Single-Event MicroKinetics (SEMK) for Methanol to Hydrocarbons (MTH) on H-ZSM-23

Kumar, P.; Thybaut, Joris W.; Teketel, Shewangizaw; Svelle, Stian; Beato, Pablo; Olsbye, Unni; Marin, Guy

doi:10.1016/j.cattod.2013.02.017

Cited by 24 publications

(16 citation statements)

References 39 publications

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“…On all these zeolite types, deactivation is significant which is why the different approaches accounting for this fact should be compared. Both models by Gayubo et al [255,259] are comparable to the ZSM-5 case, whereas the microkinetic studies of Alwahabi and Froment [258] and Kumar et al [146] are subsequent models to Park and Froment [132,254] and Kumar et al [19] over ZSM-5, respectively. Table 3.…”

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

confidence: 88%

“…The five lump version additionally has the advantage that the lower olefins are split up to separate lumps. Finally, Kumar et al [146] took advantage of the effect that selectivity is independent of coking at a certain conversion level. Through a linear approach, they could convert data at specific TOS to the performance of a fresh catalyst.…”

Section: Discussionmentioning

confidence: 99%

“…Its channels are one-dimensional with an opening of 5.2 × 4.5 Å [141]. This accelerates deactivation, but also yields more higher and branched olefins, which are suitable for gasoline production [146,147].…”

Section: Zeolitesmentioning

confidence: 99%

“…Instead, these are replaced by reactions of the aromatic hydrocarbon pool. The last subsection involves different zeolites: Gayubo et al [255], Ying et al [256], Chen et al [257] and Alwahabi and Froment [258] describe MTO over SAPO-34, whereas another model by Gayubo et al [259] and another one by Kumar et al [146] are valid over SAPO-18 and over ZSM-22, respectively. On all these zeolite types, deactivation is significant which is why the different approaches accounting for this fact should be compared.…”

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

confidence: 99%

“…The authors [146] used a commercial ZSM-23 sample without any binder provided by Zeolyst International. The relatively low Si/Al ratio of 26 caused a high number of acid sites (0.62 mol kg −1 cat ).…”

Section: Catalystmentioning

confidence: 99%

See 4 more Smart Citations

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

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Zeolitesmentioning

confidence: 99%

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

confidence: 99%

Section: Catalystmentioning

confidence: 99%

See 3 more Smart Citations

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

Hinrichsen

2018

Catalysts

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Discerning complex reaction networks using automated generators

Vernuccio

Broadbelt

2019

AIChE Journal

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Oxidative Coupling of Methane: Opportunities for Microkinetic Model‐Assisted Process Implementations

2016

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Oxidative coupling of methane is a low‐cost alternative for ethylene production. However, its high exothermicity, complex reaction network, and low selectivity to C2 products require more in‐depth analysis for economically viable process implementation. Microkinetic modeling enables assessment of operating conditions and catalyst properties on the overall performance via elementary gas‐phase and catalytic reactions. The know‐how to reproduce and interpret experimental kinetic data, especially the role of highly reactive intermediate species, is crucial for correct reaction network determination. Once the catalyst descriptors, physical catalyst properties, and operating conditions are determined and optimized, next catalyst generations can be developed tailored to the process implementation.

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Single-Event MicroKinetics (SEMK) for Methanol to Hydrocarbons (MTH) on H-ZSM-23

Cited by 24 publications

References 39 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

Discerning complex reaction networks using automated generators

Oxidative Coupling of Methane: Opportunities for Microkinetic Model‐Assisted Process Implementations

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