加氢精制是石油炼制和石油化工的重要工艺过程之一，多年来一直受到催化学界的重视。随着重油和成品油加工深度及环境保护要求的提高，加氢精制，诸如加氢脱硫(HDS)、加氢脱氮(HDN)和加氢脱芳(HDA)等催化剂的工作效率仍待改进。工业上现行的HDA催化剂多是以γ-Al2O3为载体的负载型贵金属催化剂。作为载体的γ-Al2O3，由于其与被担载的贵金属组分之间的相互作用较强，易形成比较稳定的、难于还原/活化的表面化合物种，不利于催化剂活性的提高。多壁碳纳米管(Multi-walledcarbonnanotubes，简写为CNTs，下同)是一类新奇碳素纳米材料。典型的CNTs具有由sp2-C构成的类石墨平...The saturation of aromatic compounds in distillate fractions and in particular in diesel fuel has received considerable attention in recent years. A high aromatic content is associated with poor fuel quality, giving a low cetane number in diesel fuel and a high smoke point in jet fuel. New legislation has been introduced to limit aromatics in diesel fuel and this has led to new catalyst and proces...学位：理学硕士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：20032511
