Modelling and sensitivity analysis of a nanocomposite MFI-alumina based extractor-type zeolite catalytic membrane reactor for m-Xylene isomerization over Pt-HZSM-5 catalyst

Daramola, Michael O.; Burger, Andries J.; Giroir‐Fendler, A.

doi:10.1016/j.cej.2011.04.014

Cited by 18 publications

(6 citation statements)

References 39 publications

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“…Extensive information on the analysis and modeling of ZCMRs can be obtained from the literature [97,98,99,100,101]. In spite of research efforts in ZCMRs, substantial development and understanding have been hampered by difficulty associated with fabricating and reproducing highly-selective zeolite membranes for ZCMRs applications.…”

Section: Introductionmentioning

confidence: 99%

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Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

2012

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Future production of chemicals (e.g., fine and specialty chemicals) in industry is faced with the challenge of limited material and energy resources. However, process intensification might play a significant role in alleviating this problem. A vision of process intensification through multifunctional reactors has stimulated research on membrane-based reactive separation processes, in which membrane separation and catalytic reaction occur simultaneously in one unit. These processes are rather attractive applications because they are potentially compact, less capital intensive, and have lower processing costs than traditional processes. Therefore this review discusses the progress and potential applications that have occurred in the field of zeolite membrane reactors during the last few years. The aim of this article is to update researchers in the field of process intensification and also provoke their thoughts on further research efforts to explore and exploit the potential applications of zeolite membrane reactors in industry. Further evaluation of this technology for industrial acceptability is essential in this regard. Therefore, studies such as techno-economical feasibility, optimization and scale-up are of the utmost importance.

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Section: Introductionmentioning

confidence: 99%

“…Zeolites have been the major materials employed in the fabrication of inorganic membranes for separation/reactive-separation applications and several reviews on their synthesis and applications have been documented in the open literature [ 18 , 19 , 20 , 21 ]. Zeolites are tridimensional microporous crystalline aluminosilicates.…”

Section: Introductionmentioning

confidence: 99%

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

2012

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“…However, the adsorption/isomerization process is usually preferred due to economic reasons. Despite the huge amount of related studies published during the past 20 years, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] the topic is still hot. The introduction of hierarchical HZSM-5 zeolites has enhanced this academic interest.…”

Section: Introductionmentioning

confidence: 99%

Kinetic modeling of the ethylbenzene/xylene isomerization reaction over HZSM‐5 zeolites revisited

Farahani

Falamaki

Alavi

2020

Int J of Chemical Kinetics

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In this article, a binderless dealuminated HZSM-5 zeolite (Si/Al = 41.4) was used as a catalyst for the isomerization of a mixture of ethylbenzene and xylene. The experimental results indicated that at low residence times the catalyst is effective to isomerize the ethylbenzene into xylenes. A comprehensive kinetic model considering chemisorption, surface chemical reactions, and diffusional processes was developed for this reaction. The intrinsic activation energy (71.99 kJ mol −1 ) for the surface reaction of ethylbenzene into m-xylene was calculated for the first time, and the corresponding intrinsic activation energies for o-xylene to m-xylene and m-xylene to p-xylene surface reactions were calculated to be 59.45 and 50.68 kJ mol −1 , respectively. Lower apparent values have been reported in the literature, and we rationalize that they correspond to multistep processes and intrinsically include a negative activation energy pertaining to chemisorption. The results also revealed that the ethylbenzene diffusion within the zeolite channels was four orders of magnitude smaller than p-xylene.

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“…In this article, we focus on the separation of xylene isomers, which is one of the most energy-intensive separation processes, 23,24 currently accomplished by crystallization 25,26 or adsorption. [27][28][29][30][31][32][33] Separation via membranes has long been studied as a substitute for these technologies, [34][35][36][37][38][39][40][41][42][43] and progress have been achieved based on boriented MFI membranes prepared by gel-free secondary growth of nanosheets. 16,44 A mathematical model that accounts for diffusion through the MFI layer, defects, and support layer, and mass transfer from the vapor bulk phase to the membrane surface is developed.…”

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confidence: 99%

Mathematical modeling and parameter estimation of MFI membranes for para/ortho‐xylene separation

et al. 2021

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Modelling and sensitivity analysis of a nanocomposite MFI-alumina based extractor-type zeolite catalytic membrane reactor for m-Xylene isomerization over Pt-HZSM-5 catalyst

Cited by 18 publications

References 39 publications

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

Kinetic modeling of the ethylbenzene/xylene isomerization reaction over HZSM‐5 zeolites revisited

Mathematical modeling and parameter estimation of MFI membranes for para/ortho‐xylene separation

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