High temperature oxidizing-resistant magnetic high entropy catalyst for efficient oxidative desulfurization

被引：11

作者：

Deng, Chang ^{[1
]}

Zhu, Haonan ^{[1
]}

Huang, Yan ^{[1
]}

Liu, Hui ^{[1
]}

Liu, Penghui ^{[1
]}

Cui, Peng ^{[1
]}

Chao, Yanhong ^{[2
]}

Liu, Jixing ^{[1
]}

Wang, Renjie ^{[1
]}

Wu, Peiwen ^{[1
]}

Zhu, Wenshuai ^{[1
,3
]}

机构：

[1] Jiangsu Univ, Sch Chem & Chem Engn, Insitute Energy Res, 301 Xuefu Rd, Zhenjiang 212013, Peoples R China

[2] China Univ Petr, Coll Sci, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

[3] China Univ Petr, Coll Chem Engn & Environm, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

来源：

CATALYSIS TODAY | 2022年 / 405-406卷

基金：

中国国家自然科学基金;

关键词：

Oxidative desulfurization; Magnetic; High -entropy effect; Recycling; OXIDE NANOPARTICLES; BORON-NITRIDE; OXYGEN; PERFORMANCE; COMPOSITES;

D O I：

10.1016/j.cattod.2022.08.002

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Engineering a magnetic response catalyst for ultra-deep oxidative desulfurization of diesel is a valid strategy for recycling. However, for traditional magnetic response catalysts, high temperature is unfavorable, which will induce demagnetization. In this work, a high entropy structure was proposed to construct a magnetic response MoFeNiCuCoOx-1100 (HEO-1100) catalyst by the ion substitution method. Because of the high-entropy effect, the metallic elements in HEO-1100 showed electron-deficiency status, making the magnetism could be retained after 1100 degrees C treatment. Moreover, detailed characterizations showed that the oxidative desulfurization active sites, molybdenum oxide, were uniformly dispersed in the HEO-1100, which was beneficial to the promotion of oxidative desulfurization. Because of the electron-deficient structure along with the high dispersion of active sites, the HEO-1100 catalyst possessed significantly enhanced catalytic performance in oxidative desulfurization with oxygen as an oxidant. Especially, owing to the magnetism, the HEO-1100 catalyst could be readily separated and still exhibited high catalytic activity after 18 times recycling. Furthermore, the desulfurization product, sulfone, could be separated, which was a high-value-added product for medicine.

引用

页码：66 / 74

页数：9