The average valence of vanadium in the catalysts was determined by chemical titration.
用化学滴定法测定催化剂中钒的平均价态。
Metal passivator can inhibit nickel and vanadium pollution on the catalytic cracking catalysts and improve the property of polluted catalysts.
金属钝化剂可以抑制镍和钒等金属对催化裂化催化剂的污染，使被污染催化剂的性质得到改善。
Theactivity and the number of surface oxygen of a series of vanadium oxide catalysts were studied by TPD equilibrium and TPD/MS technique.
应用此法和TPD/MS实验技术同时测定了一些钒系催化剂的表面活性氧的活性和供氧数目。
Effects of vanadium poisoning on molecular sieves and catalysts were studied and a high-activity solid vanadium-resistant additive for fluid catalytic cracking was prepared.
研究了钒对分子筛和催化剂性能的影响，并开发出一种高活性固体的流化催化裂化抗钒助剂。
Effects of vanadium poisoning on molecular sieves and catalysts were studied and a high-activity solid vanadium-resistant additive for fluid catalytic cracking was prepared.
研究了钒对分子筛和催化剂性能的影响，并开发出一种高活性固体的流化催化裂化抗钒助剂。
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