Hydrodeoxygenation of Bio-Oil on Bimetallic Catalysts: From Model Compound to Real Feed

• 作者: Andreas Martin Duc Anh Nguyen Luong Huu Nguyen Thuan Minh Huynh Udo Armbruster
• 来源期刊: 可持续生物质能源系统(英文)
• 学科: 化学
• 关键词: BIMETALLIC Catalysts HYDRODEOXYGENATION PHENOL BIO-OIL NI-CO Alloy
• 年，卷（期）: 2015,（4）
• 页码范围: 151-160
• 页数: 10页
• 分类号: O6

摘要

Two series of bimetallic Ni-Co catalysts and corresponding monometallic catalysts with ca. 20 wt% metal loading were evaluated in hydrodeoxygenation (HDO) of phenol as a model compound for bio-oil. The bimetallic catalysts outperformed the corresponding monometallic catalyst in terms of conversion and cyclohexane selectivity. This could be attributed to the formation of Ni-Co alloy, which caused a decrease in metal particle size and stabilized Ni active sites in the near surface region. The balanced combination of formed Ni-Co alloy with acidity from supports allowed performing all individual steps in the reaction network toward desired products at high rate. Consequently, the two best-performing catalysts were tested in HDO of wood based bio-oil, showing that the bimetallic catalyst 10Ni10Co/HZSM-5 was more effective than 20Ni/HZSM-5 in terms of degree of deoxygenation and upgraded bio-oil yield. These findings might open an opportunity for development of a novel cheap but effective catalyst for a key step in the process chain from biomass to renewable liquid fuels.