The Aromatization of Propene Via Nano-Size HZSM-5

Seames, Wayne

doi:10.11648/j.ajac.20180605.13

Cited by 2 publications

(2 citation statements)

References 22 publications

(34 reference statements)

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“…The PR aromatization reactions with various catalysts are explained in some literature. 25,26 They have stated that PR can be converted to aromatic compounds such as BZ and TL during a catalytic aromatization reaction. Considering the operating conditions and information published in the literature, the reactions occurring in this process are listed in Table 1.…”

Section: Experimental and Methodsmentioning

confidence: 99%

“…Oligomer formation by cyclotrimerization reactions, cocyclotrimerization of alkynes and alkaldienes, has been extensively discussed. , In the given reports, a large number of cyclic and aromatic compounds such as BZ and TL can be formed during consecutive complex oligomerization reactions from BD, MA, and PD. The PR aromatization reactions with various catalysts are explained in some literature. , They have stated that PR can be converted to aromatic compounds such as BZ and TL during a catalytic aromatization reaction. Considering the operating conditions and information published in the literature, the reactions occurring in this process are listed in Table .…”

Section: Experimental and Methodsmentioning

confidence: 99%

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Estimation of Kinetic Parameters and Simulation of Methylacetylene and Propadiene Liquid-Phase Selective Hydrogenation Reactor Considering the Catalyst Deactivation

Ghasemigoudarzi

Hojjati

Omidkhah

et al. 2021

Ind. Eng. Chem. Res.

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This paper presents a kinetic study of methylacetylene (MA) and propadiene (PD) liquid-phase selective hydrogenation considering catalyst deactivation. For this purpose, more than 20 000 plant operational data points were collected from two different fixed-bed reactors in an olefin plant during a 14-month run-step. Four different kinetic models were used parametrically in a dynamic reactor simulation. The genetic algorithm (GA) technique was used to estimate the kinetic constant by minimization of the mean relative error (MRE) between the simulation results and plant data. The effects of T inlet , WHSV, H 2 / MAPD, and catalyst deactivation on the reactor performance, propylene (PR) selectivity, PR yield, and other undesired products such as benzene (BZ) and toluene (TL) have been investigated. The average MRE of the reactor temperature, species molar flow, and reactor pressure drop is 3.46, 5.9, and 4.86%, respectively, indicating that the Langmuir−Hinshelwood−Hougen−Watson (LH-HW) type model with hydrogen dissociation fit the experimental data with acceptable accuracy.

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Section: Experimental and Methodsmentioning

confidence: 99%

Section: Experimental and Methodsmentioning

confidence: 99%

Estimation of Kinetic Parameters and Simulation of Methylacetylene and Propadiene Liquid-Phase Selective Hydrogenation Reactor Considering the Catalyst Deactivation

Ghasemigoudarzi

Hojjati

Omidkhah

et al. 2021

Ind. Eng. Chem. Res.

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Influence of Bifunctional PtZn/SiO<sub>2</sub> and H-ZSM-5 Catalyst on the Rates and Selectivity of Propene Aromatization

Russell¹,

Saxena²,

Miller³

2023

Catal Res

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Previous studies on the conversion of olefins to aromatics with bifunctional Ga- or Zn-ZSM-5 catalysts have concluded that benzene, toluene, and xylenes (BTX) yields are significantly higher than for ZSM-5 alone. These results were attributed to the higher aromatic dehydrogenation rate of Ga or Zn. In this study, a highly active, bifunctional PtZn/SiO<sub>2</sub> (1.3 wt% Pt, 2.6 wt% Zn) with H-ZSM-5 (Si/Al = 40) catalyst is investigated for propene aromatization at 723 K and 823 K. At low to moderate propene conversions, in addition to BTX, small alkanes and olefins are produced. Many of these may also be converted to aromatics at higher propene conversion while others are not, for example, methane, ethane and propane. When compared at equivalent space velocity or propene conversion, the bifunctional catalyst has a much higher selectivity to aromatics than ZSM-5; however, when compared at equivalent conversion of all reactive intermediates, the bifunctional catalyst exhibits very similar BTX selectivity. At 723 K, for ZSM-5 the primary non-reactive by-products are propane and butane; while, for the bifunctional catalyst the major non-reactive product is propane. At 823 K, both ZSM-5 and the bifunctional catalyst convert propane and butane to aromatics increasing the aromatic yields, and the by-products are methane and ethane.

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The Aromatization of Propene Via Nano-Size HZSM-5

Cited by 2 publications

References 22 publications

Estimation of Kinetic Parameters and Simulation of Methylacetylene and Propadiene Liquid-Phase Selective Hydrogenation Reactor Considering the Catalyst Deactivation

Estimation of Kinetic Parameters and Simulation of Methylacetylene and Propadiene Liquid-Phase Selective Hydrogenation Reactor Considering the Catalyst Deactivation

Influence of Bifunctional PtZn/SiO<sub>2</sub> and H-ZSM-5 Catalyst on the Rates and Selectivity of Propene Aromatization

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