A magnetically separable catalyst for producing green diesel from renewable feedstock

加拿大在制定运输燃料中混合生物燃料的长期和短期目标方面处于领先地位。生物燃料是可生物降解的，无毒的，可以帮助减少温室气体排放。尽管作为燃料的生物柴油具有许多期望的品质，例如良好的十六烷值和润滑性，但由于储存稳定性差、临界冷流性能、过度溶解性和发动机兼容性问题，可以添加到石油柴油混合物中的生物柴油的量通常限于5%或更少。酯交换是目前从植物油生产生物燃料的主要途径。然而，当低质量的油用作原料时，由于存在不期望的组分，特别是游离脂肪酸（FFA）和水，反式异构化变得非常具有挑战性。

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.