Direct Dimethyl Ether (DME) synthesis from natural gas

Ogawa, T.; Inoue, Norio; Shikada, T.; Inokoshi, Osamu; Ohno, Yotaro

doi:10.1016/s0167-2991(04)80081-8

Cited by 87 publications

(111 citation statements)

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“…The 2 catalyst external surface area and micropore volume were calculated using deBoer t-plot 3 method [52]. 4 The prepared samples were analyzed by X-ray diffraction using PANalytical X'pert 5 PRO MPD diffractometer with Cu-Kα monochromatized radiation (λ = 1.5418 Å, 45 kV, 40 6 mA). The measurements were performed in the range of Bragg's angles 2θ = 5-50°, step size 7 of 0.0167°, time per step of 99.68 s. 8…”

Section: Characterization 17mentioning

confidence: 99%

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Cai

Palčić

Subramanian

et al. 2016

Journal of Catalysis

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Section: Characterization 17mentioning

confidence: 99%

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Cai

Palčić

Subramanian

et al. 2016

Journal of Catalysis

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“…The different technological options of each step, as well as the recycling options are summarized in Figure 1. The process layout is similar to the one developed in (Gassner and Maréchal, 2009b) for the syngas production 1 and in (Hamelinck et al, 2004;Hamelinck and Faaij, 2002;Ogawa et al, 2003) for FT, MeOH and DME synthesis respectively. The investigated alternatives assembled by dashed lines in Figure 1 for the main process steps are described in the following Section 3.2.…”

Section: Process Block Flow Superstructurementioning

confidence: 99%

“…Two reaction routes from syngas can be distinguished: the classical two step route (Eq.7) where the formation of methanol proceeds in an autothermal reactor and the methanol dehydration in a separate fixed bed reactor, and the direct one-step synthesis of DME from syngas (Eq.6) performed in a single slurry phase reactor stage (Olofsson et al, 2005;Ogawa et al, 2003).…”

Section: Gas Cleaning and Treatmentmentioning

confidence: 99%

Thermochemical production of liquid fuels from biomass: Thermo-economic modeling, process design and process integration analysis

Tock

Gassner

Maréchal

2010

Biomass and Bioenergy

214

136

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A detailed thermo-economic model combining thermodynamics with economic analysis and considering different technological alternatives for the thermochemical production of liquid fuels from lignocellulosic biomass is presented. Energetic and economic models for the production of Fischer-Tropsch fuel (FT), methanol (MeOH) and dimethyl ether (DME) by the means of biomass drying with steam or flue gas, directly or indirectly heated fluidized bed or entrained flow gasification, hot or cold gas cleaning, fuel synthesis and upgrading are reviewed and developed. The process is integrated and the optimal utility system is computed. The competitiveness of the different process options is compared systematically with regard to energetic, economic and environmental considerations. At several examples, it is highlighted that process integration is a key element that allows for considerably increasing the performance by optimal utility integration and energy conversion. The performance computations of some exemplary technology scenarios of integrated plants yield overall energy efficiencies of 59.8% (crude FT-fuel), 52.5% (MeOH) and 53.5% (DME), and production costs of 89, 128 and 113 e·M W h −1 on fuel basis. The applied process design approach allows to evaluate the economic competitiveness compared to fossil fuels, to study the influence of the biomass and electricity price and to project for different plant capacities. Process integration reveals in particular potential energy savings and waste heat valorization. Based on this work, the most promising options for the polygeneration of fuel, power and heat will be determined in a future thermo-economic optimization.

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“…[6][7][8][9][10] Hybrid catalytic systems comprising a heterogeneous Cu-based methanol synthesis catalyst and a solid acid as methanol dehydration catalyst are well suited for the direct DME synthesis process. Most often, the well-known heterogeneous Cu-ZnO-Al 2 O 3 ternary methanol catalyst is combined with -Al 2 O 3 or zeolites for methanol dehydration.…”

Section: Introductionmentioning

confidence: 99%

A one-step Cu/ZnO quasi-homogeneous catalyst for DME production from syn-gas

García‐Trenco

White

Shaffer

et al. 2016

Catal. Sci. Technol.

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ARTICLEThis journal is © The Royal Society of Chemistry 20xxJ. Name., 2013, 00, 1-3 | 1 Please do not adjust marginsPlease do not adjust margins a. Department of Chemistry, Imperial College London, South Kensington, London, UK, SW7 2AZ; c.k.williams@imperial.ac A simple one-pot synthetic method allows the preparation of hybrid catalysts, based on colloidal Cu/ZnO nanoparticles (NPs), used for the liquid phase synthesis of DME from syngas. The method obviates the high temperature calcinations and pre-reduction treatments typically associated with such catalysts. The hybrid catalysts are applied under typical industrially relevant conditions. The nature of the hybrid catalysts, the influence of the acid component, mass ratio between components, and Cu/Zn composition are assessed. The best catalysts comprise a colloidal mixture of Cu/ZnO NPs, as the methanol synthesis component, and -Al2O3, as the methanol dehydration component. These catalysts show high DME selectivity (65-70 %C). Interestingly, the activity (relative to Cu content) is up to three times higher than that for the reference hybrid catalyst based on the commercial Cu/ZnO/Al2O3 methanol synthesis catalyst. The hybrid catalysts are stable for at least 20 h time-on-stream, not showing any significant sintering of the Cu 0 phase. Post-catalysis,TEM/EDX shows that the hybrid catalysts consist of Cu 0 and ZnO NPs with an average size of 5-7 nm with -Al2O3 particles in close proximity.

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Direct Dimethyl Ether (DME) synthesis from natural gas

Cited by 87 publications

References 0 publications

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Direct dimethyl ether synthesis from syngas on copper–zeolite hybrid catalysts with a wide range of zeolite particle sizes

Thermochemical production of liquid fuels from biomass: Thermo-economic modeling, process design and process integration analysis

A one-step Cu/ZnO quasi-homogeneous catalyst for DME production from syn-gas

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