The role of sulfur sinks and micro-structured supports on the performance of sulfur-sensitive non-PGM catalysts

Nickel Hydroxide Nanosheets Prepared by a Direct Manual Grinding Strategy for High-Efficiency Catalytic Combustion of Methane

“…Noble metal (Pd, Pt, Ru, Rh, Au, etc. )-supported catalysts are generally used for CH 4 elimination and Pd-supported catalysts have been reported to be highly active ,− ,,− mainly because of their ability to break the C–H bond with high binding energy in CH 4 under a relatively low energy barrier. ,,,,− Although noble metal-supported catalysts have high efficiency, their high price, limited source, sintering issue, and poisoning tendency limit their large-scale application. ,,,, Accordingly, the development of alternative catalysts based on non-noble metals is attractive, and single metal oxide-based catalysts such as MnO x , Co 3 O 4 , CuO, Fe 2 O 3 , NiO, and perovskite have been found to be highly active for methane combustion. ,,,− NiO, a p-type semiconductor, is of particular interest because of its unique chemical properties, high thermal stability, and low prices. − Recently, NiO nanomaterials with different morphologies, such as nanosheets, ,,,− nanoparticles, ,− nanorods, , and honeycomb-like nanostructures, have been reported successively and applied as catalysts, battery electrodes, and capacitors . However, there are not many reports about the application of NiO catalysts in methane catalytic combustion.…”

Scaling up a hollow fibre reactor: A study on non-PGM hollow fibre after-treatments for methane emission control under extreme conditions

“…Previous works using both PGM and non-PGM catalysts agree that sulfur dioxide is responsible for the deactivation of methane emission control catalysts [8][9][10]13,15,23]. In the study presented herein, a concentration of 100 ppmV of sulfur dioxide has been used, a concentration which is 100 times higher than that present in emissions from natural gas power plants.…”

“…Ref -PGM: A [6], B [7], C [8], D [9], E [10], F [11], G [12], H [13] and I [14]. Non-PGM: J [15], K [16], L [17], M [18], N [19], O [20], P [21], Q [22] and R [23]. The bulk metal prices that have been used to calculate the kinetic constant per cost of catalyst are the following: PGM: Pd (94.20 $/g), Pt (39.45 $/g), Rh (19.29 $/g) -Non-PGM: Cr2O3 (4.50 $/Kg), NiO (12.86 $/Kg), MnO2 (10.00 $/Kg), Co3O4 (7.71 $/Kg), SnO2 (32.10 $/Kg) and Fe2O3 (1.40 $/Kg).…”

“…1. As can be seen, two types of catalysts are currently used for the total oxidation of residual methane: platinum group metals (PGM) [6][7][8][9][10][11][12][13][14] and non-platinum group metals (non-PGM) [15][16][17][18][19][20][21][22][23]. The data shown in Fig.…”

Density functional theory based indicators to predict the corrosion inhibition potentials of ceramic oxides in harsh corrosive media

“…55 Such a tendency is also responsible for the deactivation/poisoning of catalysts due to sulfur compounds. 56 This interaction has also been leveraged for removing gases like H 2 S from the atmosphere. 57–59 This is also seen in the pDOS plots.…”