Production of syngas and hydrogen-rich gas from lignocellulosic biomass via Ru/Al2O3 catalyst-assisted slow pyrolysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00640729" target="_blank" >RIV/67985891:_____/25:00640729 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3390/catal15111033" target="_blank" >https://doi.org/10.3390/catal15111033</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/catal15111033" target="_blank" >10.3390/catal15111033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Production of syngas and hydrogen-rich gas from lignocellulosic biomass via Ru/Al2O3 catalyst-assisted slow pyrolysis

Popis výsledku v původním jazyce

The aim of this work is to present a technologically feasible method for processing biomassninto synthesis gas or hydrogen-rich gas. Three types of biomass with different lignin contentsnwere pyrolyzed in a pyrolysis unit under well-defined conditions (ambient pressure,nheating rate of 10 K min−1, end temperature of 500 ◦C, operating particle size, variablencatalyst mass) in the presence of a ruthenium catalyst (Ru/Al2O3, powder), and the effectnof catalyst amount on the yield and gas composition was observed. Feedstock massnwas always 50 g, and catalyst mass was 2.5, 5, and 10 g (mixing ratios 0.05, 0.1, and 0.2,nresp.). During pyrolysis, the raw gas and vapors was passed through the catalyst bed andnconverted to the resulting gas and bio-oil. The gas obtained was cleaned by sequestrationnwith CO2 using commercial active carbon to obtain syngas with different H2/CO ratios ornhydrogen-rich gas. It was found that, depending on the catalyst amount, slow pyrolysisncatalyzed by ruthenium yielded syngas with a H2/CO ratio of approximately 0.5–5, whichnis further usable. The by-products obtained (bio-oil and biochar) are also described. Bio-oilsnfrom all three biomass types contained mainly carboxylic acids (33–46 wt.%) and phenolsn(18–33 wt.%), hydroquinone (up to 5 wt.%), and a high amount of stearate (up to 26 wt.%).nAll of these compounds have high utility value. The resulting biochar can probably benapplied, after activation using CO2, as a sorbent. In conclusion, under energy-efficient conditions (end temperature max. 500 ◦C), Ru/Al2O3-catalyzed pyrolysis of biomass providesnsyngas or hydrogen-rich gas and usable by-products. It should be emphasized that thenmaximum theoretical H2 production from biomass is 60–70 g H2/kg biomass. This limitnvalue could negatively affect the technological development of the process.n

Název v anglickém jazyce

Production of syngas and hydrogen-rich gas from lignocellulosic biomass via Ru/Al2O3 catalyst-assisted slow pyrolysis

Popis výsledku anglicky

The aim of this work is to present a technologically feasible method for processing biomassninto synthesis gas or hydrogen-rich gas. Three types of biomass with different lignin contentsnwere pyrolyzed in a pyrolysis unit under well-defined conditions (ambient pressure,nheating rate of 10 K min−1, end temperature of 500 ◦C, operating particle size, variablencatalyst mass) in the presence of a ruthenium catalyst (Ru/Al2O3, powder), and the effectnof catalyst amount on the yield and gas composition was observed. Feedstock massnwas always 50 g, and catalyst mass was 2.5, 5, and 10 g (mixing ratios 0.05, 0.1, and 0.2,nresp.). During pyrolysis, the raw gas and vapors was passed through the catalyst bed andnconverted to the resulting gas and bio-oil. The gas obtained was cleaned by sequestrationnwith CO2 using commercial active carbon to obtain syngas with different H2/CO ratios ornhydrogen-rich gas. It was found that, depending on the catalyst amount, slow pyrolysisncatalyzed by ruthenium yielded syngas with a H2/CO ratio of approximately 0.5–5, whichnis further usable. The by-products obtained (bio-oil and biochar) are also described. Bio-oilsnfrom all three biomass types contained mainly carboxylic acids (33–46 wt.%) and phenolsn(18–33 wt.%), hydroquinone (up to 5 wt.%), and a high amount of stearate (up to 26 wt.%).nAll of these compounds have high utility value. The resulting biochar can probably benapplied, after activation using CO2, as a sorbent. In conclusion, under energy-efficient conditions (end temperature max. 500 ◦C), Ru/Al2O3-catalyzed pyrolysis of biomass providesnsyngas or hydrogen-rich gas and usable by-products. It should be emphasized that thenmaximum theoretical H2 production from biomass is 60–70 g H2/kg biomass. This limitnvalue could negatively affect the technological development of the process.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Catalysts

ISSN

2073-4344

e-ISSN

2073-4344

Svazek periodika

15

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

1033

Kód UT WoS článku

001623597800001

EID výsledku v databázi Scopus

2-s2.0-105023113958