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- W2363216916 abstract "The carbon deposition and carbon elimination during CH 4 reforming with CO 2 over Ni/γ Al 2O 3 catalyst were investigated by means of TGA, XRD and TEM techniques. The yield of CO was also detected by an on line chromatograph. The results showed that the activation of CH 4 over Ni/γ Al 2O 3 catalyst is different from that of CO 2, and its inherent law can not be substantially changed in the presence of CO 2. However, the rate of decomposition of CH 4 could be promoted by carbonaceous deposit from CH 4 converted to CO by the dissociation of CO 2. Correspondingly, the rate of carbon deposition dramatically decreased. When the feed stock of CH 4 is equal to CO 2, the rate of carbon elimination by CO 2 is less than that of carbon deposition by CH 4, but much more CO 2 would inhibit carbon deposition, as well as the activation of CH 4. Therefore, there is an optimum feed ratio of n (CO 2)/ n (CH 4)=1 3, which seems to be unchanged with temperature. In this way, carbon deposition and carbon elimination may be in balance and lead to maximum CO yield and low rate of carbon deposition. The Ni/γ Al 2O 3 catalyst has very high capacity of carbon deposition, and is easily regenerated by carbon elimination, but the regeneration for many times leads to the growth of Ni particles, as a result, the catalytic activity decreases irreversibly." @default.
- W2363216916 created "2016-06-24" @default.
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- W2363216916 date "2001-01-01" @default.
- W2363216916 modified "2023-09-25" @default.
- W2363216916 title "Carbon Deposition and Carbon Elimination over Ni/γ-Al_2O_3 Catalyst for CH_4-CO_2 Reforming" @default.
- W2363216916 hasPublicationYear "2001" @default.
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