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Lignin Valorization...
Lignin Valorization by Cobalt-Catalyzed Fractionation of Lignocellulose to Yield Monophenolic Compounds
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- Rautiainen, Sari (författare)
- Stockholms universitet,Institutionen för organisk kemi,Stockholm Univ, Dept Organ Chem, SE-10691 Stockholm, Sweden
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- Di Francesco, Davide (författare)
- Stockholms universitet,Institutionen för organisk kemi,Stockholm Univ, Dept Organ Chem, SE-10691 Stockholm, Sweden
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- Katea, Sarmad Naim (författare)
- Uppsala universitet,Oorganisk kemi
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- Westin, Gunnar, Professor, 1961- (författare)
- Uppsala universitet,Oorganisk kemi
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- Tungasmita, Duangamol N. (författare)
- Chulalongkorn Univ, Fac Sci, Dept Chem, Ctr Excellence Catalysis Bioenergy & Renewable Ch, Bangkok 10330, Thailand
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- Samec, Joseph S. M. (författare)
- Stockholms universitet,Institutionen för organisk kemi,Stockholm Univ, Dept Organ Chem, SE-10691 Stockholm, Sweden
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(creator_code:org_t)
- 2018-12-27
- 2019
- Engelska.
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Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 12:2, s. 404-408
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Herein, a catalytic reductive fractionation of lignocellulose is presented using a heterogeneous cobalt catalyst and formic acid or formate as a hydrogen donor. The catalytic reductive fractionation of untreated birch wood yields monophenolic compounds in up to 34 wt % yield of total lignin, which corresponds to 76% of the theoretical maximum yield. Model compound studies revealed that the main role of the cobalt catalyst is to stabilize the reactive intermediates formed during the organosolv pulping by transfer hydrogenation and hydrogenolysis reactions. Additionally, the cobalt catalyst is responsible for depolymerization reactions of lignin fragments through transfer hydrogenolysis reactions, which target the beta-O-4' bond. The catalyst could be recycled three times with only negligible decrease in efficiency, showing the robustness of the system.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Nyckelord
- biomass fractionation
- birch wood
- cobalt
- heterogeneous catalysis
- lignin
- Green & Sustainable Science & Technology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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