The suppression of a basic nitrogen compound influence on hydrodesulfurization activity of dibenzothiophene in treated diesel over Al2O3 supported CoMo catalysts by ZrO2 as a secondary support

The suppression of a basic nitrogen compound influence on hydrodesulfurization activity of dibenzothiophene in treated diesel over Al2O3 supported CoMo catalysts by ZrO2 as a secondary support

Type	Journal Article
Author	Pawinee Sintarako
Author	Piyasan Praserthdam
URL	http://www.sciencedirect.com/science/article/pii/S1566736715000217
Volume	62
Issue	0
Pages	89-94
Publication	Catalysis Communications
Date	March 5, 2015
Abstract	Reports a study of the effect of ZrO2 as a secondary support on HDS activity of dibenzothiophene in treated diesel over CoMo/Al2O3 catalysts. Researchers evaluated the HDS activity of all prepared catalysts at 350 °C and 8 MPa. They observed that CoMo/Al2O3–ZrO2 catalyst with 10 wt.% of ZrO2 exhibited the highest HDS. In the presence of pyridine, a basic nitrogen compound, the addition of ZrO2 suppressed the influence of pyridine on the HDS activity of CoMo/Al2O3 based catalyst. These can be explained by the decrease of the total amount of acid sites on CoMo/Al2O3 catalyst with the addition of ZrO2.