CAJ | 학술논문

采用等体积浸渍法制备了 CuHY 分子筛吸附剂,运用 XRD表征了吸附剂的晶体结构,Py-FT-IR 技术表征了吸附剂的表面酸性能,利用固定床穿透曲线技术、WK-2 D微库仑仪评价了改性分子筛的吸附脱硫性能。结果表明,当铜负载量为4%时,其吸附脱硫能力较佳,随着分子筛吸附剂的表面 B酸量和表面 L 酸量比值的减小,其吸附脱硫性能越强。而当铜负载量较大时,因其表面出现氧化铜,而使其表面基本不存在 B 酸,吸附脱硫能力大大减弱。
채용등체적침지법제비료 CuHY 분자사흡부제,운용 XRD표정료흡부제적정체결구,Py-FT-IR 기술표정료흡부제적표면산성능,이용고정상천투곡선기술、WK-2 D미고륜의평개료개성분자사적흡부탈류성능。결과표명,당동부재량위4%시,기흡부탈류능력교가,수착분자사흡부제적표면 B산량화표면 L 산량비치적감소,기흡부탈류성능월강。이당동부재량교대시,인기표면출현양화동,이사기표면기본불존재 B 산,흡부탈류능력대대감약。
The CuHY zeolites adsorbents with different Cu loadings were prepared via impregnation method.The crystal structure of the adsorbent was characterized by XRD,and the surface acidity was measured by Py-FT-IR technique.The adsorption desulfurization performance was evaluated using fixed bed method with a WK-2D micro coulometer analyzer.The results show that the adsorbents have the best adsorption desulfurization ability when the copper loading is 4%.The adsorption desulfurization performance becomes better with the decrease of the ratio of B acid amount and L acid amount.However,the adsorption desulfurization ability reduces severely,when copper loading is too large which results the surface copper oxide species,even though there is no B acidic sites existing on the surface of the adsorbent.