基于C1的化乙烯合成途径具有环境和经济效益
Yue Wang1, Shihui Zou1,2, Abhinandan Nabera3
1Institute of Catalysis, Zhejiang University, Hangzhou 310027, China.
Journal of the American Chemical Society
|January 27, 2025
概括
这项研究引入了一种基于C1的新途径,用于从甲基化物中生产乙烯化物 (C2H3Cl). 这种新方法使用了酸催化剂,与传统工艺相比,提供了可持续的替代方案,对环境的影响较小,温度较低.
科学领域:
- 催化剂
- 绿色化学
- 化学工程
背景情况:
- 目前的乙烯化物 (C2H3Cl) 生产依赖于化石燃料,对碳排放有很大贡献.
- 对于像乙烯化物这样的商品化学品而言, 需要可持续的非石油基础路径.
- C1平台分子为化学合成提供了有前途的替代原料.
研究的目的:
- 开发一种基于C1的方法,从甲基中合成乙烯化物 (C2H3Cl).
- 研究一种用于选择性氧化合甲基的新型催化系统.
- 评估拟议的甲醇到化 (MTV) 路线的环境和经济效益.
主要方法:
- 开发一个由 tungstate纳米嵌在基质的固体催化剂.
- 使用现场基于同步子的真空紫外线光电化质谱法来阐明反应机制.
- 在650-750°C进行甲基氧化试验.
主要成果:
- 达到10-65%的甲基化物转化,具有较高的乙烯基化物选择性 (60-75%).
- 催化过程在明显低于传统方法的温度 (650-750°C) (>850°C) 上运行.
- 在50小时的测试中证明了稳定的催化剂性能.
- 建立了甲醇到化 (MTV) 的途径,有可能大幅减少气候影响 (24%) 和成本 (38%).
- 未来使用可再生原料的绿色方案可以减少237%的气候变化影响.
结论:
- 一种基于C1的新且高效的乙烯基化物合成途径已成功证明.
- 开发的tungstate-zirconia催化剂可以选择性氧化基.
- 对于目前的石化产品而言,MTV工艺是一个可持续且经济可行的替代方案,具有显著的环境效益.
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