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Effect of Surface Concentration of Nickel on the Activity and Selectivity of Ni/ZnO-Al2O3 Sorbents in Reactive–Adsorption Desulfurization of Olefin-Containing Feedstock
Chemistry and Technology of Fuels and Oils ( IF 0.6 ) Pub Date : 2022-05-30 , DOI: 10.1007/s10553-022-01379-3
A. A. Botin , A. V. Mozhaev , R. E. Boldushevskii , Yu. A. Khamzin , P. A. Nikulshin

The advantages of the reactive adsorption process for ultra-deep desulfurization of gasoline from catalytic cracking and other hydrocarbon fractions are demonstrated. In order to investigate the effect of the surface concentration of nickel on the activity and selectivity of the reactive adsorption process a series of Ni/ZnO-Al2O3 adsorption-catalytic systems with various nickel contents were synthesized. It was established that at the chemisorption stage at 400°C, with pressure of 0.5 MPa and feedstock weight hourly space velocity of 5.2 h–1 the conversion of thiophene is increased to 94.8% with increase of the surface concentration of nickel to 8 at/nm2. However, the highest value for the hydrodesulfurization/hydrogenation selectivity factor is obtained for the Ni/ZnO-Al2O3 adsorption-catalytic system with a nickel surface concentration of 6 at/nm2.



中文翻译:

镍表面浓度对含烯烃原料反应吸附脱硫中Ni/ZnO-Al2O3吸附剂活性和选择性的影响

展示了反应吸附工艺对催化裂化和其他烃馏分汽油超深度脱硫的优势。为了研究镍的表面浓度对反应吸附过程的活性和选择性的影响,合成了一系列不同镍含量的Ni/ZnO-Al 2 O 3吸附-催化体系。已经确定,在 400°C 的化学吸附阶段,压力为 0.5 MPa,原料重时空速为 5.2 h –1,随着镍的表面浓度增加到 8 at/1,噻吩的转化率增加到 94.8%。纳米2. 然而,对于镍表面浓度为6 at/nm 2的Ni/ZnO-Al 2 O 3吸附催化体系,加氢脱硫/加氢选择性因子的最高值。

更新日期:2022-05-31
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