Stephen Chmely, Ph.D.

Stephen Chmely, Ph.D.

  • Assistant Professor of Agricultural and Biological Engineering
225 Ag Engineering Building
Shortlidge Road

University Park, PA 16802

Areas of Expertise

  • Development of emerging bioproducts
  • Additive manufacturing with lignocellulosic biomass
  • Applications of synthetic chemistry to lignin
  • Catalytic transformations of biomass
  • Spectroscopic characterization of bio-derived molecules


  • A.S. Chemistry, Volunteer State Community College, 2003
  • B.S. Chemistry and Physics, Western Kentucky University, 2006
  • Ph.D. Chemistry, Vanderbilt University, 2010

Professional Preparation

  • Postdoctoral Research Associate, Vanderbilt University Medical Center, 2010-2011
  • Postdoctoral Research Associate, National Renewable Energy Laboratory, 2011-2013
  • Research Assistant Professor, Center for Renewable Carbon, University of Tennessee, 2013-2019


  • BRS 300: Introduction to Biorenewable Products
  • BRS 411: Biobased Fiber Science
  • BRS 417: Processing and Manufacturing Systems for Bioproducts
  • BRS 423: Deterioration and Protection of Bioproducts

For information about courses please visit the LionPATH Course Catalog.


3D printing of lignin
Biopolymers, Ebers, L. S., Arya, Aditi, Bowland, C. C., Glasser, W. G., Chmely, S. C., Naskar, A. K., Laborie, M. P., 2021

A Sequential Autohydrolysis-Ionic Liquid Fractionation Process for High Quality Lignin Production
Energy & Fuels, Wang, Jing, Rajan, Kalavathy, Annamraju, Aparna, Chmely, Stephen C., Pingali, Sai Venkatesh, Carrier, Danielle Julie, Labbé, Nicole, 2021

Recycling hot-water extractions of lignocellulosic biomass in bio-refinery for synthesis of carbon nanoparticles with amplified luminescence and its application in temperature sensing
Industrial Crops and Products, Zhang, Longfei, Lyu, Shaoyi, Zhang, Qijun, Chmely, Stephen C., Wu, Yuntao, Melcher, Chuck, Rajan, Kalavathy, Harper, David P., Wang, Siqun, Chen, Zhilin, 2020

Vapor-Phase Stabilization of Biomass Pyrolysis Vapors Using Mixed-Metal Oxide Catalysts
ACS Sustainable Chemistry and Engineering, Edmunds, Charles W., Mukarakate, Calvin, Xu, Mengze, Regmi, Yagya N., Hamilton, Choo, Schaidle, Joshua A., Labbé, Nicole, Chmely, Stephen, 2019

Dual-emitting film with cellulose nanocrystal-assisted carbon dots grafted SrAl 2 O 4 , Eu 2+ , Dy 3+ phosphors for temperature sensing
Carbohydrate Polymers, Zhang, Longfei, Lyu, Shaoyi, Zhang, Qijun, Wu, Yuntao, Melcher, Chuck, Chmely, Stephen, Chen, Zhilin, Wang, Siqun, 2019

Insight into molecular-level interactions between imidazolium-based ionic liquids and cellulose combining NMR, SAXS and MD simulations
Acta Crystallography, Annamraju, A, Smith, N, Petridis, L, O'Neill, H, Pingali, S, Chmely, Stephen, Labbé, N, 2019

Mechanochemically directed metathesis in group 2 chemistry
Chemical Communications, Speight, Isaiah R., Chmely, Stephen, Hanusa, Timothy P., Rheingold, Arnold L., 2019

Lignin-Containing Photoactive Resins for 3D Printing by Stereolithography
ACS applied materials & interfaces, Sutton, Jordan T., Rajan, Kalavathy, Harper, David P., Chmely, Stephen C., 2018

Sustainable Hydrogels Based on Lignin-Methacrylate Copolymers with Enhanced Water Retention and Tunable Material Properties
Biomacromolecules, Rajan, Kalavathy, Mann, Jeffrey K., English, Eldon, Harper, David P., Carrier, Danielle Julie, Rials, Timothy G., Labbé, Nicole, Chmely, Stephen C., 2018

Hot water extraction as a pretreatment for reducing syngas inorganics impurities – A parametric investigation on switchgrass and loblolly pine bark
Fuel, Liu, Qiaoming, Labbé, Nicole, Adhikari, Sushil, Chmely, Stephen C., Abdoulmoumine, Nourredine, 2018

Catalytic transfer hydrogenolysis of organosolv lignin using B-containing FeNi alloyed catalysts
Catalysis Today, Regmi, Yagya N., Mann, Jeffrey K., McBride, James R., Tao, Jingming, Barnes, Craig E., Labbé, Nicole, Chmely, Stephen, 2018

Chapter 2, Bozell, Joseph J., Chmely, Stephen E., Hartwig, William, Key, Rebecca, Labbé, Nicole, Venugopal, Preenaa, Zuleta, Ernesto, 2018

Relationship between lignocellulosic biomass dissolution and physicochemical properties of ionic liquids composed of 3-methylimidazolium cations and carboxylate anions
Physical Chemistry Chemical Physics, Moyer, Preenaa, Smith, Micholas Dean, Abdoulmoumine, Nourredine, Chmely, Stephen C., Smith, Jeremy C., Petridis, Loukas, Labbé, Nicole, 2018

