Chemistries and processes for the conversion of ethanol into middle-distillate fuels

Eagan, Nathaniel M.; Kumbhalkar, Mrunmayi D.; Buchanan, J. Scott; Dumesic, James A.; Huber, George W.

doi:10.1038/s41570-019-0084-4

Cited by 157 publications

(135 citation statements)

References 237 publications

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“…The conversion of ethanol into gasoline-range hydrocarbons over the H-ZSM5 zeolite was already reported many years ago [24] and is considered today as a potential way for the production of renewable fuels [25]. In Figure 4, the ethanol conversion and selectivities to main products over the H-ZSM5 zeolite (Si/Al 2 = 50) are reported as a function of reaction temperature.…”

Section: Ethanol To Hydrocarbonsmentioning

confidence: 78%

Heterogeneous Catalysis in (Bio)Ethanol Conversion to Chemicals and Fuels: Thermodynamics, Catalysis, Reaction Paths, Mechanisms and Product Selectivities

et al. 2020

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In gas/solid conditions, different chemicals, such as diethylether, ethylene, butadiene, higher hydrocarbons, acetaldehyde, acetone and hydrogen, can be produced from ethanol with heterogeneous catalytic processes. The focus of this paper is the interplay of different reaction paths, which depend on thermodynamic factors as well as on kinetic factors, thus mainly from catalyst functionalities and reaction temperatures. Strategies for selectivity improvements in heterogeneously catalyzed processes converting (bio)ethanol into renewable chemicals and biofuels are also considered.

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Section: Ethanol To Hydrocarbonsmentioning

confidence: 78%

Heterogeneous Catalysis in (Bio)Ethanol Conversion to Chemicals and Fuels: Thermodynamics, Catalysis, Reaction Paths, Mechanisms and Product Selectivities

et al. 2020

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“…The ATJ route represents an interesting approach to overcome these limitations by converting an oxygenated fuel into a mixture of hydrocarbons 100% compatible with the current transportation infrastructure. An excellent review on the catalytic routes available to convert ethanol into diesel and jet fuels was recently published by Eagan et al [76]. Butanol is less miscible with water and, although it possesses higher energy density than ethanol, its energy content is still well below that of conventional jet fuel (33 vs. 42 MJ/kg).…”

Section: Alcohol To Jet Fuelsmentioning

confidence: 99%

Catalytic Production of Jet Fuels from Biomass

Díaz‐Pérez

Serrano‐Ruiz

2020

Molecules

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Concerns about depleting fossil fuels and global warming effects are pushing our society to search for new renewable sources of energy with the potential to substitute coal, natural gas, and petroleum. In this sense, biomass, the only renewable source of carbon available on Earth, is the perfect replacement for petroleum in producing renewable fuels. The aviation sector is responsible for a significant fraction of greenhouse gas emissions, and two billion barrels of petroleum are being consumed annually to produce the jet fuels required to transport people and goods around the world. Governments are pushing directives to replace fossil fuel-derived jet fuels with those derived from biomass. The present mini review is aimed to summarize the main technologies available today for converting biomass into liquid hydrocarbon fuels with a molecular weight and structure suitable for being used as aviation fuels. Particular emphasis will be placed on those routes involving heterogeneous catalysts.

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“…Bio-ethanol produced from renewable biomass using fermentative approaches is an important commercially available biofuel [1,2]. Though widely used, it has some major drawbacks, such as a lower energy density (70%), a higher vapor pressure, and higher water solubility than gasoline [3].…”

Section: Introductionmentioning

confidence: 99%

Catalyst Performance Studies on the Guerbet Reaction in a Continuous Flow Reactor Using Mono- and Bi-Metallic Cu-Ni Porous Metal Oxides

Sun

Cao

et al. 2020

Catalysts

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Higher alcohols like 1-butanol are considered important biofuels with superior properties compared to the more readily available bio-ethanol. An attractive route to prepare 1-butanol from ethanol is the Guerbet reaction. We here report the use of hydrotalcite-derived mono- (Cu-PMO or Ni-PMO) and bi-metallic (CuNi-PMO) porous metal oxide catalysts for the Guerbet coupling of ethanol to 1-butanol in a continuous flow reactor (320 °C, 0.1 MPa, LHSV = 15 mL g−1 h−1) at extended times on stream (~160 h). Two distinct regimes with different product distributions were observed for the Cu-PMO and CuNi-PMO catalyst with time on stream. At the start of the run, the initial conversion of ethanol dropped from about 85% to less than 20% after 60 h and acetaldehyde was the main product (regime 1). At prolonged times on stream (60–160 h), fairly constant low conversions of ethanol (14%) were observed and 1-butanol was the main product (regime 2). Performance of the monometallic Cu-PMO catalyst in terms of 1-butanol yield and stability was lower compared to the bi-metallic CuNi-PMO. Detailed catalyst characterization studies (XRD, H2-TPR, sorption of acrylic acid, TGA, TEM, HAADF-STEM, and EDS mapping) on both fresh and spent CuNi-PMO taken at various times on stream was performed to determine the changes in catalyst morphology and composition during a run, and particularly to obtain information on changes in catalyst structure operating in regime 1 or 2. The change in chemoselectivity is in line with an increase in basicity of the catalyst at extended runtimes.

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Chemistries and processes for the conversion of ethanol into middle-distillate fuels

Cited by 157 publications

References 237 publications

Heterogeneous Catalysis in (Bio)Ethanol Conversion to Chemicals and Fuels: Thermodynamics, Catalysis, Reaction Paths, Mechanisms and Product Selectivities

Heterogeneous Catalysis in (Bio)Ethanol Conversion to Chemicals and Fuels: Thermodynamics, Catalysis, Reaction Paths, Mechanisms and Product Selectivities

Catalytic Production of Jet Fuels from Biomass

Catalyst Performance Studies on the Guerbet Reaction in a Continuous Flow Reactor Using Mono- and Bi-Metallic Cu-Ni Porous Metal Oxides

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