Fourier Transforms Infrared Spectroscopy Applied in Selective Catalytic Reduction of NO by Acetylene

Reduction of Nitric Oxide by Acetylene on Ir Surfaces with Different Morphologies: Comparison with Reduction of NO by CO

“…Selective catalytic reduction (SCR) of NO by hydrocarbons (HCs) has attracted a lot of attention and is believed to be one of the most promising ways to remove NO from automotive exhaust gases. − Various HCs have been used for studying SCR of NO over supported and unsupported catalysts, which include methane, , acetylene, , ethylene, − propene, − propane, ,, and benzene . It has been found that Pt- and Ir-based catalysts are the most active among noble metals for SCR of NO by HCs, and Ir-based catalysts are more active and selective than Pt-based catalysts at higher temperatures .…”

“…It has been found that Pt- and Ir-based catalysts are the most active among noble metals for SCR of NO by HCs, and Ir-based catalysts are more active and selective than Pt-based catalysts at higher temperatures . Among these studies, the SCR of NO by acetylene (C 2 H 2 ) has been investigated the most and has received increasing interest. , On the other hand, catalytic reduction of NO by CO has also been studied extensively due to the fact that CO is also present in the exhaust gases. ,− Pt-, Pd-, and Rh-based catalysts have been extensively studied for reduction of NO by CO due to their application in current commercial three-way catalysts. Recently, supported Ir particles have shown unusually high reactivity for the reduction of NO by CO in the presence of oxygen. − In particular, Wang et al found that Ir/ZSM-5 is much more active than Pt/ZSM-5 for reduction of NO by CO in the presence of excess oxygen, where ZSM refers to Zeolite Socony Mobil.…”

Structure Analysis of FTIR Infrared Spectrometer Based on ANSYS/Workbench

“…In recent years, infrared spectroscopy as a rapid rise spectroscopy analysis technology had been used in waste incineration on-line monitoring abroad, could simultaneously measure various ingredients of flue gases, and effectively control secondary pollution in the incineration process. China could only produce middle-and-low grade FTIR spectrometer for laboratory uses and also didn't apply to industrial field, which could meet the high dust, high temperature/humidity, high corrosion and other harsh conditions demand with good functions such as anti-vibration, anti-interference and real-time performance [1]. Therefore, it was an important link to industrial field by analyzing and optimizing the structure of the FTIR spectrometer to improve anti-vibration performance of the equipment.…”