Citation: Wang Guangjian, Chen Xiaoting, Tain Aixiu, Wang Fang. Preparation of Cu/AC Catalyst and Its Application for Desulfurization[J]. Chemistry, ;2017, 80(10): 942-947. shu

Preparation of Cu/AC Catalyst and Its Application for Desulfurization

College of Chemical Technology of Qingdao University of Science & Technology, Qingdao 266042

Received Date: 12 January 2017
Accepted Date: 26 June 2017

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Cu/AC hydrolysis catalysts were prepared by sol-gel method and impregnation method, and the influence of the preparation methods on their desulfurization activities were investigated.XRD, BET and SEM were used to characterize the support and the catalysts.The influence of surface pretreatment and preparation methods on their desulfurization activities and the mechanism of hydrolysis desulfurization were discussed.The results showed that the desulfurization activity of the catalyst prepared by impregnation method is better than that prepared by sol-gel method.By expanding the specific surface area and increasing the number of pores of activated carbon in the process of pretreatment, the catalyst which was prepared by impregnated method can be uniformly dispersed on the surface of carrier and also into its pores.On the contrast, the catalyst prepared by sol-gel method resulted in active component dispersing only on the surface of activated carbon, leading to low desulfurization efficiency.Under the temperature of 80℃, 1.33g/m³ of COS concentration, 1500h^-1 of space velocity, 5% of mass fraction copper oxide, Cu/AC hydrolysis catalyst prepared by impregnation method exhibits the highest sulfur capacity of 29mgS/g.
- Sol-gel method,
- Impregnation method,
- Catalytic hydrolysis,
- Carbonyl sulfide
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