Reaction pathway and kinetics of C3–C7 olefin transformation over high-silicon HZSM-5 zeolite at 400–490°C

Huang, Xun; Aihemaitijiang, Dilireba; Xiao, Wen‐De

doi:10.1016/j.cej.2015.05.124

Cited by 77 publications

(127 citation statements)

References 37 publications

(72 reference statements)

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“…The ones by Epelde et al [235], Ying et al [236] and Huang et al [166] depict manifold olefin interconversion reactions over ZSM-5. All three have comparable numeric approaches and especially the studies by Ying et al [236] and Huang et al [166] are very similar, although the latter includes a mechanistic approach. The next section groups the models by Borges et al [165] and Oliveira et al [237] over ZSM-5.…”

Section: Kinetic Models For Olefin Crackingmentioning

confidence: 99%

“…Due to of the latter fact, the estimated rate constant is an apparent value that includes adsorption effects. This could lead to negative activation energies, especially when more than one reactant is required in the adsorbed state [166].…”

Section: Olefin Crackingmentioning

confidence: 99%

“…673-763 K 1.013 bar 0.131 bar 0.23 h (1) 0.16 h (1) 0.07 h (1) 0.10 h (1) 0.04 h (1) Huang [166] 3 NW (2) 4 NW (2) 5 NW (2) 6 NW (2) 7 NW (2) 673…”

Section: Modelunclassified

“…The authors [166] chose a commercial ZSM-5 catalyst by Shanghai Fuyu Company due to its coking resistance and high propene to ethene ratio. As shown in Table 1, the increased Si/Al ratio (200) caused a low number of acid sites (0.012 mmol g −1 cat ).…”

Section: Huang Et Al: Six-lump Approach For Arbitrary Olefin Feeds Imentioning

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: Kinetic Models For Olefin Crackingmentioning

confidence: 99%

Section: Olefin Crackingmentioning

confidence: 99%

“…673-763 K 1.013 bar 0.131 bar 0.23 h (1) 0.16 h (1) 0.07 h (1) 0.10 h (1) 0.04 h (1) Huang [166] 3 NW (2) 4 NW (2) 5 NW (2) 6 NW (2) 7 NW (2) 673…”

Section: Modelunclassified

Section: Huang Et Al: Six-lump Approach For Arbitrary Olefin Feeds Imentioning

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 experiments have been carried out under atmospheric pressure in the xed-bed reactor described in a previous article. 21 The U-shaped reactor was made of titanium with an internal diameter of 6 mm and a length of 1 m and was located in a salt bath heated by electric resistance, which provided uniform reaction temperature. Catalyst powder was diluted by quartz sand and loaded in the middle section of reactor.…”

Section: Catalyst Testmentioning

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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Modeling and analysis of the Lurgi‐type methanol to propylene process: Optimization of olefin recycle

Huang

et al. 2016

AIChE Journal

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This work proposed a strategy to improve the yield of light olefins of industrial methanol to propylene process by reducing the olefins recycled back into the main reactor and appending an olefin cracking reactor. The heterogeneous fixed‐bed model was employed to simulate the reactors with a robust mathematical procedure developed to determine the reactor configuration and the recycle flow rates of the olefins. Two methods were proposed for the modulation: the recycle ratio and species of the olefins, respectively. Results show that the yield of C2–C3 olefins can be improved up to 70% from the basement of about 60% when the ratio is reduced from 100% to less than 23% or when only butene apart from pentene and hexene is recycled back into the main reactor, and the latter method is more effective as its catalyst requirement is seven times less than the former's in the appended cracking reactor. © 2016 American Institute of Chemical Engineers AIChE J, 63: 306–313, 2017

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Reaction pathway and kinetics of C3–C7 olefin transformation over high-silicon HZSM-5 zeolite at 400–490°C

Cited by 77 publications

References 37 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

Modeling and analysis of the Lurgi‐type methanol to propylene process: Optimization of olefin recycle

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Reaction pathway and kinetics of C3–C7 olefin transformation over high-silicon HZSM-5 zeolite at 400–490°C

Cited by 77 publications

References 37 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

Modeling and analysis of the Lurgi‐type methanol to propylene process: Optimization of olefin recycle

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