期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 607, 期 -, 页码 1836-1848出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2021.10.013
关键词
Mercaptan oxidation; Base-free oxidation; Nitrogen doped carbon; Co-based catalyst; MOF
The Co/CN-x catalysts derived from MOF exhibit excellent catalytic activity for the base-free oxidation of mercaptans, with complete conversion and > 99.0% selectivity of disulfides. The high performance is attributed to advantages of hierarchical pore structure, self-carrying alkalinity, abundant active sites, and synergistic effects.
The oxidation of mercaptans under mild and base-free conditions is of vital importance in terms of economy and environment for petroleum processing industry. Here, we developed a series of MOF-derived cobalt-based nitrogen-doped (N-doped) carbon (Co/CN-x) catalysts for the base-free catalytic oxidation of mercaptans. The optimal Co/CN-900 showed excellent catalytic activity for the oxidation of mercaptans under base-free conditions, yielding complete conversion of various mercaptans and > 99.0% selectivity of disulfides. The high performance can be contributed to the advantages of hierarchical pore structure for the diffusion and migration of substrates, self-carrying alkalinity for the formation of mercaptide anion, abundant active Co sites for catalytic oxidation of mercaptans as well as the synergistic effects between the Co nanoparticles (NPs) and N-doped carbon supports. Furthermore, a possible mechanism for base-free catalytic oxidation of mercaptans over Co/CN-x catalysts is proposed based on a set of control experiments and density functional theory (DFT) calculations. (c) 2021 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据