文献类型：期刊文献

英文题名：Ni/ZnO-based adsorbents supported on Al2O3, SiO 2, TiO2, ZrO2: A comparison for desulfurization of model gasoline by reactive adsorption

作者：Meng, Xuan[1]; Huang, Huan[1]; Weng, Huixin[1]; Shi, Li[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2012

卷号：33

期号：10

起止页码：3213

外文期刊名：Bulletin of the Korean Chemical Society

收录：EI(收录号：20124415619945)

语种：英文

外文关键词：Adsorption - Fourier transform infrared spectroscopy - Metals - Nickel oxide - Titanium dioxide - Desulfurization - Adsorbents - Sulfur - Zirconia - II-VI semiconductors - Alumina - Aluminum oxide - Silica - Surface chemistry - X ray diffraction

摘要：Reactive adsorption desulfurization (RADS) experiments were conducted over a series of commercial metal oxide supports (Al2O3-, SiO2-, TiO2- and ZrO2-) supported Ni/ZnO adsorbents. The adsorbents were characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR), and Fourier transform infrared spectroscopy (FTIR) in order to find out the influence of specific types of surface chemistry and structural characteristics on the sulfur adsorptive capacity. The desulfurization performance of all the studied adsorbents decreased in the following order: Ni/ZnO-TiO2 > Ni/ZnO-ZrO 2 > Ni/ZnO-SiO2 > Ni/ZnO-Al2O 3. Ni/ZnO-TiO2 shows the best performance and the three hour sulfur capacity can achieve 12.34 mg S/g adsorbent with a WHSV of 4 h-1. Various characterization techniques suggest that weak interaction between active component and support component, high dispersion of NiO and ZnO, high reducibility and large total Lewis acidity of the adsorbents are important factors in achieving better RADS performance. ? 2005 KCSNET.