One-stage bio-oil stabilization over a sulphided NiMo/Al2O3 catalyst

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

One-stage bio-oil stabilization over a sulphided NiMo/Al2O3 catalyst

Popis výsledku v původním jazyce

The upgrading of pyrolysis bio-oils is a crucial step before their further use as advanced biofuels. Hydrotreatment is the preferred upgrading process, but the tendency of bio-oils to form carbonaceous deposits and other negative properties cause catalyst deactivation and thus the gradual decrease in product quality. The catalyst deactivation often leads to the termination of experiments after several hours/days of a continuous hydrotreatment. All those problems were recorded even for two-stage bio-oil hydrotreatment that is usually suggested for bio-oil upgrading. We already reached a total time on stream (TOS) 81 h of bio-oil hydrotreatment when different conditions were tested. Now, we decided to maintain the most appropriate conditions (340 °C and 4 MPa) throughout a whole week over a sulphided NiMo/Al2O3 catalyst. We have succeeded in achieving 80 h TOS under the given conditions without an observable increase in pressure drop during the experiment. A detailed analytical characterization of hydrotreatment products and catalyst after the experiment was carried out, analysing both physicochemical properties and chemical composition. This work provided valuable results that will allow us further optimization of catalyst performance, in particular, to suppress its deactivation and, thus, extending its lifetime.

Název v anglickém jazyce

One-stage bio-oil stabilization over a sulphided NiMo/Al2O3 catalyst

Popis výsledku anglicky

The upgrading of pyrolysis bio-oils is a crucial step before their further use as advanced biofuels. Hydrotreatment is the preferred upgrading process, but the tendency of bio-oils to form carbonaceous deposits and other negative properties cause catalyst deactivation and thus the gradual decrease in product quality. The catalyst deactivation often leads to the termination of experiments after several hours/days of a continuous hydrotreatment. All those problems were recorded even for two-stage bio-oil hydrotreatment that is usually suggested for bio-oil upgrading. We already reached a total time on stream (TOS) 81 h of bio-oil hydrotreatment when different conditions were tested. Now, we decided to maintain the most appropriate conditions (340 °C and 4 MPa) throughout a whole week over a sulphided NiMo/Al2O3 catalyst. We have succeeded in achieving 80 h TOS under the given conditions without an observable increase in pressure drop during the experiment. A detailed analytical characterization of hydrotreatment products and catalyst after the experiment was carried out, analysing both physicochemical properties and chemical composition. This work provided valuable results that will allow us further optimization of catalyst performance, in particular, to suppress its deactivation and, thus, extending its lifetime.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20704 - Energy and fuels

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

27th European Biomass Conference and Exhibition, EUBCE 2019

ISBN

978-88-89407-19-6

ISSN

2282-5819

e-ISSN

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Počet stran výsledku

5

Strana od-do

1507-1511

Název nakladatele

ETA-Florence Renewable Energies

Místo vydání

Florence

Místo konání akce

Lisbon

Datum konání akce

27. 5. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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