Studies on acidity, activity and coke deactivation of ZSM-5 during n-heptane aromatization
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Sahoo,S.K
Viswanadham,N Ray,N Gupta,J.K Singh,I.D |
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| Date |
2009-07-01T06:25:01Z
2009-07-01T06:25:01Z 2009-07-01T06:25:01Z |
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| Identifier |
Applied Catalysis A: General 205 (2001) 1–10
http://hdl.handle.net/123456789/278 |
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| Description |
In order to understand the effects of acidity and acid strength distribution on the nature of coke formed over ZSM-5
zeolite in n-heptane aromatization reaction, a series of ZSM-5 samples dealuminated to different degrees are prepared.
Microcalorimetric ammonia adsorption studies indicated the presence of very strong acid sites (1H>140 kJ/mol) in the
catalysts steamed at 400 and 500 C. 13C CP/MAS NMR along with dipolar dephasing is used to estimate the fraction of
aromatic carbon and variation in aliphatic components with change in acidity of the ZSM-5 zeolites. Maximum selectivity
to aromatics in n-heptane conversion is observed in the case of partly dealuminated ZSM-5 catalyst, whereas the aromatic
nature of the coke is continuously decreased with steaming temperature, i.e. Keywords: Catalysis; ZSM-5; Aromatization; Coking; 13C CP/MAS NMR
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| Language |
en_US
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| Subject |
Catalysis
CP/MAS NMR Aromatization |
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| Title |
Studies on acidity, activity and coke deactivation of ZSM-5 during n-heptane aromatization
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| Type |
Article
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