Homogeneous charge compression ignition (HCCI) combustion of polyoxymethylene dimethyl ethers (PODE)

Wang, Zhi; Liu, Haoye; Ma, Xiao; Wang, Jianxin; Shuai, Shijin; Reitz, Rolf D.

doi:10.1016/j.fuel.2016.06.033

Cited by 141 publications

(52 citation statements)

References 22 publications

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“…4,5 Their comparatively high oxygen content and the absence of C-C bonds lead to a reduced formation of soot and NO x in the combustion of OME/fuel mixtures. 6 Dimethoxymethane (DMM) as the smallest OME is particularly suitable to study the reactivity of the characteristic methylenedioxy group (O-CH 2 -O). The first kinetic mechanism (511 reactions, 75 species) to describe the oxidation of DMM was developed by Daly et al 7 in 2001.…”

Section: Introductionmentioning

confidence: 99%

Temperature- and pressure-dependent kinetics of the competing C–O bond fission reactions of dimethoxymethane

Golka

Gratzfeld

Weber

et al. 2020

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

Temperature- and pressure-dependent kinetics of the competing C–O bond fission reactions of dimethoxymethane

Golka

Gratzfeld

Weber

et al. 2020

Phys. Chem. Chem. Phys.

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“…Therefore, it is an important factor for methanol chemical process that the catalysts exhibit good hydrothermal stability and appropriate adsorption capacity for hydrophilic and hydrophobic materials. [7][8][9][10][11][12][13][14][15][16] Liu and coworkers 15 studied combustion and emission performance of PODE diesel blends in light-and heavyduty diesel engines. [2][3][4] Polyoxymethylene dimethyl ethers (PODE) with the formula CH 3 O-(CH 2 O) n -CH 3 (n ≥ 2) are a kind of ether without carbon-carbon bonds.…”

Section: Introductionmentioning

confidence: 99%

“…From the industry production perspective, the route of methanol and formaldehyde aqueous solution is a preferable choice for the synthesis of PODE. Six side reactions were observed according to reactions (3) to (8). Six side reactions were observed according to reactions (3) to (8).…”

Section: Introductionmentioning

confidence: 99%

“…5,6 With high cetane number and high oxygen content, PODE is an emerging clean fuel and shows a significant performance to improve combustion efficiency for the diesel engine. [7][8][9][10][11][12][13][14][15][16] Liu and coworkers 15 studied combustion and emission performance of PODE diesel blends in light-and heavyduty diesel engines. The experiment results showed that diesel engines work normally with blend fuel ratio with less than 30% PODE [3][4] by volume, and it improves engine efficiency and reduces soot and CO emissions significantly.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, the formation of methylal and PODE are given by reactions (1) and (2), respectively. Six side reactions were observed according to reactions (3) to (8). 23,27…”

Section: Introductionmentioning

confidence: 99%

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Preparation of a hydrophobic-hydrophilic adjustable catalyst surface for the controlled synthesis of polyoxymethylene dimethyl ethers: A potential replacement of diesel fuel

Zhang

Liu

2017

Int J Energy Res

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Summary Polyoxymethylene dimethyl ethers (PODE) are excellent promising diesel oil additives or replacements because of the special structure without carbon‐carbon bond. A novel solid dichlorodiphenylsilane‐modified ZrO2–γ‐Al2O3 catalyst with both hydrophobic and hydrophilic sites exhibited good catalytic activity and desired product selectivity for the reaction of methanol and formaldehyde aqueous solution to PODE. A single type of active center (only hydrophobic center or hydrophilic center) did not perform well for the PODE synthesize reaction from methanol and formaldehyde because of the different hydrophobic properties of methanol, formaldehyde, methylal, and PODE. The experimental results confirmed that the hydrophobic sites and hydrophilic sites of the catalyst surface promote the synthesis of PODE and methylal, respectively. The enhancement of the hydrophobic property of the catalyst surface promotes the production of long chain PODE. Further study indicated that the product distribution can be controlled artificially by adjusting the content of hydrophobic agent, and the desired polymerization degree of PODE can be optimally synthesized by a modified catalyst (called HYB‐26.9@ZrO2–γ‐Al2O3). Reaction temperature and pressure were also investigated for the PODE synthesis reaction with this modified catalyst, HYB‐26.9@ZrO2–γ‐Al2O3. Low reaction temperature benefits the synthesis of long chain PODE because of the limit of reaction equilibrium. The stability of the catalyst was proven by a 240‐hour running test.

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Renewable OME from biomass and electricity—Evaluating carbon footprint and energy performance

Bokinge

Heyne

Harvey

2020

Energy Science & Engineering

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Renewable drop‐in fuels provide a short‐ to medium‐term solution to decreasing carbon dioxide emissions from the transport sector. Polyoxymethylene ethers (OME) are among interesting candidates with production pathways both from biomass (bio‐OME) as well as electricity and CO2 (e‐OME) proposed. In the present study, both bio‐ and e‐OME production via methanol are assessed for energy performance and carbon footprint. Process integration methods are applied to evaluate synergies from colocating methanol production with further conversion to OME. Even a hybrid process, combing bio‐ and e‐OME production is evaluated. The energy efficiency of bio‐OME is considerably higher than for the e‐OME pathway, and colocation synergies are more evident for bio‐OME. Carbon footprint is evaluated according to EUs recast Renewable Energy Directive (RED II). If renewable electricity and natural gas are used for power and heat supply, respectively, results indicate that all pathways may be counted toward the renewable fuel targets under RED II. The largest emissions reduction is 92.8% for colocated hybrid‐OME production. Carbon footprints of e‐ and hybrid‐OME are highly sensitive to the carbon intensity of electricity, and the carbon intensity of the heat supply has a major impact on results for all pathways except colocated bio‐ and hybrid‐OME.

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Homogeneous charge compression ignition (HCCI) combustion of polyoxymethylene dimethyl ethers (PODE)

Cited by 141 publications

References 22 publications

Temperature- and pressure-dependent kinetics of the competing C–O bond fission reactions of dimethoxymethane

Temperature- and pressure-dependent kinetics of the competing C–O bond fission reactions of dimethoxymethane

Preparation of a hydrophobic-hydrophilic adjustable catalyst surface for the controlled synthesis of polyoxymethylene dimethyl ethers: A potential replacement of diesel fuel

Renewable OME from biomass and electricity—Evaluating carbon footprint and energy performance

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