Active state of tungsten oxides on WO3/ZrO2 catalyst for steam reforming of dimethyl ether combined with CuO/CeO2

Gigantically enhanced NO sensing properties of WO3/SnO2 double layer sensors with Pd decoration

“…In Fig. 9(a), peaks appearing at 35.6 ± 0.3 and 37.7 ± 0.3 eV correspond to W 6+ 4f 7/2 and W 6+ 4f 5/2 , respectively; and the peaks at the binding energies of 34.5 ± 0.3 and 36.6 ± 0.3 eV correspond to W 5+ 4f 7/2 and W 5+ 4f 5/2 , respectively, agreeing well with the W 5+ state [38][39][40]. For the O 1s spectrum ( Fig.…”

“…9(b)), the peak at 530.74 eV corresponds to lattice oxygen O 2− bonded to W, the peak at 531.25 eV is due to OH − groups, and the last peak comes from of adsorbed H 2 O. The OH − and H 2 O species are due to water vapor from the ambient atmosphere [39][40][41]. From the relative areas of these sub-peaks, the relative contents (molar fractions) of different species can be calculated and the results are given in Table 3.…”

Catalytic performance enhancement by heat treatment of CuFe2O4 spinel and γ-alumina composite catalysts for steam reforming of dimethyl ether

“…In these reforming processes, various fuels such as methanol, ethanol, natural gas, gasoline, diesel, and dimethyl ether have been used for hydrogen production. Especially, the steam reforming process is the most attractive due to the high purity of hydrogen in its reformate [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Formation of Black Ceramic Layer on Aluminum Alloy by Plasma Electrolytic Oxidation in Electrolyte Containing Na₂WO₄

“…6(d)] indicated the formation of WO 3 . 23,24) It was concluded that the ceramic layer which was formed during PEO coating comprised £-Al 2 O 3 and WO 3 compounds. The formation of £-Al 2 O 3 compound was explained by the outward migration of Al 3+ from the substrate and the adsorbed water dissociation.…”