VO_X supported on TiO₂–Ce_0.9Zr_0.1O₂ core–shell structure catalyst for NH₃-SCR of NO

Abstract

VOX/TiO2–Ce0.9Zr0.1O2 catalyst exhibits high activity and selectivity in a wide temperature window.

C,N‐modified TiO2‐supported Mn–Ce–Cox‐based catalyst for low‐temperature NH3‐SCR

“…3(ad) that Ti-C,N has little effect on the crystallite size (about 13 nm), and the displayed fringe spacing is 0.352 nm, which corresponds to the (101) plane of anatase TiO 2 , indicating that C,N modification does not change the crystal phase of TiO 2. 31 It can be seen from Fig. 3(e-h) that the doping of active components has a great influence on the crystallite size; in particular, CoO z doping can improve the crystallite size (about 20 nm), but there are no lattice fringes on the catalyst surface caused by MnO x /CeO y /CoO z .…”

DeNOxperformance enhancement of Cu-based oxidesviaemploying a TiO2phase to modify LDH precursors

“…34 The literature was reported that there was only Lewis acid sites over the anatase (TiO 2 ). 32,33,35 Therefore, the intensity of the band of the Lewis acid sites over CuAl-LDO/TiO 2 NTs catalyst was stronger than CuAl-LDO catalyst. In addition, compared with CuAl-LDO, CuAl-LDO/TiO 2 NTs catalyst have the most abundant and strongest acid sites over the surface, which was in good agreement with their NH 3 -TPD results.…”

“…The bands located at $1440 cm À1 , $1540 cm À1 , 1590 cm À1 and 1655 cm À1 were corresponded to the Lewis acid sites ($1440 cm À1 and 1590 cm À1 ) and Brønsted acid sites ($1540 cm À1 and 1655 cm À1 ), respectively. 32,33 The bands around 1485 cm À1 were assigned to both Brønsted and Lewis acid sites over catalysts. 34 The literature was reported that there was only Lewis acid sites over the anatase (TiO 2 ).…”