Deactivation in Continuous Deoxygenation of C18-Fatty Feedstock over Pd/Sibunit Full article
Conference |
15th Nordic Symposium on Catalysis 16-18 Jun 2012 , Mariehamn, Åland |
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Journal |
Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028 |
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Output data | Year: 2013, Volume: 56, Number: 9-10, Pages: 714-724 Pages count : 11 DOI: 10.1007/s11244-013-0030-5 | ||||||
Tags | Decarboxylation, Deoxygenation, Fats, Fatty acids, Pd catalyst, Renewable diesel | ||||||
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Abstract:
Catalytic continuous deoxygenation of stearic acid, ethyl stearate and tristearin without any solvents was investigated using Pd/Sibunit as a catalyst in a trickle bed reactor at 300 °C. The main emphasis was to investigate the effect of gas atmosphere and catalyst deactivation. In addition to liquid-phase analysis made offline by GC, also online gas-phase analysis with IR were performed. The main liquid-phase product coming from all reactants was n-heptadecane. In addition to deoxygenation, which was observed for all substrates, also C18 and C16 alkanes were formed from tristearin. The relative ratios between stearic acid, ethyl stearate and tristearin conversions to alkanes after 3 days time-on-stream were 2.8/2.3/1.0, respectively using 5 % H2/Ar as a gas atmosphere, whereas rapid catalyst deactivation occurred with all substrates under H2-lacking atmosphere. The spent catalyst’s specific surface area profile along the downward reactor was maximum in the middle of the catalyst beds with the highest pore shrinking in the beginning and at the end of the reactor catalyst segments in the case of stearic acid and tristearin deoxygenation whereas that decreased consecutively as ethyl stearate passed through the reactor.
Cite:
Madsen A.T.
, Rozmysłowicz B.
, Maki-Arvela P.
, Simakova I.L.
, Eranen E.
, Murzin D.Y.
, Fehrmann R.
Deactivation in Continuous Deoxygenation of C18-Fatty Feedstock over Pd/Sibunit
Topics in Catalysis. 2013. V.56. N9-10. P.714-724. DOI: 10.1007/s11244-013-0030-5 WOS Scopus РИНЦ
Deactivation in Continuous Deoxygenation of C18-Fatty Feedstock over Pd/Sibunit
Topics in Catalysis. 2013. V.56. N9-10. P.714-724. DOI: 10.1007/s11244-013-0030-5 WOS Scopus РИНЦ
Dates:
Published online: | Apr 18, 2013 |
Published print: | Jun 1, 2013 |
Identifiers:
Web of science | WOS:000320500200025 |
Scopus | 2-s2.0-84879869587 |
Elibrary | 20439680 |
Chemical Abstracts | 2013:610352 |
Chemical Abstracts (print) | 159:12271 |
OpenAlex | W1966287867 |