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考察了稀土钝钒剂（其活性组分为Ｌａ２Ｏ３）对钒污染的ＲＨＺ－３００裂化催化剂的裂化活性、生焦及再生性能的影响。研究结果表明，随着钝钒剂中活性组分Ｌａ２Ｏ３负载量的增加，催化剂的裂解活性也增加，但负载量有一个最佳值。同时，随着钝钒剂加入量的增加，催化剂的裂解活性增加，其加入量也有一个最佳值。稀土钝钒剂能明显地抑制钒污染的ＲＨＺ－３００催化剂的生焦。对催化剂的烧焦反应行为及热重动力学研究表明，稀土钝钒剂的加入能明显地降低烧焦反应的活化能和烧焦温度，并有助于催化剂的低温再生。
The effect of rare earth vanadium arsenide (La2O3) on the cracking activity, char formation and regeneration performance of vanadium-contaminated RHZ-300 cracking catalyst was investigated. The results show that with the increase of the La2O3 loading of the active component in the vanadium-bearing vanadium catalyst, the cleavage activity of the catalyst also increases, but the loading has an optimum value. At the same time, with the increase of the amount of vanadyl, the cracking activity of the catalyst increases, and the addition amount of the catalyst also has an optimum value. Rare earth vanadium can significantly inhibit vanadium-contaminated RHZ-300 catalyst coke. The studies on the scorch behavior and thermogravimetric kinetics of the catalysts show that the addition of rare earth vanadyl can significantly reduce the activation energy and scorch temperature of the scorch reaction and contribute to the low temperature regeneration of the catalyst.