Catalytic Transformations of Ethanol for Biorefineries

Gallo, Jean Marcel R.; Bueno, J.M.C.; Schuchardt, Ulf

doi:10.5935/0103-5053.20140272

Cited by 46 publications

(66 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In conclusion, according to a recent review [2] ethanol production and its future potential exceeds its exponentially increasing use as fuel, leaving room for a considerable improvement of its use as chemical. However, in order to propose a suitable alternative for existing, well conceived catalysts and optimised processes should be proposed.…”

Section: Page 21 Of 49mentioning

confidence: 99%

“…When the reaction is carried out at 150 -300 °C, DEE is a byproduct, but at higher temperature it is readily converted to ethylene. As recalled in the introduction, competing byproducts are acetic acid, ethyl acetate, acetaldehyde, acetone, methanol, methane, propane, propylene, butane, butenes, hydrocarbons, carbon dioxide, carbon monoxide and hydrogen [2]. Therefore, besides activity, a considerable selectivity improvement would enhance process sustainability by limiting the ethylene purification costs.…”

Section: -Activity Testingmentioning

confidence: 99%

“…Commonly, when the reaction is carried out at 150 -300 °C, diethyl ether is the main product. At higher temperature, ethylene selectivity increases, but it decays at temperature higher than 400 -500°C due to formation of higher hydrocarbons and aromatics [2,[16][17][18][19]. Many byproducts are reported, such as acetic acid, ethyl acetate, A c c e p t e d M a n u s c r i p t 7 acetaldehyde, acetone, methanol, methane, propane, propylene, butane, butenes, hydrocarbons, carbon dioxide, carbon monoxide and hydrogen, besides possible coke formation by surface polymerisation of ethylene.…”

mentioning

confidence: 99%

“…Summaries of the catalytic performance of different zeolites have been reported [2,14,20,21] and very recently reviewed by Sun and Wang [22]. Alumina is the most used and investigated catalyst for this application.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Ethylene production via catalytic dehydration of diluted bioethanol: A step towards an integrated biorefinery

Rossetti

Compagnoni

Finocchio

et al. 2017

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

After a preliminary thermodynamic investigation, proper operating conditions have been selected to maximise ethylene productivity by ethanol dehydration and limit side products such as coke and higher olefins or oxygenates. We focused on the possibility to operate with a diluted bioethanol solution (ca. 50 wt%), which represents a promising and convenient raw material, obtainable by simple flash concentration of the fermentation broth. Furthermore, water addition to the ethanol dehydration reactor may help preventing catalyst coking and diethyl ether formation, although affecting the thermodynamic products distribution. A proof of concept for an ethanol dehydration process using diluted ethanol is also provided through process simulation. Catalysts based on a BEA zeolite have been compared, characterised by different acidity imparted by dealumination treatments. Ni addition in variable loading helped suppressing undesired byproducts, difficult to separate from ethylene. For instance, no trace of diethyl ether nor acetaldehyde has been observed for the Ni-loaded samples under optimised working conditions. Catalyst characterisation by FT IR allowed correlating a high selectivity to ethylene with the acid sites nature of the catalyst, whereas the presence of extraframework Lewis acidic sites induced faster coke formation. Durability was finally checked on the most active and selective catalyst evidencing stable operation for 80 h-on-stream and without evidence of coke deposition, as determined after characterisation of the spent samples. A γ-Al2O3 catalyst has been tested as benchmark under the same conditions

show abstract

Section: Page 21 Of 49mentioning

confidence: 99%

Section: -Activity Testingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Ethylene production via catalytic dehydration of diluted bioethanol: A step towards an integrated biorefinery

Rossetti

Compagnoni

Finocchio

et al. 2017

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

show abstract

“…But following the exploitation of fossil fuels during the 1900s, biomass utilisation had declined sharply [52], except for a few cases that is worth mentioning. For example, during and after the aforementioned period, biomass usage was constant or even on the increased in the timber and fibre industries [128], during the 1930s agricultural surplus in the USA [129] and during World War II petroleum shortages in Europe [130]. As one of the twenty-first century human goal to reduce society's climate footprint and other environmental burdens, there is now a renewed interest in biomass, sparked by the aim to achieve a more secure supply of resources and to encourage the bioeconomy [21,25,30,32].…”

Section: Introductionmentioning

confidence: 99%

Utilisation of Lignins in the Bioeconomy: Projections on Ionic Liquids and Molecularly Imprinted Polymers for Selective Separation and Recovery of Base Metals and Gold

Ndibewu¹,

Tchieta²

2018

Lignin - Trends and Applications

View full text Add to dashboard Cite

A brief review has been herein done of technologies involved in the exploitation of lignin, in order to provide an introduction to the subject from the perspective of a fast technologically advancing economy. Lignocellulosic materials and biomass have historically been utilised from since time memorial, but a new conversation is emerging on the role of these materials in modern bioeconomies. This new discourse needs to help us understand how technologies for managing and processing lignocellulosic materials both as biosynthetic moieties, biogenic wastes or simply renewable biopolymer-both established and novel-should be deployed and integrated (or not) to meet developmental requirements of the sustainability paradigm. The world is caught in the middle of green technology advocating for more and more focus on renewable sources of manufacturing raw materials and that of the molecularly imprinted/synthesised or genetically engineered ones. The utilisation of lignins (from renewable sources) in both the industry as the base for the formulation of ionic liquids (with yet a wider industrial applications), and also is a potential scaffold material for functionally modified imprinted polymers (LCIPS) for the selective recovery of base metals and gold, respectively, evidently incorporates the bioeconomy aspirations.

show abstract

Bio‐ethylene from sugarcane as a competitiveness strategy for the Brazilian chemical industry

Souza

Rochedo

Bhardwaj³

et al. 2019

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

The urgency with which the world economy needs to be decarbonized could lead to the emergence of regions with the capacity to produce renewable feedstock such as biomass. The competitiveness of these regions could result from their ability to produce high value‐added chemicals at the lowest cost. The biomass embodied in a chemical product could reduce carbon emissions, leading to net CO2 removal. The aim of this study was to test the hypothesis that bio‐ethylene could make the Brazilian chemical industry more competitive. This would be achieved by applying the revenues from carbon credits associated with using ethanol and sugarcane bagasse as feedstocks for bio‐ethylene production. Three production routes were compared according to their estimated cost of production in Brazil under a simplified life‐cycle analysis: sugar‐cane‐derived ethanol to ethylene (with and without CO2 capture and storage – BECCS); bio‐methanol to olefin; and conventional steam cracking of naphtha. When associated with the production of long‐lasting materials, the ethanol‐to‐ethylene with BECCS route achieved the lower CO2 break‐even price (US$75/t CO2), followed by ethanol to ethylene without BECCS (US$82/t CO2) and bio‐methanol to ethylene (US$106/t CO2). Our findings highlight the advantage for the Brazilian chemical industry of implementing a national or, even better, a global carbon‐pricing instrument. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

show abstract

Catalytic Transformations of Ethanol for Biorefineries

Cited by 46 publications

References 1 publication

Ethylene production via catalytic dehydration of diluted bioethanol: A step towards an integrated biorefinery

Ethylene production via catalytic dehydration of diluted bioethanol: A step towards an integrated biorefinery

Utilisation of Lignins in the Bioeconomy: Projections on Ionic Liquids and Molecularly Imprinted Polymers for Selective Separation and Recovery of Base Metals and Gold

Bio‐ethylene from sugarcane as a competitiveness strategy for the Brazilian chemical industry

Contact Info

Product

Resources

About