The hydrocracking of n-decane over bifunctional Ni-H3PW12O40/SiO2 catalysts

✍ Scribed by Bo Qiu; Xiaodong Yi; Ling Lin; Weiping Fang; Huilin Wan

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 393 KB
• Volume: 131
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/j.cattod.2007.10.095

✦ Synopsis

A series of bifunctional Ni-H 3 PW 12 O 40 /SiO 2 catalysts for the hydrocracking of n-decane were designed and prepared. The evaluation results of the catalysts show that Ni-H 3 PW 12 O 40 /SiO 2 catalysts possess a high activity for hydrocracking of n-decane and an excellent tolerance to the sulfur and nitrogen compounds in the feedstock. Under the reaction conditions: reaction temperature 300 8C; H 2 /n-decane volume ratio of 1500; total pressure of 2 Mpa and the LHSV 2 h À1 , the conversion of n-decane over reduced 5%Ni-50%H 3 PW 12 O 40 /SiO 2 catalysts is as high as 90%, the C 5 + selectivity equal to 70%. In order to reveal the structure and nature of the catalysts, a number of characterizations including XRD, Raman, H 2 -TPD, NH 3 -TPD, XPS and FT-IR of pyridine adsorption were carried out. The characteristic results show that the high activity of the catalysts and high C 5

• selectivity can be related to the unique structure of the H 3 PW 12 O 40 and its suitable acidity.