【摘要】 在清洁燃油生产技术中,吸附脱硫由于运行成本低和操作条件温和,被认为是目前最具前景的非加氢脱硫技术之一。吸附脱硫技术在温和的条件下将燃油中的有机硫选择性吸附脱除,而其核心是高效的固体多孔吸附剂材料。本文综述了目前吸附脱硫的吸附机理和吸附剂研究进展,主要从物理吸附、化学吸附和反应-吸附耦合三种吸附机制出发,重点介绍了不同吸附机制的脱硫吸附剂的研究进展及应用,从脱硫选择性、吸附热力学和动力学、选择性等方面深入分析和比较了不同吸附脱硫体系。最后对基于物理吸附、化学吸附和反应-吸附耦合机制的三种脱硫技术进行了总结,指出了目前在真实油品中吸附脱硫仍面临的竞争吸附等问题以及未来亟待进一步关注的方向。更多还原

【Abstract】 Adsorptive desulfurization(ADS) has been considered as one of the most promising nonhydrodesulfurization technologies due to its low operating cost and mild operating conditions. Adsorption desulfurization selectively adsorbs organosulfur compounds from fuel under mid conditions, and the efficient porous adsorbent is the core. In this review, the research progresses on various types of desulfurization adsorbents and their adsorption mechanisms are summarized. Based on the adsorption mechanisms including physical adsorption, chemical adsorption and reaction-adsorption coupling, the ADS adsorbents are classified and discussed in terms of adsorption selectivity, thermodynamic, and kinetics, etc. The perspectives on the challenges, such as the strong competitive adsorption of fuel components in real diesel, and the future directions to be further explored in adsorptive desulfurization of fuels are given.更多还原