2004
DOI: 10.1016/j.micromeso.2003.09.025
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Light hydrocarbon sorption properties of pure silica Si-CHA and ITQ-3 and high silica ZSM-58

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Cited by 186 publications
(205 citation statements)
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“…The RD 145 parameter varies with temperature being close to 1500 at 298 and 333 K, decreasing down to 580 at 363 K. These results clearly indicate that ITQ-32 zeolite is a good candidate for carrying out separations of propene/propane gas mixtures. Up to our knowledge, pure silica chabazite 10,11 and ITQ-12 27 are 150 the most successful zeolites for propene/propane separation. ITQ-12 allows thermodynamic propene/propane separation, which is the preferred performance for gas separation.…”
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confidence: 98%
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“…The RD 145 parameter varies with temperature being close to 1500 at 298 and 333 K, decreasing down to 580 at 363 K. These results clearly indicate that ITQ-32 zeolite is a good candidate for carrying out separations of propene/propane gas mixtures. Up to our knowledge, pure silica chabazite 10,11 and ITQ-12 27 are 150 the most successful zeolites for propene/propane separation. ITQ-12 allows thermodynamic propene/propane separation, which is the preferred performance for gas separation.…”
mentioning
confidence: 98%
“…1 Therefore, adsorption processes that are able to discriminate between olefins and paraffins are of great interest in this area and have been investigated in the last years. 2 Besides the 20 interest in the synthesis of ultralarge pore zeolites for catalysis, electronics and drug delivery, [3][4][5][6] a number of zeolites with small pores have been reported for olefin/paraffin separations, including Cu and/or Ag exchanged zeolites 7 and neutral all-silica [8][9][10][11] or aluminophosphate molecular sieves. 12, 13 Cu and Ag-exchanged 25 materials accomplished the gas separation process through π-complexation interaction cation-olefin, 14 while in the case of neutral zeolites and aluminophosphates the separation is based in a molecular sieve effect, 15 which presents clear benefits in terms of stability and long term operation with respect to cation-exchanged 30 zeolites.…”
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confidence: 99%
“…Zeolitas con poros separados por anillos formados de 8 unidades tetraédricas de SiO 4/2 (8 Member Ring, 8-MR) han sido recientemente reconocidas como candidatos potenciales para separar mezclas de compuestos con diámetros cinéticos que están en el mismo rango de las dimensiones de las ventanas. 13,[20][21][22] Ejemplos de este tipo especial de zeolitas son las recientemente sintetizadas ITQ-3 (ITE), 21 ITQ-12 (ITW) 22 e ITQ-32 (IHW), 11 las cuales han mostrado ser potencialmenteútiles en la separación de mezclas de hidrocarburos que presentan propiedades químicas y tamaños similares. Aún más sobresaliente, es su capaci-…”
Section: Zeolitas Y Su Papel En Procesos De Separaciónunclassified
“…147 Los procesos de separación basados en zeolitas intercambiadas se llevan a cabo a través de la formación de complejos de tipo π, los cuales se forman cuando iones de Cu o Ag, previamente adicionados a la estructura zeolíti-ca, interaccionan con las moléculas insaturadas, 148,149 mientras que en el caso de separaciones que involucran zeolitas puramente silíceas la separación se da por efectos de tamizado molecular. 20,21,141,150 En este capítulo se estudia la dinámica de la red cristalina y las consecuencias que el modelamiento de la flexibilidad de dicha red tendrá sobre la movilidad de las especies adsorbidas. Para este fin usaremos la técnica de Dinámica Molecular…”
Section: Términos No-enlazantesunclassified
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