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- W2531310864 abstract "We have previously shown that cis-decalin is much more stable than cis-decalin, and the former also has the ability of inhibiting the solid deposit formation from jet fuels at high temperatures. It is desirable to convert cis-decalin to trans-decalin. This work presents some exploratory studies on the catalytic isomerization of cis-decalin to trans-decalin. The catalytic reactions were conducted at 200-275{degrees}C for 0.15-8 h under an initial pressure of 0.79-MPa N{sub 2} or H{sub 2} using the following catalysts: a hydrogen Y zeolite (HY), a metal ion-exchanged Y zeolite (LaHY), a hydrogen mordenite (HM38), and three noble metal loaded mordenites (PtHM38, PdHM38, and PtHM21). Pt- and Pd-loaded mordenites are very effective catalysts under H{sub 2} atmosphere for the isomerization reaction even at low temperature, 200{degrees}C; however, they are less effective under N{sub 2} atmosphere. HY, LaHY, and HM38 are much less effective than Pt- and Pd-loaded mordenites, and their performance was not affected by H{sub 2}. HY performs slightly better than LaHY in terms of activity and selectivity, and HM38 is the least effective one among the catalysts studied. Selectivity towards trans-decalin decreases with both increasing temperature and increasing conversion level (under isothermal condition). An overall kinetic model for the catalyticmore » reaction was proposed and empirical equations were presented to predict the selectivity.« less" @default.
- W2531310864 created "2016-10-21" @default.
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- W2531310864 date "1995-12-31" @default.
- W2531310864 modified "2023-09-27" @default.
- W2531310864 title "Zeolite-catalyzed conformational isomerization of cis-decahydronaphthalene reaction pathways and kinetics" @default.
- W2531310864 hasPublicationYear "1995" @default.
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