Corrigendum to “Catalyst for ultra-low sulfur and aromatic diesel” [Appl. Catal. A: Gen. 282 (2005) 227–235]

Preparation of phosphate promoted Na2WO4/Al2O3 catalyst and its application for oxidative desulfurization

“…HDS is highly efficient for removal of thiols, sulfides, and disulfides, but not for aromatic thiophenes especially the alkyl-dibenzothiophenes [1]. Poly-alkyl-diaromatic and dibenzothiophenes (DBT) are the most refractive compounds for hydrodesulfurization and require high temperature and pressure, which creates many problems; including high investment, high operating cost, reduction of length of the catalyst cycle and increase in the hydrogen consumption due to the hydrogenation of olefin and aromatic compounds present in fuels [2,3]. For these reasons, alternative desulfurization processes are necessary for producing clean fuels.…”

Investigation of hydrodearomatization of prehydrogenated gas oil fractions on Pt–Pd/H-USY catalysts

“…During the last 20 years the sulphur content of diesel fuels has been reduced stepwise from 1% to 50 ppm by January, 2005 and will be tightened to 10 ppm by January, 2009 [1][2][3]. Reasons of sulphur reduction are the environmental protection and the conservation of the activity of aftertreatment catalysts.…”

“…However, more severe requirements are scheduled in the near future which may include restrictions not only for polyaromatics but also for the total aromatic content of diesel fuels. Beside quality requirements, demand for the transportation diesel fuels (mainly in the European Union) is also increasing [1][2][3]. It is expected that deep hydrodearomatization and hydrodesulphurization of gas oils may be needed in order to satisfy these requirements [4,5].…”