Effect of catalyst preparation for the simultaneous removal of soot and NOx

Monitoring intermediate species formation by DRIFT during the simultaneous removal of soot and NOx over LaAgMnO3 catalyst

“…In the present work, we address the NO-assisted soot combustion process over LaAgMnO3 catalyst to obtain further information about the main intermediates complexes formed on both catalyst and soot surfaces. This catalyst has demonstrated to be very active for the simultaneous removal of soot and NO and the presence of silver into the structure improved the catalytic performance of the solid [22,23].…”

Effect of Silver Addition to LaFeO3 Perovskite on the Activity of Monolithic La1−xAgxFeO3 Perovskite Catalysts in Methane Hexane Oxidation

“…Both peaks may be attributed to the reduction of dispersed silver oxide-like species and small oxidized silver clusters Ag n +δ . The peak shoulders at 130 °C may be associated with the reduction of Ag 2 O on the surface of the catalyst [40]. The area of peaks in the range of 10-150 °C corresponds to an H 2 consumption of ~ 11 µmol/g (Table 2), which corresponds to 1.0-1.2% of Ag + from the total amount of silver in the catalysts.…”

Research progress of the preparation of perovskite oxide catalysts and their catalytic performances for soot combustion

“…在 该方法中, 燃料/氧化剂比作为一个重要参数被用于衡 量燃烧过程中燃料的富足与贫乏度 [104] , Civera等 [102] 采 用燃烧合成法成功制备了LaMnO 3 , 并根据Jain等 [104] [105,106] , 如Vidal [112,113] . 利用静电纺丝技术制备合成的钙钛矿氧化物 多为纳米管状纤维结构, 如Tie等 [114] 将含有一定量 化时间, 提高合成效率 [122,123] , 如Urán等 [124] [21,125~129] . 基于上述原因, 研 究人员在20世纪90年代就已经进行了利用钙钛矿催化 剂进行柴油机炭烟与氮氧化物同时催化去除的研 究 [130,131] .…”