Abstract

Particularly large surface area and well-defined nanoparticles are both critical in the issue of nonporous carbons for challenging energy, catalyst and environmental fields. Therefore, following the ecological regulations regarding the quality of fuels, the environment agency calls for sulfur free fuels. In parallel, the presence of metals species in feedstock is deleterious for the various processes in the refinery plants. In this study, the carbon nanospheres (CNSs) were synthesized by burning condensate gas. The results showed that CNSs have a higher surface area and it was chosen as an adsorbent surface to remove sulfur-compound and metals from transportation fuels. The CNSs were examined by FTIR, XRD, SEM-EDX, HRTEM, TGA, FTIR, XRD and Raman spectroscopy. Actual diesel (541 ppm) and fuel marine (267 ppm) desulfurization and demetallization via adsorption have been investigated. As a result, the total sulfur-content could be decreased after oxidation/adsorption to 66 ppm and 1 ppm at optimal conditions for diesel and marine fuel, respectively. Furthermore, metal ions contents were also treated according to the same procedure and the demetallization performance decreased in the order vanadium, nickel and iron. This simple adsorption method can be applied to any refining process as pre- or post-treatment of commercial transportation fuels.

摘要

特别大的表面积和明确定义的纳米粒子对于挑战能源、催化剂和环境领域的无孔碳问题都是至关重要的。因此，根据有关燃料质量的生态法规，环境机构呼吁使用无硫燃料。同时，原料中金属物质的存在对炼油厂的各种工艺都是有害的。在这项研究中，碳纳米球（CNS）是通过燃烧冷凝气体合成的。结果表明，CNSs具有较高的表面积，可作为吸附剂表面去除运输燃料中的硫化合物和金属。通过FTIR、XRD、SEM-EDX、HRTEM、TGA、FTIR、XRD和拉曼光谱检查CNS。实际柴油 (541 ppm) 和燃料船用 (267 ppm) 通过吸附脱硫和脱金属已进行了研究。因此，在柴油和船用燃料的最佳条件下，氧化/吸附后总硫含量可分别降低至 66 ppm 和 1 ppm。此外，金属离子含量也按照相同的程序处理，脱金属性能按钒、镍和铁的顺序降低。这种简单的吸附方法可应用于任何精炼过程，作为商业运输燃料的预处理或后处理。金属离子含量也按照相同的程序处理，脱金属性能按钒、镍和铁的顺序降低。这种简单的吸附方法可应用于任何精炼过程，作为商业运输燃料的预处理或后处理。金属离子含量也按照相同的程序处理，脱金属性能按钒、镍和铁的顺序降低。这种简单的吸附方法可应用于任何精炼过程，作为商业运输燃料的预处理或后处理。