在超临界乙醇中,用CoMo/SBA-15催化剂对Kraft素进行催化去聚合,使其成为高产基化醇
Masud Rana1, Shubho Ghosh1, Theoneste Nshizirungu1
1Department of Environment and Energy Engineering, Chonnam National University Gwangju 61186 South Korea parkjeo1@jnu.ac.kr +82-62-530-1859 +82-62-530-1855.
RSC advances
|October 16, 2023
概括
这项研究探讨了使用CoMo/SBA-15催化剂在超临界乙醇中的Kraft素 (KL) 脱聚合. 双金属催化剂有效地产生了类单体,达到27.04%的高产量.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 催化剂是一种催化剂.
- 生物质转换生物质转换
背景情况:
- 宁是一种可持续的芳香化学品来源.
- 强力素 (KL) 的脱聚合是具有挑战性的,因为它的反抗性结构.
- 从素中选择性地产生类单体对于价值化至关重要.
研究的目的:
- 为了研究Mo/SBA-15,Co/SBA-15和CoMo/SBA-15催化剂对KL脱聚变的催化活性.
- 评估金属和酸活性位点对单体生产的影响.
- 为了优化脱聚合,使用超临界乙醇作为捐赠剂.
主要方法:
- 在超临界乙醇中使用各种催化剂 (Mo/SBA-15,Co/SBA-15,CoMo/SBA-15) 催化地去聚合 Kraft 素.
- 对生物油中基单体产量和成分的分析.
- 基于金属和酸位的催化剂活性的表征.
主要成果:
- 双金属CoMo/SBA-15催化剂的活性明显高于单金属催化剂和裸体SBA-15.
- 在CoMo/SBA-15上,在290°C下4小时内,达到27.04%的最大类单体产量.
- 观察到素单元间链接 (β-O-4',β-β,α-O-4') 的裂变,导致基化的增加.
结论:
- CoMo/SBA-15表现出金属和酸部位的协同效应,以实现高效的素脱聚合.
- 超临界乙醇作为一种有效的捐赠溶剂,用于生产单体.
- 这种催化方法为选择性地从素生产有价值的芳香化学物质提供了一个有前途的途径.
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