Ni/W-USY Catalyst for High Diesel Yield and Deep Hydrodearomatization

• Published in: Energy & fuels Vol. 23; no. 1; pp. 55 - 59
• Main Authors: Tian, Ran, Shen, Baojian, Wang, Fucun, Lu, Chunxi, Xu, Chunming
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 22.01.2009
• Subjects: Applied sciences; Catalysis and Kinetics; Crude oil, natural gas and petroleum products; Energy; Exact sciences and technology; Fuels; Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units; Desulfurization; Hydrotreating; Diesel fuel; Fluid catalytic cracking; Zeolite; Silica; Molecular sieve; Hydrodenitrogenation; Tungsten; Cetane number; Nickel; X ray diffractometry; Performance; Catalyst activity; Alumina; Hydrodesulfurization
• ISSN: 0887-0624; 1520-5029
• DOI: 10.1021/ef800682x

Two Ni/W hydrodearomatization (HDA) catalysts, CAT-1 and CAT-2, were prepared by wetness impregnation on mixed supports of USY zeolite and amorphous silica−alumina. The structure and properties of CAT-1 and CAT-2 catalysts were characterized by XRD, XRF, pyridine-IR, and N2 adsorption/desorption techniques. The hydrotreating tests with a lower initial boiling point light cycle oil from fluid catalytic cracking showed that CAT-1 catalyst achieved hydrodearomatization, hydrodesulfurization (HDS), and hydrodenitrogenation (HDN) performance: 97.4% hydrodesulfurization, 99.5% hydrodenitrogenation, 14 cetane number improvement, 97.6 wt % diesel yield, and 0.0410 g/cm3 density reduction. The high HDA activity of CAT-1 catalyst was attributed to a low total acidity and Lewis acidity. Adding various modified zeolites did not significantly influence HDS and HDN activities and diesel yield.