【摘 要】
：
主要讨论在不同反应温度和不同水蒸汽浓度下,新型的NOx储存-还原催化剂12CaO·7Al2O3/10%K(简称C12A7/K)中水的存远訬O还原性能的影响.研究结果表明,当存在1.2%水蒸汽,并低于
论文部分内容阅读
主要讨论在不同反应温度和不同水蒸汽浓度下,新型的NOx储存-还原催化剂12CaO·7Al2O3/10%K(简称C12A7/K)中水的存远訬O还原性能的影响.研究结果表明,当存在1.2%水蒸汽,并低于500 ℃时,NO转化率和N2的选择性均降低,水蒸汽的存在对催化剂低温区的活性起到较明显的抑制作用;而温度高于500 ℃时,此抑制作用则基本消失,说明此时C12A7/K催化剂的水热稳定性较好.FT-IR结果证明储存NOx后的C12A7/K样品中形成了NO3/NO2的反应中间物种,用H2还原则可消除中间物种,以N2等形式放出.
其他文献
新课程改革的背景下，传统的高中英语教学模式和方法已经无法适应当前的市场和社会，提高高中英语课堂教学的效益成为高中英语教师必须思考的重要问题。从课堂教学结构、教学内容
本文梳理了《晉書音義》所引《說文》的21個條目，將之與二徐本進行比較，指出相異之處並加以考證，或校正《音義》引用之誤，或補《說文》注音釋義之失。
Lung cancer is the leading cause of cancer related death in the world and its mortality could be greatly reduced by diagnosis and treatment in its early stages.
Two-dimensional numerical simulations are performed to study the propulsive performance of fish-like swimming foils using the immersed-boundary method. A single
Remote sensing and geographic information systems (GIS) technologies were used to detect land use/cover changes(LUCC) and to assess their impacts on land surfac
This article deals with statistical analysis of pressure fluctuations at the bottom of spatial hydraulic jumps with abrupt lateral expansions. The effects of th
The triple A or Allgrove’s syndrome is an autosomal recessive disorder characterized by the triad of achalasia cardia, alacrima and ACTH resistant adrenocortic
Sustainable sanitation is an approach for more ecological and sustainable water resources management. In this paper, we proposed one of the new integrated waste
A novel nickel-based superalloy INCONEL 740 was under development for application in ultra-supercritical superheater tubers above 750℃. The precipitation behav
Marine sediments from Lianshan Bay in Huludao, China, were studied in laboratory. A series of simulated experiments were carried out to investigate the influenc