A methodology for screening hydrocracking catalysts

✍ Scribed by Rameshwar Prasad; Rameshwar P. Dabral; Brij M. L. Wadehra; R. Moolchandra; Krishan G. Mittal

• Publisher: Wiley (John Wiley & Sons)
• Year: 1995
• Tongue: English
• Weight: 344 KB
• Volume: 64
• Category: Article
• ISSN: 0268-2575
• DOI: 10.1002/jctb.280640213

✦ Synopsis

Hydroconversion of n-heptane and toluene has been studied over a commercially proven Ni-W/SiO,-AI,O, amorphous base hydrocracking catalyst (suitable for maximizing middle distillates production from heavier feedstocks) under a wide range of operating conditions (pressure: 400-1200 psig; temperature: 315-36OoC, liquid hourly space velocity (LHSV) -1 h-' and molar hydrogen/hydrocarbon feed ratio : 6-8) to assess the hydrogenation and cracking activities of the catalyst as part of the development of a quick methodology for catalyst screening. Hydroisomerization followed by hydrocracking, and hydrogenation followed by isomerization have been found to be the major reactions with n-heptane and toluene respectively as the feeds. The hydroconversion of toluene gives a very high selectivity of hydrogenated product. With n-heptane, a very high selectivity of hydroisomerized product, together with a high ratio of hydroisomerized to hydrocracked product, is obtained.