Insights into the Microwave-Assisted Mild Deconstruction of Lignin Feedstocks Using NiO-Containing ZSM-5 Zeolites

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• 作者：Jelena Milovanović ; Nevenka Rajić ; Antonio A. Romero ; Hangkong Li ; Kaimin Shih ; Roman Tschentscher ; Rafael Luque
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：August 1, 2016
• 年：2016
• 卷：4
• 期：8
• 页码：4305-4313
• 全文大小：511K
• 年卷期：0
• ISSN：2168-0485

文摘

The depolymerization of biolignin (BL), eucalyptus (EL), and hardwood lignins (HL) to simple aromatics was studied by a microwave assisted approach using NiO/H-ZSM-5 zeolites as catalysts. The catalysts prepared by the mechanochemical dry milling (MCDM) method contained bunsenite nano NiO particles with an average size of 67 μm at a concentration of 1–4.8 wt % NiO. Yields and composition of the obtained bio-oils are highly dependent on lignin type as well as on the content of NiO. The highest bio-oil yield (about 20 wt %) was obtained using 3.5 wt % NiO and HL as the feedstock. A number of relevant findings based depolymerization experiments are provided which pointed to different monomeric products (mostly S-derived) that could be produced in different proportions depending on the source of investigated lignin and content of the NiO at H-ZSM-5.