Depolymerization of Organosolv Lignin to Valuable Chemicals over Homogeneous and Heterogeneous Acid Catalysts

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Wanmolee W., Daorattanachai P., Laosiripojana N.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2016

Volume number: 100

หน้าแรก: 173

หน้าสุดท้าย: 177

จำนวนหน้า: 5

นอก: 1876-6102

eISSN: 1876-6102

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85014425038&doi=10.1016%2fj.egypro.2016.10.161&partnerID=40&md5=b1eda417abfd8930d52d0c48143bdaf5

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

Study on lignin conversion to industrial-needed chemicals has been recently developing by using acid depolymerization process. In this work, depolymerization of organosolv lignin was investigated at 250ฐC for 1 h in methanol with and without presence of homogeneous and heterogeneous acid catalysts. In addition, the effect of reaction temperature (200, 250, 300, and 350ฐC) was studied for maximizing the total yields of phenolic compounds. Significant differences in terms of lignin conversion, liquid fraction (oil products), residual lignin (RL) fraction, and solid residue (char) were also observed. The results show that H-Y zeolite (SiO2/Al2O3 = 10) gave the highest lignin conversion (80.70%) and the yields of total aromatic monomers (1.02%) with the maximum product distribution of vanillin (0.40%). Under the conditions of 300ฐC for 1 h in the presence of H-Y zeolite (SiO2/Al2O3 = 10), maximum lignin conversion of 92.58% with total phenolic compound yield of 6.02% can be achieved. The individual monomeric phenols composed of 4-ethylguaiacol (1.37%), guaiacol (1.23%), 4-ethylphenol (1.23%), syringol (1.09%), phenol (0.68%), and vanillin (0.22%). These results suggest that catalytic depolymerization of organosolv lignin is a promising way for production of valuable chemicals. ฉ 2016 Published by Elsevier Ltd.

คำสำคัญ

acid-catalyzed depolymerization, lignin conversion