Highly stable Ni/ZnO‐Al₂O₃ adsorbent promoted by TiO₂ for reactive adsorption desulfurization

Abstract

The reactive adsorption desulfurization is an important and efficient technology for the ultra‐deep desulfurization of gasoline. The performance of an adsorbent is vital for the efficiency of the reactive adsorption desulfurization process. The formation of inert spinels is commonly recognized for the deactivation of adsorbents. In this work, TiO2 was incorporated in the Ni/ZnO‐Al2O3 adsorbent to inhibit the formation of the spinel phase. The TiO2 formed a stable protection layer on the surface of Al2O3, which prevented the interaction between Al2O3 and ZnO, inhibiting the formation of the ZnAl2O4 spinel phase. The introduction of TiO2 significantly improved the stability of the adsorbents during cyclic hydrothermal treatments, while the sulfur capacity slightly dropped. Characterization results revealed that TiO2 was homogeneously dispersed on the surface of Al2O3 support and the incorporation of TiO2 could maintain a certain amount of Lewis acid sites in the adsorbents, which are favorable for the adsorption of organo‐sulfur compounds.

New Adsorption Materials for Deep Desulfurization of Fuel Oil

“…Metal oxides (Fe 3 O 4 , MnO, CuO and ZnO, etc.) are early adsorbent materials used for fuel desulfurization [40,[102][103][104]. They mainly produce metal-sulfur bonds or π complexation interactions between metals and sulfur atoms in sulfur compounds, so that sulfur is attached to the adsorbent to achieve the goal of reducing sulfur content [105][106][107].…”

Fabrication of ZnO dual electron transport layer via atomic layer deposition for highly stable and efficient CsPbBr3 perovskite nanocrystals light-emitting diodes

“…As a wide band gap semiconductor material, ZnO is widely used in solar energy [37], catalysis [38,39], laser [40] and other research fields [41]. All-inorganic perovskite films modified by the ZnO with smooth surface and orientational order have been reported [37,40], which facilitates charge extraction and improve device efficiency.…”