水热反应时间对氧化锌纳米线结构及脱硫性能的影响

Influence of hydrothermal reaction time on structure and desulfurization performance of ZnO nanowire

先采用水热法制备出氧化锌(ZnO)纳米线,然后以硝酸镍作为活性组分的前驱体盐,ZnO纳米线作为载体,采用等体积浸渍法制备出镍(Ni)/ZnO催化剂,考察了水热反应时间对ZnO纳米线微观形貌及Ni/ZnO催化剂孔结构的影响,并在80 m L固定床反应管中考察了Ni/ZnO催化剂的反应吸附脱硫性能。结果表明:当水热反应时间为36 h时,所制备ZnO纳米线特征衍射峰尖锐,呈现花簇状生长;Ni/ZnO催化剂的比表面积最大,其值为35.25 m2/g;吸附脱硫反应持续60 h后,脱硫率仍高于91%。

ZnO nanowire was prepared by hydro- thermal method, then with nickel nitrate as the pre- cursor salt active component,ZnO nanowire as carri- er, Ni/ZnO catalyst was prepared by equal volume impregnation method,the influences of hydrothermal reaction time on ZnO nanowire morphology and pore structure of catalyst Ni/ZnO were studied, and the reactive adsorption desulfurization performance of Ni/ZnO catalyst was investigated in an 80 mL fixed bed reaction tube. The results showed that when thehydrothermal reaction time was 36 h,the characteris- tics diffraction peak of the prepared ZnO nanowire was sharp, showing the growth as flower like. Ni/ ZnO catalyst has the largest specific surface area, and its value was 35.25 m2/g. The adsorption desul- furization reaction lasted for 60 h, and the desulfu- rization rate was still higher than 91%.