Production of syngas and hydrogen-rich gas from lignocellulosic biomass via Ru/Al2O3 catalyst-assisted slow pyrolysis
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Production of syngas and hydrogen-rich gas from lignocellulosic biomass via Ru/Al2O3 catalyst-assisted slow pyrolysis
Original language description
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
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysts
ISSN
2073-4344
e-ISSN
2073-4344
Volume of the periodical
15
Issue of the periodical within the volume
11
Country of publishing house
CH - SWITZERLAND
Number of pages
15
Pages from-to
1033
UT code for WoS article
001623597800001
EID of the result in the Scopus database
2-s2.0-105023113958