Catalytic dehydration of bioethanol to ethylene

Yakovleva, I. L.; Банзаракцаева, С. П.; Овчинникова, Е. В.; Чумаченко, В. А.; Исупова, Л. А.

doi:10.1134/s2070050416020148

Cited by 44 publications

(32 citation statements)

References 101 publications

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“…As the zeolite nanocrystals easily aggregate, there can be localized higher densities of strong acid sites prone to coke formation, and, therefore, the n-HZSM-5 can still deactivate significantly over time. On the other side of the spectrum, there is γ-Al2O3, for which no measurable deactivation is observed over 48 h. This is as expected as γ-Al2O3 is known for its high stability under alcohol dehydration conditions [36,57].…”

Section: Catalyst Stabilitysupporting

confidence: 74%

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Renewable Butene Production through Dehydration Reactions over Nano-HZSM-5/γ-Al2O3 Hybrid Catalysts

et al. 2020

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The development of new, improved zeolitic materials is of prime importance to progress heterogeneous catalysis and adsorption technologies. The zeolite HZSM-5 and metal oxide γ-Al2O3 are key materials for processing bio-alcohols, but both have some limitations, i.e., HZSM-5 has a high activity but low catalytic stability, and vice versa for γ-Al2O3. To combine their advantages and suppress their disadvantages, this study reports the synthesis, characterization, and catalytic results of a hybrid nano-HZSM-5/γ-Al2O3 catalyst for the dehydration of n-butanol to butenes. The hybrid catalyst is prepared by the in-situ hydrothermal synthesis of nano-HZSM-5 onto γ-Al2O3. This catalyst combines mesoporosity, related to the γ-Al2O3 support, and microporosity due to the nano-HZSM-5 crystals dispersed on the γ-Al2O3. HZSM-5 and γ-Al2O3 being in one hybrid catalyst leads to a different acid strength distribution and outperforms both single materials as it shows increased activity (compared to γ-Al2O3) and a high selectivity to olefins, even at low conversion and a higher stability (compared to HZSM-5). The hybrid catalyst also outperforms a physical mixture of nano-HZSM-5 and γ-Al2O3, indicating a truly synergistic effect in the hybrid catalyst.

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Section: Catalyst Stabilitysupporting

confidence: 74%

“…To convert alcohols, e.g., ethanol or butanol, to olefins, two catalysts, (i) HZSM-5 and (ii) γ-Al 2 O 3 , are the most investigated materials [30][31][32][33][34][35], and are already used at an industrial scale for ethanol dehydration [32,36]. Although HZSM-5 and γ-Al 2 O 3 are extensively used, they have their limits.…”

Section: Introductionmentioning

confidence: 99%

Renewable Butene Production through Dehydration Reactions over Nano-HZSM-5/γ-Al2O3 Hybrid Catalysts

et al. 2020

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“…127,131 The possibility of employing various hetero-polyacids and their salts possessing Brønsted acidity in alcohol dehydration has been investigated in a number of studies. 129,131,134,137 Catalysts based on molecular sieves have also been employed in the catalytical dehydration of bio-EtOH. Molecular sieves have a porous structure, unique acid−base properties, and a large specific surface area, making them widely employed as adsorbents and catalysts.…”

Section: Ethylenementioning

confidence: 99%

Polymers without Petrochemicals: Sustainable Routes to Conventional Monomers

et al. 2022

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Access to a wide range of plastic materials has been rationalized by the increased demand from growing populations and the development of high-throughput production systems. Plastic materials at low costs with reliable properties have been utilized in many everyday products. Multibillion-dollar companies are established around these plastic materials, and each polymer takes years to optimize, secure intellectual property, comply with the regulatory bodies such as the Registration, Evaluation, Authorisation and Restriction of Chemicals and the Environmental Protection Agency and develop consumer confidence. Therefore, developing a fully sustainable new plastic material with even a slightly different chemical structure is a costly and long process. Hence, the production of the common plastic materials with exactly the same chemical structures that does not require any new registration processes better reflects the reality of how to address the critical future of sustainable plastics. In this review, we have highlighted the very recent examples on the synthesis of common monomers using chemicals from sustainable feedstocks that can be used as a like-for-like substitute to prepare conventional petrochemical-free thermoplastics.

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“…The ethylene production process consists of pretreatment, enzymatic hydrolysis, fermentation, recovery by distillation, and dehydration (Yakovleva et al 2016). There are challenges to achieve commercial-scale production by 2G bioethanol dehydration, such as the selection of a suitable treatment of the lignocellulosic biomass to obtain a cellulosic fraction, the conversion process of cellulose to ethanol, and the fermentation selectivity.…”

Section: G Bioethanol Productionmentioning

confidence: 99%

Bioconversion of wood waste to bio-ethylene: A review

Mendieta

Cardozo

Felissia

et al. 2021

BioRes

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Bio-based ethylene produced by bioethanol dehydration is an environmentally friendly substitute for oil-based ethylene. It is a low-pollution raw material that can be used to produce high-value bio-based materials. Currently, some industrial plants use first-generation (1G) bioethanol to produce bio-ethylene. However, second-generation (2G) bioethanol is not currently used to produce bio-ethylene because the manufacturing processes are not optimized. The conversion of lignocellulosic biomass to bio-ethylene involves pretreatment, enzymatic hydrolysis of carbohydrates, the fermentation of sugars to ethanol, ethanol recovery by distillation, and ethanol dehydration to ethylene. This work presents a review of second-generation (2G) bio-ethylene production, analyzing the stages of the process, possible derivatives, uses, and applications. This review also contains technical, economic, and environmental considerations in the possible installation of a biorefinery in the northeast region of Argentina (NEA).

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Catalytic dehydration of bioethanol to ethylene

Cited by 44 publications

References 101 publications

Renewable Butene Production through Dehydration Reactions over Nano-HZSM-5/γ-Al2O3 Hybrid Catalysts

Renewable Butene Production through Dehydration Reactions over Nano-HZSM-5/γ-Al2O3 Hybrid Catalysts

Polymers without Petrochemicals: Sustainable Routes to Conventional Monomers

Bioconversion of wood waste to bio-ethylene: A review

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