Application of Barium compound for environmental catalysts

• Main Authors: Tsai bowei, 蔡柏威
• Other Authors: Twu jen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/85505582735383090967

碩士 === 中國文化大學 === 化學系應用化學碩士班 === 100 === The auto locomotive and factory emissions of pollutants generally such as carbon monoxide， hydrocarbons ，nitrogen oxides and sulfur oxides，in the three-way catalysts (TWCs )、Fluid catalyst cracking (FCC) and NOX selective catalytic reduction (SCR)， unable to meet increasingly stringent emissions standards，Makes the birth ofNOx storage-reduction catalyst ( NSR)。 The last decade the NSR catalyst is divided into the PBA type hydrotalcite-type perovskite-type the earliest NSR catalyst Pt/Ba/Al2O3 system，It consists of active part of Pt, store parts of Ba and the carrier part of Al2O3 composed of three parts, referred to as the PBA-based NSR catalysts，later, the activity of precious metals part extended to the Pd, Rh, and storage of partially extended to a variety of alkali metal and alkaline earth metal。The carrier also has a variety of changes, CeO2, ZrO2, SiO2, and Al2O3。 In this thesis, mainly to discuss the reaction mechanism and chemical structure of barium oxide to the use of Raman spectroscopy, thermal gravimetric analysis and infrared spectrometer to study of BaO, BaO2 adsorption capacity for S8, SOX, NOX。