Perspective of dimethyl ether as fuel: Part I. Catalysis

Mondal, Ujjal; Yadav, Ganapati D.

doi:10.1016/j.jcou.2019.02.003

Cited by 101 publications

(79 citation statements)

References 224 publications

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“…acetic acid and ethers oxygenates). China is the biggest dimethyl ether producer employing 90% of its productivity in liquid petroleum gas blending (Mondal and Yadav 2019).…”

Section: Methanol Synthesismentioning

confidence: 99%

Recent advances in carbon capture storage and utilisation technologies: a review

et al. 2020

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Human activities have led to a massive increase in $$\hbox {CO}_{2}$$ CO 2 emissions as a primary greenhouse gas that is contributing to climate change with higher than $$1\,^{\circ }\hbox {C}$$ 1 ∘ C global warming than that of the pre-industrial level. We evaluate the three major technologies that are utilised for carbon capture: pre-combustion, post-combustion and oxyfuel combustion. We review the advances in carbon capture, storage and utilisation. We compare carbon uptake technologies with techniques of carbon dioxide separation. Monoethanolamine is the most common carbon sorbent; yet it requires a high regeneration energy of 3.5 GJ per tonne of $$\hbox {CO}_{2}$$ CO 2 . Alternatively, recent advances in sorbent technology reveal novel solvents such as a modulated amine blend with lower regeneration energy of 2.17 GJ per tonne of $$\hbox {CO}_{2}$$ CO 2 . Graphene-type materials show $$\hbox {CO}_{2}$$ CO 2 adsorption capacity of 0.07 mol/g, which is 10 times higher than that of specific types of activated carbon, zeolites and metal–organic frameworks. $$\hbox {CO}_{2}$$ CO 2 geosequestration provides an efficient and long-term strategy for storing the captured $$\hbox {CO}_{2}$$ CO 2 in geological formations with a global storage capacity factor at a Gt-scale within operational timescales. Regarding the utilisation route, currently, the gross global utilisation of $$\hbox {CO}_{2}$$ CO 2 is lower than 200 million tonnes per year, which is roughly negligible compared with the extent of global anthropogenic $$\hbox {CO}_{2}$$ CO 2 emissions, which is higher than 32,000 million tonnes per year. Herein, we review different $$\hbox {CO}_{2}$$ CO 2 utilisation methods such as direct routes, i.e. beverage carbonation, food packaging and oil recovery, chemical industries and fuels. Moreover, we investigated additional $$\hbox {CO}_{2}$$ CO 2 utilisation for base-load power generation, seasonal energy storage, and district cooling and cryogenic direct air $$\hbox {CO}_{2}$$ CO 2 capture using geothermal energy. Through bibliometric mapping, we identified the research gap in the literature within this field which requires future investigations, for instance, designing new and stable ionic liquids, pore size and selectivity of metal–organic frameworks and enhancing the adsorption capacity of novel solvents. Moreover, areas such as techno-economic evaluation of novel solvents, process design and dynamic simulation require further effort as well as research and development before pilot- and commercial-scale trials.

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“…acetic acid and ethers oxygenates). China is the biggest dimethyl ether producer employing 90% of its productivity in liquid petroleum gas blending (Mondal and Yadav 2019).…”

Section: Methanol Synthesismentioning

confidence: 99%

Recent advances in carbon capture storage and utilisation technologies: a review

et al. 2020

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“…5,6,26,30,[59][60][61][62][63][64][65][66][67] DME synthesis, however, is far from equilibrium for all catalyst compositions and the DME yield keeps increasing with temperature. 6,68 Despite the fact that the temperature for methanol dehydration is generally higher, 4,27,31,69 direct DME synthesis is often performed at temperatures of around 250°C, 5,6,26,[59][60][61][62] not only because the methanol synthesis is considered to be the rate determining step in direct DME…”

