Application of a Simple Lumped Kinetic Model for the Catalytic Cracking Reaction of n-Butane Over the HZSM-5 Zeolite

Roohollahi, Gholamreza; Kazemeini, Mohammad; Mohammadrezaee, Alireza; Golhoseini, R

doi:10.1016/j.proeng.2012.07.404

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…Furthermore, confidence intervals of the estimated parameters were calculated. 49 It has been pointed out that finding the kinetic parameters within the permissible confidence interval is mandatory yet insufficient to prove the parameters to be statistically accurate. 50 To find the statistical accuracy of the estimated parameters (tabulated in Table 2), an additional statistical F-test was performed, and the detailed enumerations related to the F-test are elucidated in Section S.8 of the Supporting Information.…”

Section: Proposed Modelmentioning

confidence: 99%

“…The algorithm of the code is illustrated in Section S.7 of the Supporting Information. Furthermore, confidence intervals of the estimated parameters were calculated . It has been pointed out that finding the kinetic parameters within the permissible confidence interval is mandatory yet insufficient to prove the parameters to be statistically accurate .…”

Section: Reaction Kineticsmentioning

confidence: 99%

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Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu₂O and PbO as Catalysts

Das

Mahajani

2023

Ind. Eng. Chem. Res.

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Styrene oxide (STOX), produced by epoxidation of styrene, is a pivotal building block in perfumery chemical and cosmeceutical industries. Catalytic performances of commercially available cuprous oxide (Cu2O) and lead oxide (PbO) are tested for epoxidation of styrene for selective production of styrene oxide (STOX). Cumene hydroperoxide (CHP) is used as the oxygen-inducing reagent in this study. Parametric study by altering the operating conditions indicates that lower temperature and lesser styrene in the feed aid styrene-based STOX selectivity, whereas there exists no significant effect of the catalyst loading on product selectivity. A maximum of ∼42.5% (∼45% STOX selectivity at ∼95% conversion of styrene) and ∼45% (∼50% STOX selectivity at ∼90% conversion of styrene) product yields have been recorded within 6 h of batch operation for Cu2O and PbO, respectively. Detailed deactivation study shows that the loss of catalyst activity upon reuse can be attributed to the combined effect of leaching of active sites and oxidation of the metal oxide catalyst on account of the oxidative nature of the reaction system. A suitable lumped kinetic model is proposed, which satisfactorily explains the trends in product yield and by/coproduct formation. Kinetic parameters are estimated by nonlinear regression along with a 95% confidence interval. The studies presented in this article can be considered useful for designing a technoeconomically feasible hydroperoxide-based route for the production of STOX as an alternative to the conventional chlorohydrin-based process.

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Section: Proposed Modelmentioning

confidence: 99%

Section: Reaction Kineticsmentioning

confidence: 99%

Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu₂O and PbO as Catalysts

Das

Mahajani

2023

Ind. Eng. Chem. Res.

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Development of coke model for thermal cracking of hydrocarbon fuels under supercritical conditions and its experimental validation

Vuchuru

Dinda

Surasani

2023

Journal of Analytical and Applied Pyrolysis

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Delumping Strategy to Infer Lubrication Reaction Pathways in Internal Combustion Engines

Domínguez-García

Béjar

Huirache–Acuña

et al. 2019

International Journal of Chemical Reactor Engineering

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Lubricant reactions in internal combustion engines follow complex reaction pathways, in which oil (hydrocarbons) and additives form protecting films (known as tribofilms) on the surfaces of the cylinder-piston couple. Up-to-date there is not a fundamental model useful to describe the chemistry involved in formation of these tribofilms, and degradation of oils and additives as result of working time of the engine. One of the main problems associated is the impossible measuring of the actual phenomena inside the engine, at working conditions. In order to model formation of tribofilms, starting by lumping two main groups of lubricating molecules, anti-shear and anti-wear, the lumped kinetics model for degradation products was solved, based on actual data collected in commercial engine workshops. Later these two-lump reaction schemes were delumped into two new systems, each one consisting of three lumps, in order to infer lubricant reaction pathways that form tribofilms and degrade lubricants. Distribution of anti-shear and anti-wear lubricants in tribofilms was predicted by simulation of these two delumped schemes.

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Application of a Simple Lumped Kinetic Model for the Catalytic Cracking Reaction of n-Butane Over the HZSM-5 Zeolite

Cited by 3 publications

References 24 publications

Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu₂O and PbO as Catalysts

Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu₂O and PbO as Catalysts

Development of coke model for thermal cracking of hydrocarbon fuels under supercritical conditions and its experimental validation

Delumping Strategy to Infer Lubrication Reaction Pathways in Internal Combustion Engines

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Application of a Simple Lumped Kinetic Model for the Catalytic Cracking Reaction of n-Butane Over the HZSM-5 Zeolite

Cited by 3 publications

References 24 publications

Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu2O and PbO as Catalysts

Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu2O and PbO as Catalysts

Development of coke model for thermal cracking of hydrocarbon fuels under supercritical conditions and its experimental validation

Delumping Strategy to Infer Lubrication Reaction Pathways in Internal Combustion Engines

Contact Info

Product

Resources

About

Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu₂O and PbO as Catalysts

Cumene Hydroperoxide-Induced Epoxidation of Styrene Using Cu₂O and PbO as Catalysts