双功能的MoS2/Al2O3 - - 在甲基棕酸盐的水处理中使用的酸催化剂
Evgeniya Vlasova1, Yiheng Zhao2, Irina Danilova1
1Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia.
双功能催化剂通过水解氧化有效地将甲基棕酸盐转化为酸盐. MoS2/Al2O3-ZSM-22催化剂产生了最多的异,与布伦斯特德酸位相对应.
科学领域:
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
背景情况:
- 脂肪酸甲基的水力转化对于生物燃料生产至关重要.
- 对于高效的转化,需要结合水处理和酸性功能的双功能催化剂.
- 焦石和酸提供可调节的酸性,用于水分异构化.
研究的目的:
- 为了合成和描述用于甲基棕酸盐水转化的双功能MoS2/Al2O3-化物催化剂.
- 在转换,选择性和产品分布方面评估催化剂性能.
- 为了研究催化剂酸度和水分异构化活性之间的关系.
主要方法:
- 合成了MoS2/Al2O3-泽奥利特 (ZSM-5,ZSM-12,ZSM-22) 和MoS2/Al2O3-SAPO-11催化剂. 这两种催化剂的合成方法是:
- 使用HRTEM-EDX,SEM-EDX,XRD,N2物理吸收和FTIR光谱的表征.
- 在不同温度 (250-350°C) 和压力 (3.0-5.0 MPa) 下进行床反应堆测试.
主要成果:
- 在310°C以MoS2/Al2O3-地酸盐催化剂实现氧化物的完全转化.
- 对于直接氧化 (HDO) 的选择性在甲基棕酸盐转化时超过85%.
- MoS2/Al2O3-ZSM-22表现出最高的异基产量 (40%),其活性与布伦斯特酸位相对应.
结论:
- 双功能的MoS2/Al2O3-泽奥利特催化剂对于甲基棕酸盐的水转化是有效的.
- 催化剂的酸度,特别是布伦斯特德酸位,显著影响化异构化活动.
- MoS2/Al2O3-ZSM-22在生产高质量的异基生物燃料方面表现有前景.
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