Support modification for improving the performance of MnOx–CeOy/γ-Al2O3 in selective catalytic reduction of NO by NH3

Investigation on electro-catalytic oxidation properties of carbon nanotube–Ce-modified PbO2 electrode and its application for degradation of m-nitrophenol

“…Ce, one of the most reactive rare earth metals, is widely employed in the catalysis fields, including photocatalysis (Padmini and Miranda, 2013), catalytic wet air oxidation (Yang et al, 2008), analytical sensor (Ai et al, 2004), and selective catalytic reduction (Qu et al, 2014). Its characteristic of enhancing the activities of electrodes or catalysts has also attracted much attention of researchers in electro-catalytic oxidation field.…”

Effects of WO3 doping on stability and N2O escape of MnO –CeO2 mixed oxides as a low-temperature SCR catalyst

“…2, three overlapping peaks within 100-500°C temperature range correspond to successive reduction steps (i.e., MnO 2 → Mn 2 O 3 → Mn 3 O 4 → MnO) on the Mn0.4Ce catalyst [7,8,15]. The reduction of Ce 4+ → Ce 3+ , which normally occurs at around 480°C [14,17], can be promoted by adjacent Mn n+ ions and also contributes to these low-temperature peaks [7]. The broad peak centered at 690°C is due to the reduction of lattice oxygen of unpromoted ceria [16,20].…”

“…However, there are some drawbacks such as the toxicity of the vanadium species, deficient low-temperature activity and high activity for SO 2 oxidation, which could lead to deactivation of the catalysts [1,4]. Currently, to reduce the reaction temperature and energy consumption, various manganese-based catalysts, such as MnO x -Al 2 O 3 [6,7], MnO xTiO 2 [8][9][10] and MnO x -CeO 2 [11][12][13][14][15], have been developed for NO x elimination at low temperatures. Among these catalysts, MnO x -CeO 2 catalyst exhibits promising activity at 150-200°C as well as economic efficiency and environmental friendliness [11,12].…”

Incorporation of Al3+ on the rectification properties of ADC thin films

“…Among these methods, Spray pyrolysis method is widely adopted in laboratories because of its low preparation cost and simple handling process. It has fascinated substantial attention of researchers because of its wide band gap and considered as a promising material for chemo-mechanical polishing [18], buffer layers for superconducting coated conductors [19], catalyst [20], oxygen storage [21], gas sensors [22,23], fuel [24] and solar cells [25], electrochemical devices [26,27], optical coatings [28] and optoelectronics devices [29,30].…”