Reactivity of Ga2O3 Clusters on Zeolite ZSM-5 for the Conversion of Methanol to Aromatics

López-Sánchez, José Antonio; Conte, Marco; Landon, Phil; Zhou, Wu; Bartley, Jonathan K.; Taylor, Stuart Hamilton; Carley, Albert Frederick; Kiely, Christopher J.; Karim, Khalid; Hutchings, Graham J.

doi:10.1007/s10562-012-0869-2

Cited by 62 publications

(76 citation statements)

References 36 publications

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“…1 The dope of metal on ZSM-5 improved the dehydrogenation activity of the catalyst and, consequently, increased the yield of aromatics. [2][3][4][5][6][7][8][9][10][11][12][13] As a result, the weight ratio of aromatics in liquid organic product in methanol to aromatics (MTA) process was around 90%, which is far higher than that(about 35%) in methanol to gasoline (MTG) process and that (50-65%) in catalytic reforming of naphtha. [1][2][3][4][5][6][7][8][9][10][11][12][13] In addition, the selectivity to para-xylene (PX) in xylene (X) in the MTA product is 23-24%, which is higher than that (around 18%) from the catalytic reforming of naphtha.…”

Section: Introductionmentioning

confidence: 98%

Increasing para-Xylene Selectivity in Making Aromatics from Methanol with a Surface-Modified Zn/P/ZSM-5 Catalyst

et al. 2015

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We report a ZSM-5 based catalyst with surface modification of SiO 2 to increase the selectivity of para-xylene (PX) in xylene (X) in the methanol-to-aromatics process. The effect of acid strength and acid amount in HZSM-5, Zn/P/ZSM-5, and Zn/ P/Si/ZSM-5 on the catalytic performance, including methanol conversion, aromatic yield, and PX selectivity, were studied. The total acid strength and acid amount of the catalyst were crucial for high methanol conversion (around 100%) and high yield of aromatics (>60%), whereas weak external acid sites present in a small amount played an important role in increasing the PX selectivity (in the X isomers) from the usual 23−24% to 89.6%. The results validated the use of a catalyst having a core with strong acid sites in a large amount and an external shell with weak acid sites in a small amount. The contribution of the external surface reaction, including alkylation, isomerization, and dealkylation, to the PX selectivity was evaluated by using PX or ortho-X separately as feedstock. A Zn/P/Si/ZSM-5 catalyst worked well in continuous reaction/catalyst-regeneration cycles, and it also converted recycled toluene into PX by an alkylation route.

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Section: Introductionmentioning

confidence: 98%

Increasing para-Xylene Selectivity in Making Aromatics from Methanol with a Surface-Modified Zn/P/ZSM-5 Catalyst

et al. 2015

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“…Reducing the aromatic content in the produced fuels is very important to http address the global more strict environmental regulations. In the past few years, more continuous researches were reported on the modification of HZSM-5 by various metal oxide composites, such as CuO [21], ZnO/CuO [8] and Ga 2 O 3 [22,23], as well as acid or alkali treatment [2,24] in MTG process. Most studies revealed that the acidic properties and mesopore formation of ZSM-5 catalysts were well altered, and the diffusion properties of the pore channels were improved.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of nanocrystalline H[Fe, Al]ZSM-5 zeolites for conversion of methanol to gasoline

Miao

et al. 2015

Energy Conversion and Management

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“…Both MTG and MTA, but especially MTA, research has mainly focused on modified MFI‐type catalysts . Investigations on modifying the zeolite with metal oxides such as Cu, Ni, Ag,, Ga, or Zn, agree that addition of these oxides provides further acid or basic sites to the zeolite materials resulting in increased activity and selectivity towards the aromatic products. For example, Inoue et al .…”

Section: Methanol To Aromaticsmentioning

confidence: 99%

Biomass‐Derived Renewable Aromatics: Selective Routes and Outlook for p‐Xylene Commercialisation

2016

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Methylbenzenes are among the most important organic chemicals today and, among them, p-xylene deserves particular attention because of its production volume and its application in the manufacture of polyethylene terephthalate (PET). There is great interest in producing this commodity chemical more sustainably from biomass sources, particularly driven by manufacturers willing to produce more sustainable synthetic fibres and PET bottles for beverages. A renewable source for p-xylene would allow achieving this goal with minimal disruption to existing processes for PET production. Despite the fact that recently some routes to renewable p-xylene have been identified, there is no clear consensus on their feasibility or implications. We have critically reviewed the current state-of-the-art with focus on catalytic routes and possible outlook for commercialisation. Pathways to obtain p-xylene from a biomass-derived route include methanol-to-aromatics (MTA), ethanol dehydration, ethylene dimerization, furan cycloaddition or catalytic fast pyrolysis and hydrotreating of lignin. Some of the processes identified suggest near-future possibilities, but also more speculative or longer-term sources for synthesis of p-xylene are highlighted.

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Reactivity of Ga2O3 Clusters on Zeolite ZSM-5 for the Conversion of Methanol to Aromatics

Cited by 62 publications

References 36 publications

Increasing para-Xylene Selectivity in Making Aromatics from Methanol with a Surface-Modified Zn/P/ZSM-5 Catalyst

Increasing para-Xylene Selectivity in Making Aromatics from Methanol with a Surface-Modified Zn/P/ZSM-5 Catalyst

Hydrothermal synthesis of nanocrystalline H[Fe, Al]ZSM-5 zeolites for conversion of methanol to gasoline

Biomass‐Derived Renewable Aromatics: Selective Routes and Outlook for p‐Xylene Commercialisation

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