Support-free 3D hierarchical nanoporous Cu@Cu2O for fast tandem ammonia borane dehydrogenation and nitroarenes hydrogenation under mild conditions

被引：28

作者：

Du, Jialei ^{[1
]}

Hou, Jiagang ^{[2
]}

Li, Bing ^{[1
]}

Qin, Rong ^{[1
]}

Xu, Caixia ^{[1
]}

Liu, Hong ^{[1
,3
]}

机构：

[1] Univ Jinan, Collaborat Innovat Ctr Technol & Equipment Biol D, iAIR, Jinan 250022, Shandong, Peoples R China

[2] Qilu Univ Technol, Shandong Acad Sci, Jinan 250353, Shandong, Peoples R China

[3] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 815卷

基金：

中国国家自然科学基金;

关键词：

Nanoporous; Cu@Cu2O; Dealloying; Ammonia borane; Nitroarene reduction; Heterogeneous catalysis; AROMATIC NITRO-COMPOUNDS; PDAG NANOWIRE NETWORKS; FORMIC-ACID; HYDROLYTIC DEHYDROGENATION; EFFICIENT DEHYDROGENATION; PSEUDOMORPHIC CONVERSION; FACILE PREPARATION; REDUCTION; NANOPARTICLES; CATALYSTS;

D O I：

10.1016/j.jallcom.2019.152372

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：

A support-free hierarchical nanoporous (NP) Cu@Cu2O composite is easily fabricated by dealloying Cu5Al95 alloy in dilute NaOH solution. This bulk material has a support-free spongy structure composed of three-dimensional interconnected ligaments and open pore channels with multimodal pore size distributions. The NP-Cu@Cu2O catalyst exhibits high activity, good chemoselectivity, and excellent recyclability toward one-pot transfer hydrogenation reactions of diverse nitroarenes to anilines. NP-Cu@Cu2O can effectively activate ammonia borane under mild conditions and complete the transfer hydrogenation reactions with high yields within a short time period of 5 min Cu2O formed at the nanoporous surface is proposed to be the actual active site causing this advanced performance. The main reaction intermediates were successfully separated and characterized, and a plausible condensation mechanism has been proposed for nitro reduction. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：6

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