO dissociation occurs during temperature-programmed desorption. Reaction experiments of NO + CO showed that N_2O was present during the reaction and N_2O was favored at low temperature. The high temperature is conducive to conversion to N2.