支持TiO2-Al2O3的Ni-W催化剂可有效地生产绿色柴油:"标准"与"Keggin"比较
Ricardo Rivera-Guasco1, Acela López-Benítez2, Alfredo Guevara-Lara1
1Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo Km. 4.5, Col. Carboneras, Mineral de la Reforma, Estado de Hidalgo C.P. 42181, México.
- (Ni-W) 催化剂的新制备方法提高了绿色柴油生产. 新的NiPW/TiO2-Al2O3催化剂显示出优异的脱氧活性和对C18的选择性,产生更高价值的绿色柴油.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 开发高效的催化剂对于可持续生物燃料生产至关重要.
- - (Ni-W) 催化剂对于水处理油到绿色柴油是有效的.
- 优化催化剂制备方法可以显著提高性能.
研究的目的:
- 开发一种新的制备方法,用于Ni-W催化剂,使用Keggin类型的TiO2-Al2O3.3的多氧化物.
- 为了比较新催化剂 (NiPW/TiO2-Al2O3) 与传统合成的催化剂 (NiW/TiO2-Al2O3) 的性能.
- 为了研究催化剂酸度和用于绿色柴油生产的水处理活动之间的相关性.
主要方法:
- 在TiO2-Al2O3的支持下合成Ni-W催化剂,使用一种新的Keggin型多氧化态方法.
- 催化剂性能的表征,包括硫化后的易斯和布伦斯特德酸度.
- 在大豆油的水处理中测试催化剂,以生产绿色柴油.
主要成果:
- 与传统合成相比,这种新的制备方法导致了不同的Ni-W物种.
- 观察到水处理活动与易斯和布伦斯特德酸位的度之间存在直接的相关性.
- NiPWS/TiO2-Al2O3催化剂显示出最高的易斯酸位度 (227μmol/g).
- 这种催化剂的脱氧活性分别比NiWS/TiO2-Al2O3和NiWS/Al2O3参考剂高10%,高55%.
- NiPWS/TiAl催化剂实现了对C18的最高选择性,最大限度地提高了绿色柴油价值.
结论:
- 开发的Keggin类型的多氧化基方法对制备高性能Ni-W催化剂是有效的.
- 催化剂的酸度,特别是易斯酸度,是大豆油高效水处理的关键因素.
- 优化的NiPWS/TiAl催化剂为高价值绿色柴油生产提供了一个有前途的途径.
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