| 王广建,陈晓婷,田爱秀,王芳.化学通报,2017,80(10):942-947. |
| 活性炭基水解催化剂的制备及其脱硫性能的研究 |
| Study on the preparation of Cu/AC catalysis and its application for desulfurization |
| 投稿时间：2017-01-12 修订日期：2017-06-10 |
| DOI： |
| 中文关键词: 溶胶-凝胶法 浸渍法 催化水解 羰基硫 |
| 英文关键词:sol-gel method impregnation method catalytic hydrolysis carbonyl sulfide |
| 基金项目:国家自然科学基金项目（(21276130) (21506107） |
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| 中文摘要: |
| 通过溶胶-凝胶法、浸渍法制备Cu/AC水解催化剂，考察了不同制备方法对水解脱硫性能的影响。利用XRD、BET、SEM等表征手段对载体及催化剂进行表征，分析了预处理对活性炭表面性质及不同制备方法对脱硫效率的影响，并探讨了水解脱硫的机理。结果表明，浸渍法所制备的水解催化剂活性优于溶胶-凝胶法，在预处理增大了活性炭的比表面积，丰富了活性炭的孔道结构的基础上，浸渍法能均匀的将活性组分分散在载体表面及其孔道，而溶胶-凝胶法中的活性组分主要覆盖在载体的表面，不能有效进入孔道内，造成脱硫效率下降。在反应温度80℃，羰基硫浓度1.33g/m3，空速1500h-1，氧化铜质量分数为5%，焙烧温度350℃的条件下，浸渍法制备的水解催化剂具有较高的硫容，可达29mgS/g。 |
| 英文摘要: |
| Cu/AC hydrolysis catalysts were prepared by sol-gel method and impregnation method, and the influence of the preparation methods on their desulfurization activity 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 activity and the mechanism of hydrolysis desulfurization are discussed. Results show that the desulfurization activity of the catalyst prepared by impregnation method is better than 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 well disperse in the surface. On the contrast, the catalyst prepared by sol-gel method resulted in active component dispersing only in the surface of and cannot effectively get into pores of activated carbon, leading to low desulfurization efficiency. Under temperature 80℃, 1.33g/m3 of COS concentration, 1500h-1 of space velocity, 350℃ of calcination temperature, 5% of mass fraction copper oxide, Cu/AC hydrolysis catalysts prepared by impregnation method have highest sulfur capacity, which has reached to 29mgS/g. |
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