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<strong>Synthesis of xylene over cerium modified large pore zeolite: A kinetic study</strong>
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| Authentication Code |
dc |
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| Title Statement |
<strong>Synthesis of xylene over cerium modified large pore zeolite: A kinetic study</strong> |
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| Added Entry - Uncontrolled Name |
Thakur, Ruchika ; Thapar University Barman, Sanghamitra ; Thapar University Gupta, Raj Kumar; Thapar University Department of Science and technology, Thapar University |
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| Uncontrolled Index Term |
Cerium; Beta zeolite; Kinetic modelling; Transalkylation; Trimethylbenzene |
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| Summary, etc. |
<span style=""font-size: 11.0pt;" lang=""EN-GB"">S<span style=""font-size: 11.0pt; font-family: ";" lang=""EN-GB"">ynthesis 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 reacto<span style=""font-size: 9.0pt; font-family: ";" lang=""EN-GB"">r<span style=""font-size: 11.0pt;" lang=""EN-GB"">. 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<span style=""font-size: 9.0pt;" lang=""EN-GB"">.<span style=""font-size: 11.0pt; font-family: ";" lang=""EN-GB"">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<span style=""font-size: 9.0pt; font-family: ";" lang=""EN-GB""> k<span style=""font-size: 11.0pt; font-family: ";" lang=""EN-GB"">g 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 expres<span lang=""EN-GB"">sion. The kinetic and adsorption co<span style=""font-size: 11.0pt;" lang=""EN-GB"">nstants 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 simi<span style=""font-size: 9.0pt; font-family: ";" lang=""EN-GB"">lar catal<span lang=""EN-GB"">ysts.</span></span></span></span></span></span></span></span></span></span></span></span> |
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| Publication, Distribution, Etc. |
Indian Journal of Chemical Technology (IJCT) 2016-05-18 10:37:07 |
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| Electronic Location and Access |
application/x-download http://op.niscair.res.in/index.php/IJCT/article/view/6164 |
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| Data Source Entry |
Indian Journal of Chemical Technology (IJCT); ##issue.vol## 21, ##issue.no## 5-6 (2014): Indian Journal of Chemical Technology |
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| Language Note |
en |
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