Characteristics of the HCHO oxidation reaction over Pt/TiO2 catalysts at room temperature: The effect of relative humidity on catalytic activity

Performance of Ti-pillared montmorillonite supported Fe catalysts for toluene oxidation: The effect of Fe on catalytic activity

“…But Joung et al indicated that the oxidation activity of Pt/CNT was unaffected by the moisture (Joung et al, 2014). Kwon et al (2015) revealed that the presence of moisture even resulted in the excellent activity of Pt/TiO 2 , even if oxygen was not present, ascribed to the oxidization of VOC by surface hydroxyl group from moisture. Hence the effect of moisture on catalyst performance is related to the properties of active species and supports.…”

Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature

“…The O 1s XPS results indicated that the concentrations of OH groups for the Na-, K-, and Cs-Pd/TiO 2 catalysts were enhanced after Na, K, and Cs addition. It has been reported that surface OH, on the one hand, can accelerate partial oxidation of HCHO to formate 24,26,28 and then facilely oxidize formate under ambient temperature; 24,26 on the other hand, the OH species can not only facilitate O 2 adsorption on the defects on TiO 2 (110) but also increase the diffusion of oxygen along the surface Ti (5c) to the alkali metal-Pd-TiO 2 interface. 58,59 The adsorbed oxygen was then activated by the negatively charged metallic Pd species and subsequently oxidized the adsorbed HCHO.…”

“…[4][5][6][7][8][9] Among these methods, catalytic oxidation is known as the most promising method for HCHO removal, which could selectively decompose HCHO to harmless CO 2 and water at a low temperature without any secondary pollution. 10,11 For decades, researchers paid attention to conventional catalysts including metal oxides (Co, Ni, Mn, Ag) 3,[12][13][14][15][16][17][18][19][20] and supported noble metal (Pt, Au, Pd, Rh) catalysts [21][22][23][24][25][26][27][28][29][30][31][32][33] for HCHO oxidation. A relatively high temperature is generally needed to completely oxidize HCHO using the metal oxide catalysts.…”

Effect of Mn substitution on the promoted formaldehyde oxidation over spinel ferrite: Catalyst characterization, performance and reaction mechanism

“…Water adsorbed on the catalyst is known to adsorb both associatively and dissociatively (as OH) on reduced cations and oxidize the surface, which blocks the unsaturated coordination sites on the catalyst surface and suppresses its catalytic activity [66]. In this study, we also compared the catalytic activity of Mn substituted spinel ferrite in the presence or absence of water vapor content (5000 mL m −3 ) in the HCHO/air stream.…”