Upgrading of light cycle oil by partial hydrogenation and selective ring opening over an iridium bifunctional catalyst

作者：Upare Dipali P; Rao R Nageswara; Yoon Songhun; Lee Chul Wee^*

来源：Research on Chemical Intermediates, 2011, 37(9): 1293-1303.

DOI：10.1007/s11164-011-0397-5

• LCO
• Selective ring opening (SRO)
• Bifunctional catalyst
• Cetane number (CN)
• (13)C NMR spectra

An iridium catalyst supported on USY zeolite has been evaluated for hydrotreating of light cycle oil (LCO) to reduce its aromaticity and improve its cetane index. The products were analyzed by GC and (13)C NMR spectrometry to determine quantitatively the aromatic carbon content and the increase in cetane index. Addition of an appropriate amount of potassium was found to be an effective way of optimizing the acid properties of the catalyst; reducing the number of strongly acid sites reduced its cracking activity. The results confirm that 0.9% (w/w) Ir/USY zeolite catalyst doped with 0.75% (w/w) K was highly suitable for partial hydrogenation and ring opening of LCO to improve cetane quality, thus increasing the extent of its blending ratio with the diesel pool.

• 出版日期2011-11