TANG Jin-lian, XU You-hao, WANG Xie-qing, CHENG Cong-li. Opening of naphthenic ring in decalin cracking over zeolite catalysts[J]. Journal of Fuel Chemistry and Technology, 2012, 40(12): 1422-1428.
Citation:
TANG Jin-lian, XU You-hao, WANG Xie-qing, CHENG Cong-li. Opening of naphthenic ring in decalin cracking over zeolite catalysts[J]. Journal of Fuel Chemistry and Technology, 2012, 40(12): 1422-1428.
TANG Jin-lian, XU You-hao, WANG Xie-qing, CHENG Cong-li. Opening of naphthenic ring in decalin cracking over zeolite catalysts[J]. Journal of Fuel Chemistry and Technology, 2012, 40(12): 1422-1428.
Citation:
TANG Jin-lian, XU You-hao, WANG Xie-qing, CHENG Cong-li. Opening of naphthenic ring in decalin cracking over zeolite catalysts[J]. Journal of Fuel Chemistry and Technology, 2012, 40(12): 1422-1428.
Decalin cracking over Y and ZSM-5 zeolites were conducted in a small fixed fluidised bed (FFB) reactor; the effect of temperature and catalyst/oil ratio on the opening of naphthenic ring in decalin cracking over Y zeolite was investigated. The results showed that the products of decalin cracking over zeolite catalysts by naphthenic ring opening involve non-aromatics (propane, propylene, butane, butylenes, methylpenptane, cyclopentane, cyclohexane, etc.) and monocyclic aromatics (benzene, and C1~4 alkyl benzene); polycyclic aromatics (tetrahydronaphthalene, naphthalene, alkyl naphthalene, phenanthrenes, pyrenes, etc.) and even coke may also be formed through dehydrogenation condensation reactions. The selectivity for naphthenic ring opening over ZSM-5 catalyst is higher than that over Y catalyst, due to difference in the diffusion and adsorption of naphthenic hydrocarbon on two catalysts. The relative ratio of naphthenic ring opening to dehydrogenation condensation reactions (NRO/DHC) is higher over ZSM-5 catalyst than that over Y catalyst. Under the conditions of 450~550 ℃, weight hourly space velocity of 10 h-1, and catalyst/oil mass ratio of 3~9, with the increase of the reaction temperature or the catalyst/oil ratio, the bimolecular hydrogen transfer and dehydrogenation condensation are enhanced and as a result, the selectivity to the products from naphthenic ring opening is decreased.
DEWACHTERE N V, SANTAELLA F, FROMENT G F. Application of a single-event kinetic model in the simulation of an industrial riser reactor for the catalytic cracking of vacuum gas oil [J]. Chem Eng Sci, 1999, 54(15/16): 3653-3660.
CORMA A, GONZALEZ-ALFARO V, ORCHILLES AV. Decalin and tetralin as probe molecules for cracking and hydrotreating the light cycle oil[J]. J Catal, 2001, 200(1): 34-44.
AL-SABAWI M, de LASA H. Modeling thermal and catalytic conversion of decalin under industrial FCC operating conditions[J]. Chem Eng Sci, 2010, 65(2): 626-644.
唐津莲, 许友好, 汪燮卿. 全氢菲在分子筛催化剂上环烷环开环反应的研究[J]. 燃料化学学报, 2012, 40(6): 721-726. (TANG Jin-lian, XU You-hao, WANG Xie-qing. Naphthenic ring opening of perhydrophenanthrene over zeolite catalysts [J]. Journal of Fuel Chemistry and Technology, 2012, 40(6): 721-726.)
AL-KHATTAF S, de LASA H. Catalytic cracking of cumene in a riser simulator: A catalyst activity decay model[J]. Ind Eng Chem Res, 2001, 40(23): 5398-5404.
BURRIESCI N, VALENTE S, OTTANR, CIMINO G, ZIPELLI C. Utilization of zeolites in spinach growing[J]. Zeolites, 1984, 4(1): 5-8.