Aromatization of dimethyl and diethyl ethers on Mo2C-promoted ZSM-5 catalysts

Kecskeméti, Anita; Barthos, Róbert; Solymosi, F.

doi:10.1016/j.jcat.2008.06.003

Cited by 47 publications

(28 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In previous study we found that Mo 2 C on this zeolite influenced only little the conversion of DME measured for pure ZSM-5, but enhanced the formation of xylene and C 9? aromatics [27]. We observed now a similar promoting effect particularly for ZnO-, and Mo 2 C-containing samples.…”

Section: Catalytic Studiessupporting

confidence: 80%

“…The desorption of benzene occurred below 450 K. The fact that the peak temperatures for DME and its decomposition products were not affected by benzene may indicate that there are no interaction between DME and benzene in the adsorbed layer. This is confirmed by FTIR spectroscopic studies, which showed only the absorption bands belonging to undissociated DME, methoxy and methyl species [27,31,32], which were not affected by benzene. On ZSM-5(280) we measured much less amounts of DME, alkenes and n-butane desorbed.…”

Section: Tpd and Ftir Measurementssupporting

confidence: 59%

“…are formed [27,31,32], the reaction of which may lead to the formation of C-C bond. Besides, the hydrocarbon-pool mechanism has also gained increasing acceptance [16,39].…”

Section: Catalytic Studiesmentioning

confidence: 99%

“…In the continuation of our research program in this area, recently we examined the aromatization of dimethyl and diethyl ether on promoted-ZSM-5 [27]. The reaction of both ethers occurred with higher yields on Mo 2 C-containing ZSM-5 zeolite.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dimethyl Ether as a Source of Reactive Species for Alkylation of Benzene

Széchenyi

Solymosi

2008

Catal Lett

View full text Add to dashboard Cite

The co-reaction of dimethyl ether and benzene has been investigated on pure and promoted-ZSM-5 catalysts at 473-773 K. It was found that the addition of benzene to dimethyl ether markedly increased the formation of toluene, xylene and C 9 aromatics on ZSM-5 at and above 623 K. This feature is attributed to the reaction of benzene with the reactive hydrocarbon species formed in the decomposition of dimethyl ether on the acidic sites of ZSM-5 zeolite. The extent of the enhancement was further increased by ZnO and Mo 2 C promoters.

show abstract

Section: Catalytic Studiessupporting

confidence: 80%

Section: Tpd and Ftir Measurementssupporting

confidence: 59%

“…are formed [27,31,32], the reaction of which may lead to the formation of C-C bond. Besides, the hydrocarbon-pool mechanism has also gained increasing acceptance [16,39].…”

Section: Catalytic Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dimethyl Ether as a Source of Reactive Species for Alkylation of Benzene

Széchenyi

Solymosi

2008

Catal Lett

View full text Add to dashboard Cite

show abstract

“…In the effort to develop new process for aromatic hydrocarbons production to replace crude oil, catalytic aromatization of alcohols and ethers have attracted great attention. It has been shown that modified ZSM-5 is the most effective catalyst in the aromatization of alcohols [15][16][17][18][19][20] and ethers [21]. However, serious concerns remain about the relative low selectivity to useful BTX and long-term stability of the ZSM-5 catalyst due to fast coke formation [13,16,17].…”

Section: Introductionmentioning

confidence: 99%

High selective and stable performance of catalytic aromatization of alcohols and ethers over La/Zn/HZSM-5 catalysts

Peng

Sun

et al. 2010

Journal of Industrial and Engineering Chemistry

View full text Add to dashboard Cite

Recent Advances in Direct Synthesis of Value‐Added Aromatic Chemicals from Syngas by Cascade Reactions over Bifunctional Catalysts

2019

View full text Add to dashboard Cite

Value‐added aromatic monomers such as benzene, toluene, and xylenes (BTX) are very important building‐block chemicals for the production of plastics, polymers, solvents, pesticides, dyes, and adhesives. Syngas‐to‐aromatics (STA) is a very promising approach for the synthesis of aromatic monomers, and is catalyzed via bifunctional catalysts in a single reactor, wherein methanol/dimethyl ether and/or olefins intermediates formed from syngas on metal components are converted into aromatic monomers exclusively on the HZSM‐5 by cascade reactions. Since an optimal Fischer–Tropsch synthesis (FTS) temperature of Fe‐based catalysts is very close to an aromatization temperature of HZSM‐5, Fe‐based catalysts have been frequently used/modified for the synthesis of aromatic monomers from hydrogenation of carbon oxides (CO and CO2). The nature of metal components and amounts of Brönsted acid sites on HZSM‐5, and their mesoporosity and intimacy, significantly alter the selectivity for aromatics by tuning BTX distibution and catalyst stability. Although many developments have been achieved regarding the STA process in recent years, no reviews have been published in this flourishing research area over the last two decades. Here, the recent advances and forthcoming challenges in the progress of syngas (CO+H2) chemistry and hydrogenation of CO2 toward the value‐added aromatic monomers through cascade reactions are highlighted.

show abstract

Aromatization of dimethyl and diethyl ethers on Mo2C-promoted ZSM-5 catalysts

Cited by 47 publications

References 51 publications

Dimethyl Ether as a Source of Reactive Species for Alkylation of Benzene

Dimethyl Ether as a Source of Reactive Species for Alkylation of Benzene

High selective and stable performance of catalytic aromatization of alcohols and ethers over La/Zn/HZSM-5 catalysts

Recent Advances in Direct Synthesis of Value‐Added Aromatic Chemicals from Syngas by Cascade Reactions over Bifunctional Catalysts

Contact Info

Product

Resources

About