The thermal hydrodealkylation of 2-ethylnaphthalene (BEN) has been studied in a tubular flow reactor, at effective reaction temperatures in the range from 570 to 710°C. Total pressure ranged from 2.9 to 44.6 atm, and H2/hydrocarbon molar ratio in the feed was varied from 3 to 10. Main products were naphthalene (N), 2-methylnaphthalene (BMN) and 2-vinylnaphthalene. The latter is the product of a dehydrogenation which is strongly depressed at pressures larger than 20 atm. Kinetic results in the high-pressure region have been interpreted according to a scheme of three parallel-consecutive reactions (BEN → BMN; BMN → N; BEN → N) assuming rate equations of the form r = kCarommCH2n. Arrhenius parameters and partial reaction orders were obtained that reproduce experimental molar conversions ± 15% on the average.
Hydrodealkylation of 2-Ethylnaphthalene. A Study of Reaction Products and Kinetics / P. Beltrame, P. Carniti, B. Marongiu, L. Mura, V. Solinas, S. Mori. - In: INDUSTRIAL & ENGINEERING CHEMISTRY PROCESS DESIGN AND DEVELOPMENT. - ISSN 0196-4305. - 18:2(1979), pp. 338-342. [10.1021/i260070a030]
Hydrodealkylation of 2-Ethylnaphthalene. A Study of Reaction Products and Kinetics
P. BeltramePrimo
;P. CarnitiSecondo
;
1979
Abstract
The thermal hydrodealkylation of 2-ethylnaphthalene (BEN) has been studied in a tubular flow reactor, at effective reaction temperatures in the range from 570 to 710°C. Total pressure ranged from 2.9 to 44.6 atm, and H2/hydrocarbon molar ratio in the feed was varied from 3 to 10. Main products were naphthalene (N), 2-methylnaphthalene (BMN) and 2-vinylnaphthalene. The latter is the product of a dehydrogenation which is strongly depressed at pressures larger than 20 atm. Kinetic results in the high-pressure region have been interpreted according to a scheme of three parallel-consecutive reactions (BEN → BMN; BMN → N; BEN → N) assuming rate equations of the form r = kCarommCH2n. Arrhenius parameters and partial reaction orders were obtained that reproduce experimental molar conversions ± 15% on the average.
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