Fabrication of nano-sized Ca(OH)_2 with excellent adsorption ability for N_2O_4
Fabrication of nano-sized Ca(OH)_2 with excellent adsorption ability for N_2O_4作者机构:Key Lab of Advanced Functional MaterialsMinistry of Education of ChinaCollege of Materials Science and EngineeringBeijing University of Technology Beijing Special Engineering Design and Research Institute Laboratory of Catalysis Chemistry and NanoscienceDepartment of Chemistry and Chemical EngineeringCollege of Environmental and Energy EngineeringBeijing University of Technology
出 版 物:《Particuology》 (颗粒学报(英文版))
年 卷 期:2012年第10卷第6期
页 面:737-743页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
主 题:Nano sized Ca(OH)2 Surfactant Digestion method NOx collecting
摘 要:Uniform nano-sized calcium hydroxide (Ca(OH)2) monocrystal powder was synthesized from calcium oxide in a surfactant solution via a digestion method by decreasing the surface tension of the reaction system to control the growth of crystalline Ca(OH)2. The Ca(OH)2 monocrystal powder samples were characterized by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and Fourier transform-infrared spectroscopy (FT-IR). The NOx adsorption ability of the samples was evaluated, and the influence of various types and concentrations of surfactants on powder agglomeration and then the specific surface area in the precipitation process were studied. The specific surface area of the samples was found as high as 58 m2/g and 92 m2/g and the particle size, 300-400 nm and 200-300 nm in the presence of 10 wt% PEG600 and 0.086 mL/L SDS at a reaction time of 5 h, respectively. The product has an exceptionally strong adsorption ability for NOx, which makes it a highly promising adsorbent for emission control and air purification.