Structural changes in lignocellulosic biomass during activation with ionic liquids comprising 3-methylimidazolium cations and carboxylate anions
Biotechnology for Biofuels, Moyer, P, Kim, K, Abdoulmoumine, N, Chmely, Stephen, Long, B, Carrier, D, Labbé, N, 2018

Environmentally Friendly Process for Recovery of Wood Preservative from Used Copper Naphthenate-Treated Railroad Ties
ACS Sustainable Chemistry and Engineering, Haber, Holly L., Kim, Pyoungchung, Chmely, Stephen, Lloyd, Jeff, Regmi, Yagya N., Abdoulmoumine, Nourredine, Labbé, Nicole, 2017

Scalable and Tunable Carbide-Phosphide Composite Catalyst System for the Thermochemical Conversion of Biomass
ACS Sustainable Chemistry and Engineering, Regmi, Yagya N., Rogers, B. R., Labbé, Nicole, Chmely, Stephen C., 2017

Lignin-coated cellulose nanocrystal filled methacrylate composites prepared via 3D stereolithography printing: Mechanical reinforcement and thermal stabilization
Carbohydrate Polymers, Feng, Xinhao, Yang, Zhaozhe, Chmely, Stephen, Wang, Qingwen, Wang, Siqun, Xie, Yanjun, 2017

Biomass Treatment Strategies for Thermochemical Conversion
Energy & Fuels, Liu, Qiaoming, Chmely, Stephen C., Abdoulmoumine, Nourredine, 2017

Electrocatalytic Activity and Stability Enhancement through Preferential Deposition of Phosphide on Carbide
ChemCatChem, Regmi, Yagya N., Roy, Asa, Goenaga, Gabriel A., McBride, James R., Rogers, Bridget R., Zawodzinski, Thomas A., Labbé, Nicole, Chmely, Stephen C., 2017

Lattice matched carbide-phosphide composites with superior electrocatalytic activity and stability
Chemistry of Materials, Regmi, Y, Roy, A, King, L, Cullen, D, Meyer, III, H, Goenaga, G, Zawodzinski, Jr, T, Labbé, N, Chmely, Stephen, 2017

Using a chelating agent to generate low ash bioenergy feedstock
Biomass and Bioenergy, Edmunds, Charles Warren, Hamilton, Choo, Kim, Keonhee, Chmely, Stephen C., Labbé, Nicole, 2017

Beneficial effects of Trametes versicolor pretreatment on saccharification and lignin enrichment of organosolv-pretreated pinewood
RSC Advances, Kandhola, G, Rajan, K, Labbé, N, Chmely, Stephen, Heringer, N, Kim, J-W, Hood, E, Carrier, D, 2017

Iron piano-stool complexes containing NHC ligands outfitted with pendent arms
RSC Advances, Das, Parthapratim, Elder, Thomas, Brennessel, William W., Chmely, Stephen C., 2016

Structural distortions in M[E(SiMe3)2]3 complexes (M = Group 15, f-Element; E = N, CH)
Inorganic Chemistry, Boyde, Nicholas C., Chmely, Stephen C., Hanusa, Timothy P., Rheingold, Arnold L., Brennessel, William W., 2014

A Mechanistic investigation of acid-catalyzed cleavage of aryl-ether linkages
ACS Sustainable Chemistry and Engineering, Sturgeon, Matthew R., Kim, Seonah, Lawrence, Kelsey, Paton, Robert S., Chmely, Stephen C., Nimlos, Mark, Foust, Thomas D., Beckham, Gregg T., 2014

Lignin depolymerisation by nickel supported layered-double hydroxide catalysts
Green Chemistry, Sturgeon, Matthew R., O'Brien, Marykate H., Ciesielski, Peter N., Katahira, Rui, Kruger, Jacob S., Chmely, Stephen C., Hamlin, Jessica, Lawrence, Kelsey, Hunsinger, Glendon B., Foust, Thomas D., Baldwin, Robert M., Biddy, Mary J., Beckham, Gregg T., 2014

Mechanistic study of a Ru-xantphos catalyst for tandem alcohol dehydrogenation and reductive aryl-ether cleavage
ACS Catalysis, Chmely, Stephen C., Kim, Seonah, Ciesielski, Peter N., Jiménez-Osés, Gonzalo, Paton, Robert S., Beckham, Gregg T., 2013

A mechanistic investigation of acid-catalyzed cleavage of aryl-ether linkages: implications for lignin depolymerization in acidic environments
ACS Sustainable Chemistry & Engineering, Sturgeon, M, Kim, S, Lawrence, K, Paton, R, Chmely, Stephen, Nimlos, M, Foust, T, Beckham, G, 2013

Computational study of bond dissociation enthalpies for a large range of native and modified Lignins
Journal of Physical Chemistry Letters, Kim, Seonah, Chmely, Stephen, Nimlos, Mark R., Bomble, Yannick J., Foust, Thomas D., Paton, Robert S., Beckham, Gregg T., 2011

Reaction of platinum(II) diamine and triamine complexes with selenomethionine
Inorganica Chimica Acta, Williams, Kevin M., Dudgeon, Rebekkah P., Chmely, Stephen C., Robey, Stephanie R., 2011

d‐ and f‐Block Transition Metal Complexes with Bulky Allyl Ligands
Encyclopedia of Inorganic and Bioinorganic Chemistry, Chmely, Stephen, Hanusa, T, 2011

Preparation, structure, and ether cleavage of a mixed hapticity allyl compound of calcium
Organometallics, Jochmann, P, Spaniol, T, Chmely, Stephen, Hanusa, T, Okuda, J, 2011