共搜索到4619条信息，每页显示10条信息，共462页。用时：0小时0分0秒384毫秒
on ceria with different BET surface areas.The catalysts were employed to investigate the active sites for the selective catalytic reduction of NO with NH3(NH3-SCR).The kinetic results show that VOx/CeO2...New insights into the role of vanadia species as active sites for selective catalytic reduction of NO with ammonia over VOx/CeO2 catalystsFarong Ji1,Chenxu Li1,Jianqiang Wang1,Jun Wang1,Meiqing......
on ceria with different BET surface areas.The catalysts were employed to investigate the active sites for the selective catalytic reduction of NO with NH3(NH3-SCR).The kinetic results show that VOx/CeO2...New insights into the role of vanadia species as active sites for selective catalytic reduction of NO with ammonia over VOx/CeO2 catalystsFarong Ji1,Chenxu Li1,Jianqiang Wang1,Jun Wang1,Meiqing......
Catalytic synthesis of perfluorolyethersYANG Wei-jun(阳卫军)1, FANG Chao(方超)1, ZHOU Ji-cang(周济苍)2, GUO Can-cheng(郭灿城)1, WAN Wei(万伟)2(1. College of Chemistry and Chemical Engineering, Hunan University... temperature using the methods of anionic polymerization, and perfluorolyethers were obtained with number-average degree of polymerization more than 15. CsF and RbF were used as catalysts and their catalytic......
); 氯酸钾; 动力学常数; 催化光度法; ruthenium; chlorosulphophenol azo rhodanine (CSPAR); potassium chlorate; kinetic constant; catalytic spectrophotometry; [全文内容正在添加中] ......
as the reaction time proceeds. Fig. 8 UV-Visible spectra of 0.01 g Ag at different time Fig. 9 UV-Visible spectra of 0.05 g Ag at different time 3.7 Kinetic study of catalytic degradation..., this is observed from the corresponding decrease in absorbance. From the kinetic studies, the rate of the catalytic activity was calculated which showed the increase in catalytic activity......
Effects of Support on Catalytic Behavior of Combustion Catalyst La0.8Sr0.2CoO3/γ-Al2O3 沈岳年1,斯琴高娃1,王克冰1,秦飞丽1,贾美林1 (1.College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot..., the entering of cobalt ions into γ-Al2O3 lattice is restrained, then LSC formed on the surface of MgAl2O4, which leads to a good catalytic activity of xylene complete oxidation. But the layer of MgAl2O4......
双波长双指示剂催化动力学光度法测定痕量铁柴红梅1,高楼军1,杨少卫1(1.陕西省延安市 延安大学化学与化工学院)摘 要:研究了在盐酸介质中,痕量铁(Ⅲ)催化H2O2氧化中性红和亚甲基蓝褪色的指示反应.通过测量520 nm和660 nm处催化和非催化体系吸光度的变化,利用铁(Ⅲ)的浓度与两波长处吸光度差值的和呈线性关系,建立了双波长双指示剂催化动力学光度法测定痕量铁的新方法.方法的线性范围为0.004~0.02μg/mL,检出限为8.5×10-5 μg/mL,除等量的铜有干扰外,常见离子和Ce(Ⅳ),La(Ⅲ)允......
], kinetic-catalytic spectrophotometry [8], atomic absorption spectrophotometry (AAS) [9], electro-thermal atomic absorption spectrometry [10], fast sweep voltammetry [11, 12], catalytic polarography [13... YOUSFI F, CERD V. Sensitive kinetic-catalytic spectrophotometric method for cobalt determinationusing a chip coupled to a multisyringe flow injection analysis system [J]. Talanta,2017, 166(5): 405–411......
exceptional loss of its activity. Key words: nanostructure; semiconductor; textile dyeing wastewater; optical property; catalytic degradation 1 Introduction Textile industries are facing an enormous... the synergy mechanism in ZrO2-AC, ZnO-AC and NiO-AC systems. In these studies, zero order kinetic fit was used for the photocatalytic degradation studies. However, in the present endeavor, ZrO2, NiO and ZnO......
catalytic effects of Cu(Ⅱ) and Fe(Ⅱ) on the catalytic oxidation for methyl orange were found. The mechanism of producing hydroxyl radicals by Cu(Ⅱ) or Fe(Ⅱ) and its catalytic oxidation mechanism...(Ⅱ)-H2O2 for methyl orange is high, i.e. methyl orange can be completely degraded within 5 min. Key words: catalytic oxidation; methyl orange; copper; ferrous; hydrogen peroxide; constant of reaction rate......
