The direct synthesis of dimethyl ether (DME) on bifunctional catalysts is highly attractive for valorizing CO2 and syngas derived from biomass gasification a key process to reduce greenhouse gas emissions. DME economy (conventionally based its use as fuel) arouses growing interest, in parallel with the development different routes conversion into hydrocarbons (fuels chemicals) H2 production. Th...

In the present work, renewable oxygenates 2,5-dimethylfuran (DMF) and dimethyl ether (DME) are considered as alternatives to fossil fuels for gasoline engines. The effects of blending DMF DME on combustion surrogate numerically studied. is toluene primary reference fuel (TPRF) mixtures containing iso-octane, n-heptane, toluene. Two skeletal mechanisms proposed analysis: mechanism A with 504 spe...

The impacts of different fuel injection timings (base (15BTDC) and retarded (12BTDC)) on a single cylinder common rail direct (CRDI) compression ignition (CI) engine under dual mode (DME-diesel) was examined at the maximum torque with speed 2200 rpm. diesel (liquid) directly injected into engine’s end stroke Dimethyl ether (gas) intake system during suction stroke. DME energy share (DME ES) b...

Autoignition delay times of ammonia/dimethyl ether (NH3/DME) mixtures were measured in a rapid compression machine with DME fractions 0, 2 and 5 100% the fuel. The measurements performed at equivalence ratios φ=0.5, 1.0 2.0 pressures range 10–70 bar; depending on fuel composition, temperatures after varied from 610 K to 1180 K. Admixture is seen have dramatic effect ignition time, effectively s...

The amount of pollutant gases in the atmosphere has reached a critical state due to an increase in industrial development and the rapid growth of automobile industries that use fossil fuels. The combustion of fossil fuels produces harmful gases such as carbon dioxide, nitrogen monoxide (NO), soot, particulate matter (PM), etc. The use of Dimethyl Ether (DME) biofuel in diesel engines or other c...

Rechargeable Mg-ion batteries typically suffer from either rapid passivation of the Mg anode or severe corrosion current collectors by halogens within electrolyte, limiting their practical implementation. Here, we demonstrate broadly applicable strategy forming an artificial solid electrolyte interphase (a-SEI) layer on to address these challenges. The a-SEI is formed simply soaking foil in a t...

The effect of olefin addition to a stream dimethyl ether on the methanol homologation reaction is investigated using iron-substituted zeolites Fe-beta and Fe-ZSM-5. was plug-flow microreactors in temperature range 240–400 °C, at total pressure 0.239 MPa WHSV 6.12 (g DME/g cat -hr). For (Si/Fe= 9.2) catalysts, isobutene co-feeding almost doubles (DME) consumption rate shifts selectivity towards ...

Biomethane, as a replacement for natural gas, reduces the use of fossil-based sources and supports the intended change from fossil to bio-based industry. The study assessed different biomethane utilization routes for production of methanol, dimethyl ether (DME), and ammonia, as fuel or platform chemicals and combined heat and power (CHP). Energy efficiency and environmental impacts of the diffe...

Macroalgae are one of potential sources for carotenoids, such as fucoxanthin, which are consumed by humans and animals. This carotenoid has been applied in both the pharmaceutical and food industries. In this study, extraction of fucoxanthin from wet brown seaweed Undaria pinnatifida (water content was 93.2%) was carried out with a simple method using liquefied dimethyl ether (DME) as an extrac...

The laminar flame speed of Dimethyl Ether (DME)/air mixtures at room temperature and atmospheric pressure were determined experimentally over an extensive range of equivalence ratios, with and without 15% nitrogen dilution, using Particle Image Velocimetry (PIV) and a stagnation flame burner configuration. The laminar flame speeds were determined by linear extrapolation of the measured referenc...