Section: Steam Adsorbentmentioning

confidence: 99%

“…This deactivation can be caused by the competing adsorption of water, dimers, trimers, or even larger alcohol-water clusters, but also the (reversible) formation of (surface) boehmite was shown. 27 Despite the large attention for more active low-temperature methanol dehydration catalysts, 4,6,59,69,71,73,74,[76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94][95] γ-Al 2 O 3 remains the catalyst of choice for industrial DME production, due to its low cost, high surface area, good thermal and mechanical stability, and high selectivity to DME because its relatively weak Lewis acid sites do not promote side reactions. 4,70,96,97 In contrast to direct DME synthesis, SEDMES offers two specific advantages for the (γ-Al 2 O 3 ) catalyst: the system is operated at low steam pressures and is periodically regenerated due to its adsorptive nature.…”

Section: Steam Adsorbentmentioning

confidence: 99%

“…[1][2][3] Conventionally, DME is produced from synthesis gas with methanol as an intermediate chemical. Indirect DME production comprises the production of intermediate methanol (1,2), and methanol dehydration (4). The incomplete methanol and DME yields require extensive separation sections and recycles.…”

Section: Introductionmentioning

confidence: 99%

“…The single-step direct DME synthesis proceeds via intermediate methanol as well, yet offers a reduction in process steps and increased overall conversion to DME. [4][5][6][7] Although the direct DME synthesis process outperforms the indirect process in terms of efficiency, separation and recycling remain a requirement. In the direct DME synthesis, the O-surplus of the feed ends up in CO 2 , resulting in equal molar amounts of DME and CO 2 produced.…”

Section: Introductionmentioning

confidence: 99%

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Sorption enhanced dimethyl ether synthesis under industrially relevant conditions: experimental validation of pressure swing regeneration

et al. 2021

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Non‐Oxidative Conversion of Methanol to Dimethyl Ether, Methyl Formate and Dimethoxymethane over Cu/Hβ Catalyst: Tailoring Product Selectivity

Simitsis,

Mebrahtu,

Palkovits

2024

ChemCatChem

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Herein, we present the production of either dimethyl ether (DME), methyl formate (MF) or dimethoxymethane (DMM), representing pivotal molecules for the green transformation of fuels and chemical industry, by the non‐oxidative gas‐phase conversion of methanol under the same reaction conditions. The product selectivity is optimized by tailoring the acidic and dehydrogenative sites of the bifunctional Cu/Hβ catalyst system by varying the SiO2/Al2O3 ratio of the Hβ zeolite (25 and 520) and the Cu loading (0.5 and 20 wt.%). At 240 °C, >99% (DME), 74.5% (MF), and 77.3% (DMM) selectivity is achieved with the respective catalysts 0.5%Cu/Hβ(25), 20%Cu/Hβ(520), and 0.5%Cu/Hβ(520). High acidic site concentration catalyzes DME formation, while the presence of Cu+ species is crucial for DMM formation, and Cu0 species mainly catalyze MF formation. A highly dynamic reaction behaviour is observed, when the dehydrogenative functionality is dominant (i.e., in the production of MF or DMM), presumably due to the dynamic nature of the Cu oxidation state, which is in turn influenced by possible by‐products (H2 and H2O). While the catalytic activity in DME synthesis over 0.5%Cu/Hβ(25) is remarkably stable over 1500 min TOS, the activity in MF and DMM production over 0.5%Cu/Hβ(520) and 20%Cu/Hβ(520), respectively, can be successfully regenerated.

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Perspective of dimethyl ether as fuel: Part I. Catalysis

Cited by 101 publications

References 224 publications

Recent advances in carbon capture storage and utilisation technologies: a review

Recent advances in carbon capture storage and utilisation technologies: a review

Sorption enhanced dimethyl ether synthesis under industrially relevant conditions: experimental validation of pressure swing regeneration

Non‐Oxidative Conversion of Methanol to Dimethyl Ether, Methyl Formate and Dimethoxymethane over Cu/Hβ Catalyst: Tailoring Product Selectivity

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