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- W2014657680 abstract "Samples of poisoned alumina catalysts obtained from Claus sulfur recovery plants in Alberta have been regenerated. Poisoned catalysts had SO4=, NO3−, sulfur and carbon deposits, discoloration, and low surface areas. Whereas the Claus catalytic activity of the poisoned catalysts varied widely, regeneration uniformly enhanced the catalytic activity to the same level as fresh alumina. The activity comparisons were made under conditions similar to those of a third Claus converter of low partial pressures of H2S and SO2 and high partial pressure of H2O, where maximum catalytic activity is required to promote Claus reaction. On a régénéré des échantillons empoisonnés de catalyseurs, à base d'alumine, obtenus des usines Claus de récupération du soufre. Les catalyseurs empoisonnés contenaient SO4=, NO3− des dépôts de soufre et de carbone; ils avaient en outre de faibles surfaces spécifiques et leur couleur avait été affectée. Bien qu'il y ait eu une grande variation dans l'activité catalytique du procédé, la régénération des catalyseurs empoisonnés a ramené leur activité au měme degré que l'alumine fraǐche. On a comparé les activités catalytiques dans des conditions semblables à celles qui prévalent dans le cas d'un troisième convertisseur Claus, pour de faibles pressions partielles de H2S et SO2 et une pression partielle élevée de H2O, alors qu'il faut une activité catalytique maximale pour promouvoir la réaction de Claus." @default.
- W2014657680 created "2016-06-24" @default.
- W2014657680 creator A5003577561 @default.
- W2014657680 date "1978-12-01" @default.
- W2014657680 modified "2023-09-25" @default.
- W2014657680 title "Poisoning and regeneration of claus alumina catalysts" @default.
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- W2014657680 doi "https://doi.org/10.1002/cjce.5450560610" @default.
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