Study of the role of Zn in aromatization of light alkanes with probe molecules

Smiešková, Agáta; Rojasová, Edita; Hudec, Pavol; Šabo, L.

doi:10.1023/b:reac.0000034831.45769.ff

Cited by 23 publications

(12 citation statements)

References 7 publications

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“…) were formed in a lower abundance. Furthermore, the C 8 –C 10 aromatics range turned out to be the most abundant range in contrast to that reported in previous studies where C 6 –C 8 BTEX were the most abundant products resulting from the zeolite‐facilitated reforming reactions (Bhan and Delgass, ; Fegade et al, ; Hodala et al, ; Long et al, , ; Nash et al, ; Olson et al, ; Smiešková et al, ), although a relatively large C 9 aromatic fraction was observed in the case of n ‐octene conversion (Long et al, ), corroborating the results obtained in our study.…”

Section: Resultscontrasting

confidence: 87%

“…Recent research has primarily focused on the production of aromatic compounds from light alkanes and alkenes (Bhan and Delgass, ; Smiešková et al, ). ZSM‐5 catalysts, either in their plain hydrogen form or doped with transition metals (Ga, Zn), have been shown to be efficient catalysts for facilitating the aromatization of light alkenes such as ethene, propene, and butene (Fegade et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…This particular zeolite proved to be most selective, as both the BTEX products and the anticipated C 2 intermediates are known to fit perfectly into this zeolite's cavity (Olson et al, ). Indeed, BTEX has been shown to be the primary class of cyclic products generated, with toluene being the main product within the BTEX group (Bhan and Delgass, ; Fegade et al, ; Hodala et al, ; Smiešková et al, ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Initial Study of the Catalytic Reforming of Crop Oil‐Derived 1‐Alkenes with HZSM‐5 to Aromatic Hydrocarbons

Amsley‐Benzie

Fegade

Tande

et al. 2018

J Americ Oil Chem Soc

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This study explored the production of aromatic hydrocarbons from the longer-chain alkenes produced by the pyrolysis/cracking of crop oils. 1-Tetradecene, serving as a model compound for these alkenes, was reformed in a batch reactor with a HZSM-5 catalyst to produce a liquid hydrocarbon mixture with a high-aromatic content. These reactions resulted in a >99% conversion of the 1-tetradecene feedstock with a yield of up to 22 wt% of aromatic hydrocarbons. Surprisingly, isomers of C 3substituted benzenes along with xylenes and diaromatics (lower homologs of alkyl-substituted indanes and naphthalenes) were the main aromatic products rather than their lower-molecular-weight (MW) homologs, benzene, toluene, ethylbenzene and xylenes, which are commonly formed with high selectivity during zeolite-catalyzed reforming. The recovery of higher-MW aromatics, and particularly bicyclic naphthalenes and indanes, provides mechanistic insights for zeolite-catalyzed alkene reforming reactions suggesting that these higher-MW aromatics are likely formed near the catalyst surface at pore openings. Furthermore, the production of acyclic diene intermediates in the size range of C 7 -C 10 provides insight into the overall reaction pathway. The results suggest that this reaction pathway may be a commercially viable option for the production of renewable C 3 -substituted aromatic chemicals/ chemical intermediates as coproducts to complement the kerosene and diesel fuel blendstocks that are the primary products from crop oil cracking.

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Section: Resultscontrasting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Initial Study of the Catalytic Reforming of Crop Oil‐Derived 1‐Alkenes with HZSM‐5 to Aromatic Hydrocarbons

Amsley‐Benzie

Fegade

Tande

et al. 2018

J Americ Oil Chem Soc

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“…This fact can be explained by enhancement of the alkylation reactions of the reac tant aromatic sulfur compound. In addition, propy lene, which is produced in a large amount during the primary cracking of cumene [16,17], is likely to undergo the aromatization reaction, as can be con cluded from the group composition of cracking prod ucts ( Table 3).…”

Section: Resultsmentioning

confidence: 99%

Influence of [H]-donating activity of hydrocarbons on transformations of thiophene compounds under catalytic cracking conditions

2012

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Transformations of 2 methylthiophene and benzothiophene together with n undecane, declaim, or cumene under conditions of catalytic cracking have been studied. It has been found that enhancement of the [H] donating activity in the order cumene < n undecane < decalin leads to an increase in the degree of conversion of organic sulfur compounds, predominantly yielding hydrogen sulfide. An increase in the amount of 2 methylthiophene and benzothiophene alkylation and condensation products in the liquid prod ucts of cracking is observed in this case. Schemes of conversion of these compounds under catalytic cracking conditions have been proposed. The dependence of the degree of conversion of thiophene compounds into hydrogen sulfide on the ability of the catalyst to mediate hydrogen transfer reactions has been revealed.

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“…The process with balanced aromatization and isomerization at a moderate temperature (300-400°C) is an attractive alternative to reduce the olefin content in FCC (fluid catalytic cracking) gasoline [1][2][3]. Outstanding aromatization and isomerization activities have been found over the ZSM-5 zeolite, but the catalyst tends to be deactivated by coke and finding ways to prolong the catalyst lifetime still remains a major challenge [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Promoted aromatization and isomerization performance over ZSM-5 zeolite modified by the combined alkali-steam treatment

Liu

Xie

et al. 2009

React Kinet Catal Lett

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Study of the role of Zn in aromatization of light alkanes with probe molecules

Cited by 23 publications

References 7 publications

An Initial Study of the Catalytic Reforming of Crop Oil‐Derived 1‐Alkenes with HZSM‐5 to Aromatic Hydrocarbons

An Initial Study of the Catalytic Reforming of Crop Oil‐Derived 1‐Alkenes with HZSM‐5 to Aromatic Hydrocarbons

Influence of [H]-donating activity of hydrocarbons on transformations of thiophene compounds under catalytic cracking conditions

Promoted aromatization and isomerization performance over ZSM-5 zeolite modified by the combined alkali-steam treatment

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