Adsorbents Of Contained Copper And Its Kerosene Sweetening

With the development of economy recently, the consumption of petroleum is increasing with years. As a result, the air pollution is becoming seriously owing to the noxious gas produced by oil combustion, including SO₂ and SO₃ which injure our health and make acid rain. Therefore, rather strict regulation about the sulfur content in fuel oils has been constituted in each country all over the world. So there is a need for the scientific researchers to find out the desulfurization methods with higher adsorption efficiency, lower cost price and equipment investment, and be easy to be produced in industry.At present, there are two desulfurization processes-the hydrogenation desulfurization and oxidation desulfurization , which have not been met the lower and lower limit of sulfur content in finished gasoline and diesel fuel products by regulatory specifications. The new biodesulfurization is expected to be commercialized in the future, but now there are too many problems to be encountered. Adsorption desulfurization is an attractive technology which has been adverted by many petroleum companies due to its low investment and operation costs. Its key is the adsorbents being of good quality. In this paper, the novel adsorbents are produced and their application on removal of sulfur-containing organic compounds is discussed. The main research respects are summarized as follows:1. Three unique kinds of Cu-containing absorbents based on different carriers including 13X molecular sieve, activated alumina, and activated carbon, are synthesized by immersion method in the CU₂Cl₂-NH₃·H₂O medium and all do exhibit good removal effect on coal oil. It has been demonstrated that 13X molecular sieve and activated carbon display better removal result under proper reaction condition (Cu₂Cl₂/NH₃·H₂O = 0.06 g/mL, Immersion Time = 2 hour, Absorption Time = 2 hour).2. Reaction of NaOH with Cu^Ⅱ and Al^Ⅲ, with glucose and CTAB as assistants, gives rise to coprecipitated Cu^Ⅱ-containing alumina absorbent in ultrasonic method, which is further dealt with hydrazine hydrate to furnish more well-dispersed and tiny Cu^Ⅰ -containing alumina absorbent. This absorbent is characterized by SEM, AAS and XPS, and it is found that this porous absorbent is consisted of ultramicron and, through higher temperature, give rise to...