Kerosene cracking over supported monolithic Pt catalysts: Effects of SrO and BaO promoters

doi:10.1016/S1872-2067(12)60541-5

Abstract

Abstract:

The cracking of RP-3 fuel over supported monolithic Pt catalysts was studied at atmospheric pressure. The influence of BaO and SrO additives on the cracking reaction was examined. The effect of reaction time on the amount of carbon deposited during cracking was investigated. The catalysts were characterized using an automatic adsorption instrument (for Brunauer-Emmett-Teller analysis), temperature-programmed reduction, X-ray photoelectron spectroscopy, X-ray diffraction, and scanning electron microscopy. The results show that the total amount of gaseous products produced in catalytic cracking over a monolithic Pt/CA(CeO₂-Al₂O₃)-La-Al₂O₃ (CA is a support) catalyst increased by 39.7% compared with that produced by thermal cracking. The addition of BaO or SrO improved the total amount of gaseous products by 25.6% and 37%, respectively. If BaO and SrO were simultaneously added to the monolithic Pt/CA-La-Al₂O₃ catalyst, the catalytic effect improved significantly, and the total amount of gaseous products increased by 96.5%. The addition of BaO or SrO effectively inhibits carbon deposition, and the synergistic effect of BaO and SrO additives improves the cracking reaction.

Key words: Catalytic cracking, Carbon deposition, Alkaline-earth metal oxide, Endothermic fuel, Monolithic catalyst

JIAO Yi, WANG Jia, QIN Lixiao, WANG Jianli, ZHU Quan, LI Xiangyuan, GONG Maochu, CHEN Yaoqiang. Kerosene cracking over supported monolithic Pt catalysts: Effects of SrO and BaO promoters[J]. Chinese Journal of Catalysis, 2013, 34(6): 1139-1147.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(12)60541-5

https://www.cjcatal.com/EN/Y2013/V34/I6/1139

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