Kinetics of methanol to olefins over AlPO4-bound ZSM-5 extrudates in a two-stage unit with dimethyl ether pre-reactor

Menges, Markus; Kraushaar‐Czarnetzki, Bettina

doi:10.1016/j.micromeso.2012.07.012

Cited by 32 publications

(31 citation statements)

References 34 publications

(87 reference statements)

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“…For industrial use, zeolites are often mixed with binders which provide a mesoporous surrounding of the crystals. This can also affect the catalytic performance [138,139]. The resulting extrudates are then formed to the desired pellet shape.…”

Section: Zeolitesmentioning

confidence: 99%

“…This section presents all kinetic models for a feed of pure oxygenates, i.e., methanol or DME, which means that an initiation phase should be visible for short contact times (see Section 2.4.2). The first subsection contains the models by Menges and Kraushaar-Czarnetzki [139] and Jiang et al [251] over ZSM-5 where methanol and DME are summarized to one lump, which means no differentiation of their reactivity is possible. The next subsection contains the models by Gayubo et al [114], Aguayo et al [252] and Pérez-Uriarte et al [253], which are all created by the same research group.…”

Section: Kinetic Models For Methanol-to-olefins Without Olefin Co-feedmentioning

confidence: 99%

“…Menges [139] MeOH (8) 28 MD (4) No Kumar [19] MNW (4) 633-753 K 1.04 bar -6.5 kg cat s mol −1 C 0.7 8 (9) 29 --LLEH (8) 27 MD (4) No Gayubo [255] MW (3,4) 623-748 K --0.44 g cat h g −1 HM (4,11) 673-823 K -0.072-0.830 bar 0.02 h (12) (8) 25 MD (4) No Gayubo [259,260] MW (3,4) 598-748 K --0.68 g cat h g −1 MeOH 0.9 (8) 27 MD (4) No…”

Section: Modelmentioning

confidence: 99%

“…In this study [139], a self-extruded catalyst was applied. It consisted of a commercial zeolite from Zeochem and aluminium phosphate from Riedel-de Haen.…”

Section: Catalystmentioning

confidence: 99%

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Kinetic Modeling of Catalytic Olefin Cracking and Methanol-to-Olefins (MTO) over Zeolites: A Review

Hinrichsen

2018

Catalysts

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The increasing demand for lower olefins requires new production routes besides steam cracking and fluid catalytic cracking (FCC). Furthermore, less energy consumption, more flexibility in feed and a higher influence on the product distribution are necessary. In this context, catalytic olefin cracking and methanol-to-olefins (MTO) gain in importance. Here, the undesired higher olefins can be catalytically converted and, for methanol, the possibility of a green synthesis route exists. Kinetic modeling of these processes is a helpful tool in understanding the reactivity and finding optimum operating points; however, it is also challenging because reaction networks for hydrocarbon interconversion are rather complex. This review analyzes different deterministic kinetic models published in the literature since 2000. After a presentation of the underlying chemistry and thermodynamics, the models are compared in terms of catalysts, reaction setups and operating conditions. Furthermore, the modeling methodology is shown; both lumped and microkinetic approaches can be found. Despite ZSM-5 being the most widely used catalyst for these processes, other catalysts such as SAPO-34, SAPO-18 and ZSM-23 are also discussed here. Finally, some general as well as reaction-specific recommendations for future work on modeling of complex reaction networks are given.

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Section: Zeolitesmentioning

confidence: 99%

Section: Kinetic Models For Methanol-to-olefins Without Olefin Co-feedmentioning

confidence: 99%

Section: Modelmentioning

confidence: 99%

“…In this study [139], a self-extruded catalyst was applied. It consisted of a commercial zeolite from Zeochem and aluminium phosphate from Riedel-de Haen.…”

Section: Catalystmentioning

confidence: 99%

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Kinetic Modeling of Catalytic Olefin Cracking and Methanol-to-Olefins (MTO) over Zeolites: A Review

Hinrichsen

2018

Catalysts

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“…Many kinetic models 4,21-25 of methanol conversion over HZSM-5 have been published so far based on different catalysts, feed conditions and mechanism. According to the method and model complexity, they can be mainly categorized into two types: (1) lumping kinetics that treat components with similar reaction behavior as one species and assume reaction routes according to the macroscopic product distribution; 26,27 (2) single-event microkinetics that derive the kinetic equations from the chemical reactions between individual molecules. 28,29 In our previous work, we proposed a detailed kinetic model for the co-reaction of methanol and olens over HZM-5, in which each olen, aromatic and paraffin generation and interconversion are simulated individually.…”

Section: Introductionmentioning

confidence: 99%

Deactivation kinetics of individual C₆–C₉ aromatics' generation from methanol over Zn and P co-modified HZSM-5

Xiao

2019

RSC Adv.

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Application of Response Surface Methodology for the Optimization of Drying Parameters of ZSM‐5 Extruded Catalysts

Tian

2019

ChemistrySelect

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A fundamental step in the fabrication of industrial catalysts is to conduct mechanical properties assessment. In this paper, the mathematical models were adequately developed to optimize the mechanical properties of ZSM-5 extruded catalysts using response surface methodology. And central composite orthogonal design with three parameters viz. drying temperature, drying time, and moisture content was utilized to investigate the effects of drying parameters on the mechanical strength and Weibull modulus. Statistics showed that the responses varied regularly with the development of experiments. And a material with optimal mechanical properties would possess both higher mechanical strength and Weibull modulus. Furthermore, it was found that drying process significantly impacts the morphology of the extruded catalysts, rather than the pore structure through the analysis of scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET). Thus, we concluded that the reduction in surface crack size is the main reason of the improvement of mechanical properties.

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Kinetics of methanol to olefins over AlPO4-bound ZSM-5 extrudates in a two-stage unit with dimethyl ether pre-reactor

Cited by 32 publications

References 34 publications

Kinetic Modeling of Catalytic Olefin Cracking and Methanol-to-Olefins (MTO) over Zeolites: A Review

Kinetic Modeling of Catalytic Olefin Cracking and Methanol-to-Olefins (MTO) over Zeolites: A Review

Deactivation kinetics of individual C₆–C₉ aromatics' generation from methanol over Zn and P co-modified HZSM-5

Application of Response Surface Methodology for the Optimization of Drying Parameters of ZSM‐5 Extruded Catalysts

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Kinetics of methanol to olefins over AlPO4-bound ZSM-5 extrudates in a two-stage unit with dimethyl ether pre-reactor

Cited by 32 publications

References 34 publications

Kinetic Modeling of Catalytic Olefin Cracking and Methanol-to-Olefins (MTO) over Zeolites: A Review

Kinetic Modeling of Catalytic Olefin Cracking and Methanol-to-Olefins (MTO) over Zeolites: A Review

Deactivation kinetics of individual C6–C9 aromatics' generation from methanol over Zn and P co-modified HZSM-5

Application of Response Surface Methodology for the Optimization of Drying Parameters of ZSM‐5 Extruded Catalysts

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About

Deactivation kinetics of individual C₆–C₉ aromatics' generation from methanol over Zn and P co-modified HZSM-5