A magnetically separable catalyst for producing green diesel from renewable feedstock

加拿大在制定将生物燃料混合到交通燃料中的长期和短期目标方面处于领先地位。生物柴油是可生物降解的，无毒，可以帮助减少温室气体排放。尽管生物柴油作为燃料具有许多理想的性质，如良好的十六烷值和润滑性，但由于储存稳定性差、边缘冷流动特性、溶解能力过大和发动机兼容性问题，可添加到石油柴油混合物中的生物柴油量通常被限制在5%或更少。目前，以植物油为原料生产生物燃料的主要途径是转酯反应。然而，当使用低品质油作为原料时，由于存在不希望的成分，特别是游离脂肪酸(FFAs)和水，反酯反应变得非常困难。

Canada is a leader in setting long-term and short-term targets for blending biofuels in transportation fuels. Biodiesel is biodegradable, non-toxic and can help reduce greenhouse gas emissions. Although biodiesel as a fuel has many desirable qualities, such as a good cetane number and lubricity, the amount of biodiesel that can be added to a petroleum diesel blend is often limited to 5% or less due to poor storage stability, marginal cold flow properties, excessive solvency and engine compatibility issues. Trans-esterification is currently the primary route for producing biofuels from vegetable oils. However, trans-esterificationbecomes very challenging when low quality oils are used as the feedstock due to the presence of undesirable components especially free fatty acids (FFAs) and water.