Process Studies on the Conversion of Methanol to Gasoline

Chang, Clarence D.; Kuo, Jui‐Chao; Lang, William W.; Jacob, S. M.; Wise, J.J.; Silvestri, A.J.

doi:10.1021/i260067a008

Cited by 136 publications

(70 citation statements)

References 3 publications

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“…In the interpretation of this finding we have to take into account the reaction pathway of DME. The conversion of DME to olefins (DTO process) is closely related to the methanol to olefins (MTO process) [16,[33][34][35][36][37][38][39][40][41]. The key step in both cases is the formation of C-C bond.…”

Section: Catalytic Studiesmentioning

confidence: 99%

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

Széchenyi

Solymosi

2008

Catal Lett

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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.

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Section: Catalytic Studiesmentioning

confidence: 99%

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

Széchenyi

Solymosi

2008

Catal Lett

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“…From the data ranged from 2005 to 2013, the apparent consumption of raw petroleum increased year by year, the world's industrial production depended heavily on fossil fuels for energy, such as coal, petroleum and natural gas. Due to the increasing price of crude oil and the demand for light olefins, as well as the larger demand for propylene than ethylene, a growing number of researchers were dedicating to developing the non-oil route for producing low carbon olefins, in especial, propylene [1][2][3][4][5][6][7][8]. The development of methanol-to-olefins (MTO) process can effectively reduce the dependence on oil resources in the propylene industrial [1,4,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of magnesium modification over H-ZSM-5 in methanol to propylene reaction

et al. 2015

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H-ZSM-5-based catalyst is a recognized catalyst which is particularly selective towards the formations of light olefins in the methanol reaction. A series of H-ZSM-5 (SiO 2 /Al 2 O 3 = 38) modified with different amounts of magnesium have been investigated. All the samples were characterized by X-ray diffraction instrument (XRD), temperature-programmed desorption of NH 3 (NH 3 -TPD) and Fourier Transform Infrared Spectoscopy (FT-IR). The results indicated that the impregnation of H-ZSM-5 (SiO 2 /Al 2 O 3 = 38) zeolite with various magnesium loading amount significantly affected the strength of acid sites and decreased the concentration of both weak and strong acid sites. As a result of modification, magnesium mainly interacted with strong Brønsted acid sites, thus generated new medium strong acid sites and enhanced the yield of propylene. The optimum acid property for methanol to propylene (MTP) reaction was gotten over 4.0 Mg-ZSM-5 (4.0 wt% Mg) zeolite catalyst. The maximum yield of propylene was 10.62 wt% over 4.0 Mg-ZSM-5 zeolite catalyst by the 30 min on stream. Coke which was mostly formed on strong Brønsted acid sites, would cause the catalysts deactivation, so the reduction of strong Brønsted acid sites could enhance the catalytic stability.

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“…The most important approach for the transformation of methane into liquid hydrocarbons is the well-established and already commercially proven route: [16] methane!syngas!methanol!gasoline, based on the methanol-to-gasoline (MTG) process developed by Mobil. [16][17][18] In 1985, Mobil successfully operated a commercial plant in New Zealand for MTG conversions. However, its operation had to be discontinued as a result of unfavorable process economics.…”

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confidence: 99%

Simultaneous Conversion of Methane and Methanol into Gasoline over Bifunctional Ga‐, Zn‐, In‐, and/or Mo‐Modified ZSM‐5 Zeolites

2005

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In response to increased energy demands, worldwide efforts have been made over the past 2-3 decades to develop alternative methods for the conversion of methane (a main constituent of natural gas, coal-bed gas, and biogas) into value-added products. These include ethylene (by oxidative coupling of methane), [1][2][3] syngas (by partial oxidation with or without simultaneous steam-and/or CO 2 -mediated methane reformation), [4][5][6][7][8] and gasoline/liquid hydrocarbon fuels [9][10][11][12][13][14] that involve either oxidative [1][2][3][4][5][6][7][8][9][10] or nonoxidative [11][12][13][14][15] methane activation. As methane and carbon dioxide are key greenhouse gases responsible for global warming, the current industrial practice of emission and/or flaring of produced methane will be banned in the near future. The methane produced in remote places must therefore be converted into easily transportable energy sources like liquid hydrocarbon fuels at the sites of methane production. The most important approach for the transformation of methane into liquid hydrocarbons is the well-established and already commercially proven route: [16] methane!syngas!methanol!gasoline, based on the methanol-to-gasoline (MTG) process developed by Mobil. [16][17][18] In 1985, Mobil successfully operated a commercial plant in New Zealand for MTG conversions. However, its operation had to be discontinued as a result of unfavorable process economics. [18][19][20] The cost of the syngas production step (by steam reforming) is about twice the cost of the MTG production step.The MTG process could become economically viable if it were possible to convert a significant portion of the methane into gasoline without the intermediate steps of conversion into syngas and methanol. Herein, we show that this very difficult goal can be met through the nonoxidative activation of methane and its simultaneous conversion with methanol into gasoline-range hydrocarbons over bifunctional Ga-, In-, Zn-, and/or Mo-modified ZSM-5 type zeolites that have both dehydrogenation and acid functions. We also show that the amount of methane converted can be equimolar to the amount of methanol converted in this novel process, depend-

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Process Studies on the Conversion of Methanol to Gasoline

Cited by 136 publications

References 3 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

Effect of magnesium modification over H-ZSM-5 in methanol to propylene reaction

Simultaneous Conversion of Methane and Methanol into Gasoline over Bifunctional Ga‐, Zn‐, In‐, and/or Mo‐Modified ZSM‐5 Zeolites

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