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

被引：15

作者：

Liu, Bowen ^{[1
]}

Bai, Peng ^{[1
]}

Wang, Yang ^{[1
]}

Dong, Zhun ^{[1
]}

Wu, Pingping ^{[1
]}

Mintova, Svetlana ^{[1
,2
]}

Yan, Zifeng ^{[1
]}

机构：

[1] China Univ Petr East China, Key Lab Catalysis Coll Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China

[2] Normandie Univ, Lab Catalysis & Spectrochem Caen France, CNRS, UNICAEN,ENSICAEN, Caen, France

来源：

ECOMAT | 2021年 / 3卷 / 04期

基金：

中国国家自然科学基金; 国家科技攻关计划;

关键词：

Ni; ZnO-Al2O3; adsorbents; reactive adsorption desulfurization; stability; TiO2; ZnAl2O4; spinel; ULTRA-DEEP DESULFURIZATION; TIO2-AL2O3 BINARY OXIDES; SELECTIVE ADSORPTION; DIESEL FUEL; ACID SITES; HYDROGEN-PRODUCTION; SULFIDE CATALYSTS; LEWIS-ACID; HYDRODESULFURIZATION; GASOLINE;

D O I：

10.1002/eom2.12114

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页数：12

共 75 条

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