Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10241399 | Applied Catalysis B: Environmental | 2005 | 6 Pages |
Abstract
Silicoaluminophosphate molecular sieves with AFI, AFO, AEL and CHA topologies have been investigated as a hydrocarbon trap by studying the temperature programmed desorption of toluene. The pore diameter is increased in the following order: SAPO-34 (dp = 0.38 nm) < SAPO-11 (0.39 nm Ã 0.63 nm) < SAPO-41 (0.43 nm Ã 0.70 nm) < SAPO-5 (0.73 nm). The capacity to adsorb hydrocarbon increases with increase of pore width. The effect of hydrothermal treatment over SAPO-5 shows that the stability is not affected significantly up to a temperature of 700 °C. Moreover, Si substitution is playing an important role in desorption temperature while capacity to adsorb toluene is mostly influenced by pore diameter.
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Authors
S.P. Elangovan, M. Ogura, Y. Zhang, N. Chino, T. Okubo,