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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Thakur, Ruchika | - |
| dc.contributor.author | Barman, Sanghamitra | - |
| dc.contributor.author | Gupta, Raj Kumar | - |
| dc.date.accessioned | 2015-08-31T11:24:15Z | - |
| dc.date.available | 2015-08-31T11:24:15Z | - |
| dc.date.issued | 2014-09 | - |
| dc.identifier.issn | 0975-0991 (Online); 0971-457X (Print) | - |
| dc.identifier.uri | http://hdl.handle.net/123456789/32131 | - |
| dc.description | 379-385 | en_US |
| dc.description.abstract | Synthesis of xylene by transalkylation of 1, 2, 4 trimethylbenzene with toluene over cerium modified beta zeolite has been investigated in the present study. The reaction has been carried out in a fixed bed down-flow reactor. The effect of various process parameters: temperature (623-723K), reactant ratio (0.5-4) and space time (0.88-2.9 kg h/kmol), on the toluene conversion and xylene selectivity are investigated. Zeolites with different amount of cerium loading (4.12 wt%, 6.54 wt%, 8.1 wt% and 10.34 wt%) have been prepared and characterized. Zeolite having 8.1wt% cerium loading is proved to be the most active catalyst. Maximum toluene conversion of 58.77% is achieved at a temperature-698K, reactant ratio–3:1, space time-2.9 kg h/kmol. The kinetic runs have been carried out to choose the zone in which the mass transfer effects are negligible. Based on product distribution, a mechanism for the formation of xylene over the modified catalyst is proposed along with a rate expression. The kinetic and adsorption constants of the rate equations are estimated by non-linear regression. The activation energy is found to be 122.41 kJ/mol which compares well with those reported in the literature for transalkylation reaction over similar catalysts. | en_US |
| dc.language.iso | en_US | en_US |
| dc.publisher | NISCAIR-CSIR, India | en_US |
| dc.rights |  CC Attribution-Noncommercial-No Derivative Works 2.5 India | en_US |
| dc.source | IJCT Vol.21(5-6) [September-November 2014] | en_US |
| dc.subject | Beta zeolite | en_US |
| dc.subject | Cerium | en_US |
| dc.subject | Kinetic modeling | en_US |
| dc.subject | Transalkylation | en_US |
| dc.subject | Xylene | en_US |
| dc.title | Synthesis of xylene over cerium modified large pore zeolite: A kinetic study | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | IJCT Vol.21(5-6) [September-November 2014] | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCT 21(5-6) 379-385.pdf | 165.94 kB | Adobe PDF | View/Open |
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