Next Article in Journal
Effect of the Chemical Composition of Mesoporous Cerium-Zirconium Oxides on the Modification with Sulfur and Gold Species and Their Application in Glycerol Oxidation
Previous Article in Journal
Effects of Grafting Azacrown Ether on Thermal and Swelling Properties of Chitosan Films
Article Menu

Export Article

Open AccessCommunication

Oxidative Depolymerization of Lignin Using Supported Niobium Catalysts

Biological and Agricultural Engineering, Campus Box 7625, North Carolina State University, Raleigh, NC 27695-7625, USA
Department of Statistics, Campus Box 8203, North Carolina State University, Raleigh, NC 27695-8203, USA
Author to whom correspondence should be addressed.
ChemEngineering 2017, 1(2), 17;
Received: 18 October 2017 / Revised: 17 November 2017 / Accepted: 20 November 2017 / Published: 29 November 2017
PDF [2675 KB, uploaded 29 November 2017]


Valorization of lignin into aromatics has driven researchers for decades. In this research, niobium was deposited on oyster shells (OSNC) and carbon rods (CRNC) and tested as a catalyst for depolymerization of lignin. Catalysts (2%, 5%, and 8% loading) were synthesized via wet impregnation. Batch experiments were performed at 95 °C, using 8 g of lignin, and 1 g of catalyst. Our research indicates that niobium supported catalysts are effective in partial oxidation of lignin. Maximum vanillin concentration for OSNC was found to be 86.25 mg L−1 (0.1 wt%) at 5% niobium whereas, as for CRNC, maximum vanillin concentration was found to be 139.40 mg L−1 (0.17 wt%) at 2% niobium loading. Addition of hydrogen peroxide into the batch reactor decreased the concentration of vanillin production. View Full-Text
Keywords: lignin; catalytic oxidation; niobium; carbon rod; oyster shell lignin; catalytic oxidation; niobium; carbon rod; oyster shell

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Das, L.; Kolar, P.; Sharma-Shivappa, R.; Classen, J.J.; Osborne, J.A. Oxidative Depolymerization of Lignin Using Supported Niobium Catalysts. ChemEngineering 2017, 1, 17.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics



[Return to top]
ChemEngineering EISSN 2305-7084 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top