Fabrication of carbon doped Cu-based oxides as superior NH3-SCR catalysts via employing sodium dodecyl sulfonate intercalating CuMgAl-LDH

Simultaneous Removal of Soot and NOx from Diesel Engines over Three-Dimensionally Ordered Macroporous ZSM-5-Supported MMnOδ Catalysts

“…As shown in Figure A, the DRIFTS over 3DOM ZSM-5-supported PrMnO δ has a larger NH 3 desorption peak area compared to the other catalysts, indicating that the PrMnO δ /3DOM ZSM-5 catalyst possesses stronger NH 3 adsorption capacity. This may also explain the high low-temperature activity over the 3DOM ZSM-5-supported PrMnO δ . , …”

“…This may also explain the high low-temperature activity over the 3DOM ZSM-5-supported PrMnO δ . 67,68 The NH 3 desorption behavior of PrMnO δ /3DOM ZSM-5 was further investigated under different temperatures (Figure 12B). The peaks at 1281, 1578, and 3200−3400 cm −1 belong to Lewis acid sites, while the peaks at 1460 and 1667 cm −1 are assigned to Brønsted acid sites.…”

Hollow @CuMgAl double layered hydrotalcites and mixed oxides with tunable textural and structural properties, and thus enhanced NH3-NOx-SCR activity

“…The comparison of NO conversion rates achieved using the @CuMgAl-MO hollow spheres (a maximum NO conversion level of 89% was obtained using the @CuMgAl_0.5-MO catalyst at a temperature of 275–300 °C) with the values reported in literature is dependent on the different reaction conditions. For example, Wu et al 82 reported about 80% conversion of NO and 75% selectivity to N 2 at a temperature of 250 °C using a CuMgAl catalyst with a molar ratio of Cu : Mg : Al = 2 : 1 : 1. Zhang et al 83 studied a similar system with a molar ratio of Cu : Mg : Al = 1 : 1 : 1 and reported a maximum NO conversion level of 58% at a temperature of 240 °C.…”

Exfoliated Layered Metal Oxide-Supported Ruthenium Catalysts for Base-Free Oxidation of 5-Hydroxymethylfurfural into a Renewable Bioplastic Precursor

“…The exfoliation of layered materials, such as LDHs, into single-layer nanosheets has been extensively investigated as a facile technique to enhance their textural properties. There are various reports on development of the exfoliated LDH/LDO for various applications. − The enhanced textural properties of exfoliated LDHs are responsible for a small-size active metal, uniform size distribution, and enhanced active metal–support stability . In addition, exfoliation prevented the reconstruction of LDO into the original stacking layered structure upon exposure to moisture .…”