Kinetic Pecularities of Benzene Production from the Benzene–Toluene–Xylene Fraction of Pyrolysis Gasoline by Catalytic Hydrodealkylation at High Temperature

Alibeyli, Rafig; Yeniova, H.; Koçak, Mehmet Çetin; Karaduman, Ali

doi:10.1081/lft-120017450

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…While benzene and toluene selectivities increased particularly by adding of n-decane, xylene selectivities decreased as a result of consecutive reactions. Similar findings were reported by Alibeyli et al [18] that non-aromatics hydrocarbons such as cyclohexane, hexane accelerated the hydrodealkylation reactions via the contribution of methyl and ethyl radicals formed with thermal or catalytic cracking of non-aromatics. It is reported that the hydrodealkylation mechanism of alkyl-benzene involves free radicals for thermal and carbonium ion mechanism in catalytic reactions [20,21], indicating that both mechanisms in the presence of n-decane over Cr-Al2O3 occur.…”

Section: Activity Results Of Catalysts the Effect Of N-decane On Mesisupporting

confidence: 89%

“…Based on the aforementioned studies, in this study, the effect of catalyst preparation conditions (impregnation time, Cr concentration) and various promoters (V, Cs, Mo and Ni) on the activity and stability of Cr-Al2O3 in the hydrodealkylation of mesitylene (1,3,5trimethylbenzene) was investigated. In addition, n-decane (10 % (mol)) into mesitylene was added in order to enhance hydrodealkylation of alkyl-aromatics via free radicals formed from its hydrocracking [18].…”

Section: Introductionmentioning

confidence: 99%

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Aromatik Karışımların Hidrodealkilasyonuna Katalizör Modifikasyonun Etkisi

Ateş

Yeniova²,

Alibeyli³

2022

Politeknik Dergisi

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Hydrodealkylation of mesitylene in the presence of n-decane to benzene, toluene, and xylenes (BTX) over the promoted Cr-Al2O3 was studied. The effect of reaction temperature, WHSV, impregnation type, and amount of Cr and promoters such as V, Cs, Ni, and Mo on the stability and activıty of Cr-Al2O3 was investigated. The addition of n-decane to mesitylene accelerated the hydrodealkylation activity of Cr-Al2O3 because of the formation of methyl- and ethyl-radicals. The catalyst modified with V and Cs (V-Cs-Cr-Al2O3) has a comparable performance with the commercial catalyst Pyrotol (Houdry, USA) in terms of stability, product selectivity, and reactant conversions.

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Section: Activity Results Of Catalysts the Effect Of N-decane On Mesisupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Aromatik Karışımların Hidrodealkilasyonuna Katalizör Modifikasyonun Etkisi

Ateş

Yeniova²,

Alibeyli³

2022

Politeknik Dergisi

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“…Our previous research investigated (Alibeyli et al, 2003a(Alibeyli et al, , 2003b, kinetic peculiarities of benzene production from the BTX fraction of pyrolysis gasoline over Cr 2 O 3 /Al 2 O 3 catalysis. This work targets the increasing of HDA activities of Cr 2 O 3 /Al 2 O 3 catalyst.…”

Section: Introductionmentioning

confidence: 99%

Poly-functional Catalyst Development for Benzene Production from Alkyl-aromatic Mixture via Hydrodealkylation

Karaduman

Alp

Yeniova

et al. 2007

Petroleum Science and Technology

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Development of a poly-functional catalyst that has higher hydrodealkylation activity based on 15% Cr/γ -Al 2 O 3 was researched for benzene production from an alkyl-aromatic mixture via hydrodealkylation. For this goal, the effects of the promoters like Fe, Co, or Ni and their concentrations on the activity of a Cr/Al 2 O 3 catalyst were investigated. Toluene + n-heptane + tetrahydrotiophene (89:10:1 w%) model mixture, which has the same content as industrial aromatics, was used as feedstock. The activities of catalysis in reactions of hydrodealkylation, hydrocracking, and hydrogenolize with respect to conversions of toluene, heptane, and tetrahydrotiophene were tested, respectively. As to the obtained results, the catalyst including 5% Fe has a higher hydrodealkylation activity, compared to the catalyst including Co, and especially to the alumocrom catalyst not including a promoter, while it has a lower coke formation and reduced activity to the catalyst including Ni.

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Boosting the selectivity of aromatic hydrocarbons via ex-situ catalytic fast pyrolysis of cellulose over Pt–Sn–Ce/γ-Al2O3 catalyst

Wang

et al. 2021

Journal of the Energy Institute

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Kinetic Pecularities of Benzene Production from the Benzene–Toluene–Xylene Fraction of Pyrolysis Gasoline by Catalytic Hydrodealkylation at High Temperature

Cited by 6 publications

References 11 publications

Aromatik Karışımların Hidrodealkilasyonuna Katalizör Modifikasyonun Etkisi

Aromatik Karışımların Hidrodealkilasyonuna Katalizör Modifikasyonun Etkisi

Poly-functional Catalyst Development for Benzene Production from Alkyl-aromatic Mixture via Hydrodealkylation

Boosting the selectivity of aromatic hydrocarbons via ex-situ catalytic fast pyrolysis of cellulose over Pt–Sn–Ce/γ-Al2O3 catalyst

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