The potential of Amorphous Silica Alumina (ASA) supported Pt and Pd catalysts for deep hydrodesulphurisation (HDS) of diesel fuels was investigated. It appeared that the ASA supported catalysts exhibit an excellent activity for the conversion of 4-Ethyl, 6-Methyl Dibenzothiophene (4-E, 6-M DBT) under model conditions as compared to conventional HDS catalysts and ¿-Al2O3 supported noble metal catalysts.
Pt/ASA was also tested under practical conditions using a diesel fuel feed. ThePt/ASA catalyst showed a comparable activity to the NiW/¿-Al2O3 catalyst which was higher than that of the conventional CoMo/¿-Al2O3 catalyst. The main difference of the catalyst was the better hydroconversion of the 4,6 di-alkylated DBT's. The better performance of Pt/ASA in the testing under model conditions as compared to the diesel fuel HDS can be attributed to poisoning of part of the active phase by basic nitrogen compounds like quinoline.
It is concluded that ASA supported noble metal catalysts have a promising potentialfor deep HDS processing.
|Naam||Studies in Surface Science and Catalysis|
|ISSN van geprinte versie||0167-2991|
|Congres||conference; European Workshop on Hydrotreatment and Hydrocracking of Oil Fractions ; 6 (Oostende) : 1997.02.17-19|
|Periode||1/01/97 → …|
|Ander||European Workshop on Hydrotreatment and Hydrocracking of Oil Fractions ; 6 (Oostende) : 1997.02.17-19|