Sinha, A. K. ; Sivasanker, S. (1999) Hydroisomerization of n-hexane over Pt-SAPO-11 and Pt-SAPO-31 molecular sieves Catalysis Today, 49 (1-3). pp. 293-302. ISSN 0920-5861
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0920-5861(98)00436-2
Abstract
SAPO-11 and SAPO-31, two medium pore molecular sieves, were synthesized from aqueous and non-aqueous (ethylene glycol) media. Their acidities (by TPD of pyridine) and their catalytic activities in the isomerization of n-hexane are compared. Samples synthesized from non-aqueous medium possess more acidity and higher activities than those obtained from aqueous medium. 29Si MAS NMR studies suggest greater substitution of P5+ by Si4+ and lower concentration of silica islands in the samples synthesized from non-aqueous medium. Both SAPO-11 and -31 produce predominantly the monomethyl isomers due to their medium size pores. The activity studies were carried out over Pt-loaded samples in the presence of H2.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Hydroisomerization; Pt-SAPO-11; Pt-SAPO-31 |
| ID Code: | 47653 |
| Deposited On: | 12 Jul 2011 14:37 |
| Last Modified: | 12 Jul 2011 14:37 |
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