催化学报

催化学报 ›› 2013, Vol. 34 ›› Issue (1): 140-145.DOI: 10.1016/S1872-2067(11)60513-5

• 研究快讯 • 上一篇    下一篇

Mn掺杂对Ni/ZnO吸附剂脱硫性能的改进

张玉良a,b, 杨永兴a, 林峰a,b, 杨民a, 刘铁峰a, 蒋宗轩a,*, 李灿a   

  1. a中国科学院大连化学物理研究所催化基础国家重点实验室, 辽宁大连116023; b中国科学院大学, 北京100049
  • 收稿日期:2012-12-06 修回日期:2012-01-09 出版日期:2013-01-23 发布日期:2013-01-23

Improvement of adsorptive desulfurization performance of Ni/ZnO adsorbent by doping with Mn additive

ZHANG Yuliang a,b, YANG Yongxing a, LIN Feng a,b, YANG Min a, LIU Tiefeng a, JIANG Zongxuan a,*, LI Can a   

  1. a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China; b Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-12-06 Revised:2012-01-09 Online:2013-01-23 Published:2013-01-23

PDF

816

被引次数

27

摘要： 合成了5%Ni/Mn-ZnO吸附剂体系, 并在固定床上考察了Mn的掺杂对该吸附剂的吸附脱硫性能的影响. 8%MnO掺杂的5%Ni/MnO-ZnO吸附剂抗烧结性能显著提高, 并且吸附剂的脱硫活性和再生活性均有较大提高, 三次再生后的脱硫率仍比一次再生的无Mn掺杂的5%Ni/ZnO吸附剂的脱硫率高出约4%. XRD表征显示掺杂后的吸附剂有ZnMnO3生成.

关键词: 吸附脱硫, 镍, 锰, 氧化锌, 吸附剂, 再生

Abstract: The effect of Mn doping on the adsorptive desulfurization performance of 5%Ni/ZnO adsorbents was investigated in model gasoline, with thiophene as a sulfur-containing compound, using a fixed-bed reactor. The 5%Ni/MnO-ZnO adsorbents with different levels of Mn doping were prepared using an incipient wetness impregnation method and characterized by powder X-ray diffraction (XRD). It was found that the adsorption performances of the 5%Ni/MnO-ZnO adsorbents were considerably improved after Mn doping compared with that of 5%Ni/ZnO. Moreover, the 5%NiO/MnO-ZnO adsorbents showed high desulfurization activities after regeneration. Sulfur removal by a 5%NiO/8%MnO-ZnO adsorbent after three reaction-regeneration cycles was 4% higher than that by a 5%NiO/ZnO adsorbent without Mn doping. The excellent performance of the 5%NiO/8%MnO-ZnO adsorbent in desulfurization, and its regenerability, were attributed to formation of a new compound, ZnMnO3, in the adsorbent; this compound was characterized using XRD.

Key words: Adsorptive desulfurization, Nickel, Manganese, Zinc oxide, Adsorbent, Regeneration