Recent advances in molecular imprinting technology for the deep desulfurization of fuel oils
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摘要: 作为一种新型的吸附脱硫技术,分子印迹是制备对模板分子具有专一识别能力的聚合物的技术,具有反应条件温和、工艺简单、投资少、污染小、选择性高、不影响石油辛烷值、可同时得到苯并噻吩类精细化工产品等特点,是一项具有广泛应用前景的经济环保型技术。目前,将识别位点建立在基质表面的表面分子印迹技术可以提高识别位点与印迹分子的结合速率,加强印迹材料吸附分离效率,在油品深度脱硫中具有优越性。近年来,以硅胶、TiO2、K2Ti4O9、炭微球为基质制备出吸附二苯并噻吩和苯并噻吩的表面分子印迹聚合物。综述了分子印迹技术在油品深度脱硫中的最近进展,重点介绍了炭微球表面分子印迹脱硫技术的最新研究。Abstract: As a novel adsorptive desulfurization method for the preparation of adsorbents, molecular imprinting technology is used to create specific molecular recognition sites in polymers to identify sulfur-bearing template molecules. It is a green process with potential applications because of its characteristics of mild conditions, simple operation, low investment, low pollution, high selectivity, no effect on octane value, and the possible reuse of the as-obtained benzothiophene-like compounds as fine chemicals. Recently, inorganic materials including silica gel, TiO2, K2Ti4O9, and carbon microspheres have been used as supports to prepare surface molecularly imprinted polymers for adsorbing dibenzothiophene and benzothiophene. Recent advances in molecular imprinting technology for deep desulfurization are summarized with carbon microsphere surface molecular imprinting technology highlighted. The review provides experimental references and theoretical guidance for designing and preparing green desulfurization materials.
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