Novel mesoporous aluminosilicate supported palladium-rhodium catalysts for diesel upgrading: II. Catalytic activity and improvement of industrial diesel feedstocks
- 作者：Mé ; lanie Taillades-Jacquin ; Deborah J. Jones ; Jacques Roziè ; re ; Ramon Moreno-Tost ; Antonio Jimé ; nez-Ló ; pez ; Simone Albertazzi ; Angelo Vaccari ; Loretta Storaro ; Maurizio Lenarda ; Jos&#x
- 关键词：Supported bimetallic catalyst ; Hydrogenation/hydrodecyclisation ; Diesel ; Cetane number ; Light cycle oil
- 刊名：Applied Catalysis A ; General
- 出版年：2008
- 期刊代码：4_0926860x
- 类别：ch
- 出版时间：1 June 2008
- 卷：340
- 期：2
- 页码：257-264
- 文件大小：777 K
摘要
Bimetallic PdRh catalysts (molar ratio Pd/Rh = 1 and 2) were prepared by impregnation of a mesoporous aluminosilicate (molar ratio Si/Al = 10 and 20). These materials are destined to be used in industrial processes aiming to improve diesel quality by hydrogenation and ring-opening of aromatic components. The four catalysts were examined for their activity in hydrogenation of naphthalene and tetralin model feedstocks, at 6 MPa, including in the presence of sulfur containing compounds. The capacity of one of these catalysts to improve the quality of hydrogenated industrial light cycle oil containing ≤50 wt ppm of sulfur was evaluated in a pilot plant. In these industrial conditions, the catalyst has a higher catalytic activity at lower temperature than a reference state of-the-art catalyst, giving a seven-point improvement of the cetane number at 280–300 °C and with formation of less than 10%of non-selective cracking products.