Selective depolymerization of industrial lignin-containing stillage obtained from cellulosic bioethanol processing

Beatriz Gomez-Monedero; M. Pilar Ruiz; Fernando Bimbela; Jimmy Faria

doi:10.1016/j.fuproc.2018.01.021

Selective depolymerization of industrial lignin-containing stillage obtained from cellulosic bioethanol processing

Beatriz Gomez-Monedero, M. Pilar Ruiz, Fernando Bimbela, Jimmy Faria^* (Corresponding Author)

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Reductive depolymerization of lignin-containing stillage (LA lignin) from 2nd generation bioethanol industrial plants have been studied over two different families of catalysts: conventional porous Ru catalysts supported on ZrO2 or activated carbon, and 1-dimensional Ru catalysts supported on multi-walled carbon nanotubes (MWCNT). The lignin depolymerization degree using conventional porous catalysts resulted in values of 42 and 53%, for Ru/ZrO2 and Ru/C, respectively. Strikingly, when using 1D-supported catalysts (Ru/MWCNT and Ru/ZrO2/MWCNT), the extent of lignin depolymerization measured by 1H13C HSQC NMR, reached values of c.a. 80% of β-O-4 bond disappearance and a reduction of the average molecular weight from 3600 Da to ~ 1900 Da. The higher accessibility of the lignin agglomerates to the 1-D catalyst nanoparticles substantially improves the lignin depolymerization degree, which make this approach of great interest in the production of fine chemicals and fuel additives.

Original language	English
Pages (from-to)	165-172
Number of pages	8
Journal	Fuel processing technology
Volume	173
DOIs	https://doi.org/10.1016/j.fuproc.2018.01.021
Publication status	Published - 1 May 2018

Keywords

Lignin
Hydrogenolysis
Stillage
Carbon nanotubes
Depolymerization
1-D catalyst
22/4 OA procedure

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.fuproc.2018.01.021

ArticleFinal published version, 964 KBLicence: Taverne

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@article{9273346ee83e42e6946a431fe11fbab8,

title = "Selective depolymerization of industrial lignin-containing stillage obtained from cellulosic bioethanol processing",

abstract = "Reductive depolymerization of lignin-containing stillage (LA lignin) from 2nd generation bioethanol industrial plants have been studied over two different families of catalysts: conventional porous Ru catalysts supported on ZrO2 or activated carbon, and 1-dimensional Ru catalysts supported on multi-walled carbon nanotubes (MWCNT). The lignin depolymerization degree using conventional porous catalysts resulted in values of 42 and 53%, for Ru/ZrO2 and Ru/C, respectively. Strikingly, when using 1D-supported catalysts (Ru/MWCNT and Ru/ZrO2/MWCNT), the extent of lignin depolymerization measured by 1H13C HSQC NMR, reached values of c.a. 80% of β-O-4 bond disappearance and a reduction of the average molecular weight from 3600 Da to ~ 1900 Da. The higher accessibility of the lignin agglomerates to the 1-D catalyst nanoparticles substantially improves the lignin depolymerization degree, which make this approach of great interest in the production of fine chemicals and fuel additives.",

keywords = "Lignin, Hydrogenolysis, Stillage, Carbon nanotubes, Depolymerization, 1-D catalyst, 22/4 OA procedure",

author = "Beatriz Gomez-Monedero and {Pilar Ruiz}, M. and Fernando Bimbela and Jimmy Faria",

year = "2018",

month = may,

day = "1",

doi = "10.1016/j.fuproc.2018.01.021",

language = "English",

volume = "173",

pages = "165--172",

journal = "Fuel processing technology",

issn = "0378-3820",

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TY - JOUR

T1 - Selective depolymerization of industrial lignin-containing stillage obtained from cellulosic bioethanol processing

AU - Gomez-Monedero, Beatriz

AU - Pilar Ruiz, M.

AU - Bimbela, Fernando

AU - Faria, Jimmy

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Reductive depolymerization of lignin-containing stillage (LA lignin) from 2nd generation bioethanol industrial plants have been studied over two different families of catalysts: conventional porous Ru catalysts supported on ZrO2 or activated carbon, and 1-dimensional Ru catalysts supported on multi-walled carbon nanotubes (MWCNT). The lignin depolymerization degree using conventional porous catalysts resulted in values of 42 and 53%, for Ru/ZrO2 and Ru/C, respectively. Strikingly, when using 1D-supported catalysts (Ru/MWCNT and Ru/ZrO2/MWCNT), the extent of lignin depolymerization measured by 1H13C HSQC NMR, reached values of c.a. 80% of β-O-4 bond disappearance and a reduction of the average molecular weight from 3600 Da to ~ 1900 Da. The higher accessibility of the lignin agglomerates to the 1-D catalyst nanoparticles substantially improves the lignin depolymerization degree, which make this approach of great interest in the production of fine chemicals and fuel additives.

AB - Reductive depolymerization of lignin-containing stillage (LA lignin) from 2nd generation bioethanol industrial plants have been studied over two different families of catalysts: conventional porous Ru catalysts supported on ZrO2 or activated carbon, and 1-dimensional Ru catalysts supported on multi-walled carbon nanotubes (MWCNT). The lignin depolymerization degree using conventional porous catalysts resulted in values of 42 and 53%, for Ru/ZrO2 and Ru/C, respectively. Strikingly, when using 1D-supported catalysts (Ru/MWCNT and Ru/ZrO2/MWCNT), the extent of lignin depolymerization measured by 1H13C HSQC NMR, reached values of c.a. 80% of β-O-4 bond disappearance and a reduction of the average molecular weight from 3600 Da to ~ 1900 Da. The higher accessibility of the lignin agglomerates to the 1-D catalyst nanoparticles substantially improves the lignin depolymerization degree, which make this approach of great interest in the production of fine chemicals and fuel additives.

KW - Lignin

KW - Hydrogenolysis

KW - Stillage

KW - Carbon nanotubes

KW - Depolymerization

KW - 1-D catalyst

KW - 22/4 OA procedure

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U2 - 10.1016/j.fuproc.2018.01.021

DO - 10.1016/j.fuproc.2018.01.021

M3 - Article

SN - 0378-3820

VL - 173

SP - 165

EP - 172

JO - Fuel processing technology

JF - Fuel processing technology

ER -

Selective depolymerization of industrial lignin-containing stillage obtained from cellulosic bioethanol processing

Abstract

Keywords

UN SDGs

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