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In-Situ Upgrading of Organosolv Lignin- and Cellulose-Derived Pyrolyzates Over Ce-MCM-41 Catalyst

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Lignocellulosic biomass, principally consisting of cellulose, hemicellulose and lignin, is a main renewable source for the production of biofuels and valuable chemicals. For instance, the polyaromatic structure of lignin fraction of biomass makes it a high potential feedstock for the production of valuable aromatic chemicals such as phenolic compounds. In this work, selective conversion of the organosolv lignin-derived pyrolyzates to alkylphenols was carried out using Ce-MCM-41 as In-Situ catalyst. Catalytic fast pyrolysis of the organosolv lignin was carried out on a tandem micro-pyrolyzer coupled with gas chromatography and mass spectrometry (GC-MS) detectors. The refined pyrolytic vapor was mainly consisting of phenolics (phenol, alkylphenols, guaiacol and alkylguaiacols), monoaromatic hydrocarbons (benzene, toluene and xylenes), esters (formic acid ethyl ester, acetic acid methyl ester and hexadecanoic acid methyl ester), aldehydes (formaldehyde and methylbenzaldehyde), acids (hydroxyacetic acid and benzoic acids), furans (2-methylfuran and dihydrofuran) and ethanol. Our data showed that the selectivity of products was influenced by pyrolysis temperature (500, 550 and 600 °C). Maximum selectivity of alkylphenols (10.3%) was obtained at 550 °C. Besides In-Situ pyrolysis of organosolve lignin, the In-Situ upgrading of the cellulose-derived pyrolyzates was carried out using Ce-MCM-41 at 550 °C. In-Situ pyrolysis of cellulose using Ce-MCM-41 could obtain high selectivity of aldehydes (11.4%), furans (9.6%) and ketones (3.2%).
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Keywords: Ce-MCM-41 Catalyst; Cellulose; In-Situ Pyrolysis; Organosolv Lignin

Document Type: Research Article

Affiliations: 1: School of Environmental Engineering, University of Seoul, Seoul 02504, Korea 2: Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, Korea 3: Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea

Publication date: February 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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