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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。
As a new adsorptive desulfurization technology, molecular imprinting is a technology for preparing polymers with specific recognition ability to template molecules. It has the advantages of mild reaction conditions, simple process, low investment, low pollution and high selectivity without affecting the octane Value, can be simultaneously benzothiophene fine chemical products and other characteristics, is a broad application prospects of economic and environmental protection technology. At present, the surface molecular imprinting technology, which locates the recognition sites on the matrix surface, can increase the binding rate between the recognition sites and the imprinted molecules and enhance the adsorption and separation efficiency of the imprinted material, which is advantageous in deep oil desulfurization. In recent years, silica gel, TiO2, K2Ti4O9, charcoal microspheres as a substrate to prepare adsorption of dibenzothiophene and benzothiophene surface molecularly imprinted polymer. The recent progress of molecular imprinting technology in the deep desulfurization of oil products is reviewed. The latest research on molecularly imprinted desulfurization technology on the surface of carbon microspheres is emphatically introduced.