THIOPHENE CRACKING USING MAGNESIUM MODIFIED BETA ZEOLITE
DOI:
https://doi.org/10.18540/jcecvl4iss4pp0378-0382Keywords:
Catalytic cracking, Beta zeolites, ThiopheneAbstract
The development of additives for FCC catalysts aiming at a greater sulfur removal in the gasoline fraction has been a priority with tougher environmental legislation demands. In this context, this study has evaluated the effect of magnesium modified beta zeolite on n-hexane cracking, and the catalytic conversion of thiophene added as contaminant. Catalytic tests’ results, performed at low conversion at 400 ºC with a WHSV of 0.83 s-1 indicate that magnesium addition increased n-hexane cracking from 37.7 to 53.6% in mols, but favored the formation of alkylated sulfur compounds over H2S production.Downloads
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References
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CORMA, A., MARTÍNEZ, C., KETLEY, G., BLAIR, G. On the mechanism of sulfur removal during catalytic cracking. Applied Catalysis A: General, v. 208, p. 135-152, 2001.
CORMA, A, SAUVANAUD, L. FCC testing at bench scale: New units, new processes, new feeds. Catal Today, v. 218, p. 107-114, 2013.
DEL RIO, D, BASTOS, R, SEDRAN, U. Commercial additives for sulfur control in FCC gasoline: Overall analysis of their impact on LCO and gasoline. Catal Today, v. 213, p. 206-210, 2013.
DEHGHAN, R., ANBIA, M. Zeolites for adsorptive desulfurization from fuels: A review. Fuel Processing Technology, v. 167, p. 99-116, 2017.
GUPTA, A. K., IBRAHIM, S., SHOAIBI, A. AL. Advances in sulfur chemistry for treatment of acid gases. Progress in Energy and Combustion Science, v.54, p. 65–92, 2016.
JAIMES, L., FERREIRA, M. L., DE LASA, H. Thiophene conversion under mild conditions over a ZSM-5 catalyst. Chemical Engineering Science, v.64, n.11, p.2539–2561, 2009.
KARAKHANOV, E. A., GLOTOV, A. P., NIKIFOROVA, A. G., VUTOLKINA, A. V., IVANOV, A. O., KARDASHEV, S. V., MAKSIMOV, A. L., LYSENKO, S. V. Catalytic cracking additives based on mesoporous MCM-41 for sulfur removal. Fuel Processing Technology, v.153, p. 50–57, 2016.
LEE, K. X., VALLA, J. A. Investigation of metal-exchanged mesoporous Y zeolites for the adsorptive desulfurization of liquid fuels. Applied Catalysis B: Environmental, V. 201, p. 359–369, 2017.
LEFLAIVE, P., LEMBERTON, J. L., PÉROT, MIRGAIN, C., CARRIAT, J. Y., COLIN, J. M. On the origin of sulfur impurities in fluid catalytic cracking gasoline - Reactivity of thiophene derivatives and of their possible precursors under FCC conditions. Applied Catalysis A: General, v.227, p. 201-215, 2002.
LERSCH, P.; BANDERMANN, F. Conversion of chloromethane over metal-exchanged ZSM-5 to higher hydrocarbons. Applied Catalysis, v. 75, n. 1, p. 133-152, 1991.
MIOTTO, D. M. M., MACHADO, N. R. C. F. Utilização de zeólitas modificadas CaX e MgX como adsorventes de compostos orgânicos. Acta Scientiarum. Technology, v. 24, p. 1627-1635, 2002.
NODA, T.; SUZUKI, K.; KATADA, N.; NIWA, M.. Combined study of IRMS-TPD measurement and DFT calculation on Bronsted acidity and catalytic cracking activity of cation-exchanged Y zeolites. Journal of Catalysis, v.259, p. 203–210, 2008.
PENZIEN, J., ABRAHAM, A., BOKHOVEN, J. A., JENTYS, A., MÜLLER, T. E., SIEVERS, C. , LERCHER, J. A. Generation and Characterization of Well-Defined Zn2+ Lewis Acid Sites in Ion Exchanged Zeolite BEA. The Journal of Physical Chemistry B, v.108, p.4116–4126, 2004.
POTAPENKO, O. V., DORONIN, V. P., & SOROKINA, T. P. Influence of [H]-donating activity of hydrocarbons on transformations of thiophene compounds under catalytic cracking conditions. Petroleum Chemistry, v. 52, n. 1, p. 55-59, 2012.
POTAPENKO, O.V., DORONIN, V.P., SOROKINA, T.P., KROL, O.V., LIKHOLOBOV, V.A. Hydrogen transfer in transformations of olefin and thiophene compounds for the refining of gasoline fractions. Fuel Processing Technology, v.128, p. 251–256, 2014.
SHAN, H. H., LI, C. Y., YANG, C. H., ZHAO, H., ZHAO, B. Y., ZHANG, J. F. Mechanistic studies on thiophene species cracking over USY zeolite. Catalysis Today, v. 77, p. 117–126, 2002.
ZAFARI, R., KHARAT, A. N., Application of Zeolitic Additives in the Fluid Catalytic Cracking (FCC). Journal of nanostructure, v.3, n.2, p. 209?217, 2013.
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Published
2018-10-23
How to Cite
Santos, R. C., Almeida, D. F., Fonseca, F. S. C., da Silva, D. S., de Oliveira, A. A., Pontes, D. de A., & Pontes, L. A. M. (2018). THIOPHENE CRACKING USING MAGNESIUM MODIFIED BETA ZEOLITE. The Journal of Engineering and Exact Sciences, 4(4), 0378–0382. https://doi.org/10.18540/jcecvl4iss4pp0378-0382
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Section
Engineering of Chemical Reactions and Catalysis
