Synthesis of olefins from dimethyl ether in a synthesis gas atmosphere

Galanova, E.G.; Магомедова, М. В.; Afokin, M. I.; Starozhitskaya, A. V.; Maximov, A. L.

doi:10.1016/j.catcom.2021.106297

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…To achieve this, tests were carried out on a pilot unit and the influence of diffusion effects was determined. A hydrothermally treated Mg-HZSM-5/Al 2 O 3 sample was chosen as an object of the study as a stable under synthesis condition catalyst, in which the performance for the conversion of DME into olefins had been earlier studied by us in a nitrogen atmosphere. , This work can be considered as a continuation of our previous studies of the DME conversion to olefins in various atmosphere compositions …”

Section: Introductionsupporting

confidence: 86%

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Pilot Test of Olefin Synthesis from Dimethyl Ether in a Synthesis Gas Atmosphere

Магомедова

Afokin

Starozhitskaya

et al. 2021

Ind. Eng. Chem. Res.

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The process of olefin synthesis from dimethyl ether was tested on a pilot unit using nitrogen and synthesis gas as a diluent gas. The study was carried out over catalyst Mg-HZSM-5/Al2O3 (150 mL, pellet size of 2.8 x (5–7) mm), and stream temperatures at the fixed-bed reactor inlet were 335 and 355 °C. The effect of diluent gas on the heat exchange in the pilot reactor was demonstrated. The results achieved on the pilot unit were compared with those obtained in the kinetic study on the laboratory unit. The estimation of the effectiveness of porous catalyst Mg-HZSM-5/Al2O3 basic on experimental data and theoretic equation was carried out.

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Section: Introductionsupporting

confidence: 86%

“…35,36 This work can be considered as a continuation of our previous studies of the DME conversion to olefins in various atmosphere compositions. 37…”

Section: Introductionmentioning

confidence: 99%

Pilot Test of Olefin Synthesis from Dimethyl Ether in a Synthesis Gas Atmosphere

Магомедова

Afokin

Starozhitskaya

et al. 2021

Ind. Eng. Chem. Res.

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“…Additionally, DME can be used as a carbon neutral feedstock for production of olefins using a zeolite catalyst. This provides an innovative mechanism for making carbon neutral polymers and other products that are usually derived from petrochemicals (Galanova et al, 2021).…”

Section: Dimethyl Ethermentioning

confidence: 99%

Synthetic Fuels Based on Dimethyl Ether as a Future Non-Fossil Fuel for Road Transport From Sustainable Feedstocks

2021

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In this review we consider the important future of the synthetic fuel, dimethyl ether (DME). We compare DME to two alternatives [oxymethylene ether (OMEx) and synthetic diesel through Fischer-Tropsch (FT) reactions]. Finally, we explore a range of methodologies and processes for the synthesis of DME.DME is an alternative diesel fuel for use in compression ignition (CI) engines and may be produced from a range of waste feedstocks, thereby avoiding new fossil carbon from entering the supply chain. DME is characterised by low CO2, low NOx and low particulate matter (PM) emissions. Its high cetane number means it can be used in CI engines with minimal modifications. The key to creating a circular fuels economy is integrating multiple waste streams into an economically and environmentally sustainable supply chain. Therefore, we also consider the availability and nature of low-carbon fuels and hydrogen production. Reliable carbon dioxide sources are also essential if CO2 utilisation processes are to become commercially viable. The location of DME plants will depend on the local ecosystems and ideally should be co-located on or near waste emitters and low-carbon energy sources. Alternative liquid fuels are considered interesting in the medium term, while renewable electricity and hydrogen are considered as reliable long-term solutions for the future transport sector. DME may be considered as a circular hydrogen carrier which will also be able to store energy for use at times of low renewable power generation.The chemistry of the individual steps within the supply chain is generally well known and usually relies on the use of cheap and Earth-abundant metal catalysts. The thermodynamics of these processes are also well-characterised. So overcoming the challenge now relies on the expertise of chemical engineers to put the fundamentals into commercial practice. It is important that a whole systems approach is adopted as interventions can have detrimental unintended consequences unless close monitoring is applied. This review shows that while DME production has been achieved and shows great promise, there is considerable effort needed if we are to reach true net zero emissions in the transport sector, particularly long-haul road use, in the require timescales.

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“…Therefore, extensive research is needed on the production processes of this potential alternative fuel and the required catalysts. Olefin production from the DME [34] in one step (direct) in the micro-pilot unit was considered by Galanova et al [35]. DME is commonly utilized in the aerosol industry as a propellant instead of ozone-destroying chlorofluorocarbons and in the chemical industry as a methylation agent.…”

Section: Properties and Applications Of Dmementioning

confidence: 99%

Direct catalytic production of dimethyl ether from CO and CO2: A review

Akhoondi

Osman

Eslami³

2021

Synth. Sinter.

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Dimethyl ether (DME) is a synthetically produced alternative fuel to diesel-based fuel and could be used in ignition diesel engines due to increasing energy demand. DME is considered extremely clean transportation and green fuel because it has a high cetane number (around 60), low boiling point (−25 °C), and high oxygen amount (35 wt%) which allow fast evaporation and higher combustion quality (smoke-free operation and 90% fewer NOx emissions) than other alternative CO2-based fuels. DME can be synthesized from various routes such as coal, petroleum, and bio-based material (i.e., biomass and bio-oil). Dimethyl ether can be produced from CO2 to prevent greenhouse gas emissions. This review aims to summarize recent progress in the field of innovative catalysts for the direct synthesis of dimethyl ether from syngas (CO+H2) and operating conditions. The problems of this process have been raised based on the yield and selectivity of dimethyl ether. However, regardless of how syngas is produced, the estimated total capital and operating costs in the industrial process depend on the type of reactor and the separation method.

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Synthesis of olefins from dimethyl ether in a synthesis gas atmosphere

Cited by 13 publications

References 27 publications

Pilot Test of Olefin Synthesis from Dimethyl Ether in a Synthesis Gas Atmosphere

Pilot Test of Olefin Synthesis from Dimethyl Ether in a Synthesis Gas Atmosphere

Synthetic Fuels Based on Dimethyl Ether as a Future Non-Fossil Fuel for Road Transport From Sustainable Feedstocks

Direct catalytic production of dimethyl ether from CO and CO2: A review

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