Novel CeZrTiAl catalyst for NH3-SCR of NOx based on Ti-bearing BFS

Gong, Pijun; Xie, Jun; Wu, Haitao; Zhang, Yuping; Cheng, Xiangkui

doi:10.1016/j.jece.2021.105233

Cited by 8 publications

(1 citation statement)

References 54 publications

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“…%) is hard to utilize as raw material directly for Ti manufacture. Concentrating Ti by previously developed strategies, such as acid leaching [3], alkali molten salt calcining [4], carbonizationchlorination [5] and high-temperature enrichment [6], suffers from low efficiency and high cost. Currently, the mostly available route for Ti-BFS utilization is used as a whole for building materials considering its high content of CaO and SiO 2 , but excessive TiO 2 (>10%) in Ti-BFS would suppress the polymerization degree of building materials and result in a negative effect on its volume stability [7].…”

Section: Introductionmentioning

confidence: 99%

Efficient Recycling Blast Furnace Slag by Constructing Ti-Embedded Layered Double Hydroxide as Visible-Light-Driven Photocatalyst

et al. 2022

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In this work, a strategy of heat treatment-precipitation has been developed to recycle Ti-containing metallurgical solid waste by forming Ti-embedded MgAl layered double hydroxide (TMA-LDH). This facile and simple route is featured by the dedicated utilization of the composition of slag with high overall recovery efficiency. Importantly, as-obtained product exhibits visible light response distinctly different from that of pristine MA-LDH ascribed to the Fe doping inherited from initial slag. Its mesoporous nanostructure also provides more microchannels for mass and carrier transfer. As such, excellent photocatalytic activity towards degradation of tetracycline hydrochloride is achieved, and 88% removal could be obtained in 60 min. Furthermore, 44% increase in efficiency than that of Ti-excluded LDH also indicates the synergistically promoting effect of Ti incorporation. Mechanism investigation suggests that Ti incorporation regulates the electronic structure of pristine LDH with more active sites, and favors the formation of radicals with improved oxidative ability for photocatalysis.

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