Heterogeneously Catalyzed One-Pot Synthesis of N-alkyl Anilines from Nitroaromatics by Assembled Pt3Sn/Al2O3 Catalyst

被引：3

作者：

Yang Fang ^{[1
]}

Xu Xiang-Sheng ^{[1
]}

Gu Hui-Zi ^{[1
]}

Chen Ao-Ang ^{[1
]}

Yan Xin-Huan ^{[1
]}

机构：

[1] Zhejiang Univ Technol, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310014, Zhejiang, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2012年 / 28卷 / 09期

基金：

中国国家自然科学基金;

关键词：

N-alkylation; In situ liquid hydrogenation; Nitroaromatic; N-alkyl aniline; Pt-Sn bimetallic catalyst; AMINES; HYDROGEN; EFFICIENT; METHANOL;

D O I：

10.3866/PKU.WHXB201206201

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：

N-alkyl anilines were obtained from nitroaromatics by a one-pot method using assembled Pt3Sn/Al2O3 catalyst for heterogeneous in situ hydrogenation in a continuous-flow fixed-bed reactor. At the optimum reaction conditions (503 K, liquid hourly space velocity (LHSV) of 7.5 h(-1), 5% (volume fraction) water, 1% (mass fraction) Pt3Sn/Al2O3 catalyst), nitrobenzene conversion was 100%, with a total N-ethyl and N,N-diethyl aniline yield of 98.2%. Moreover, the Pt3Sn/Al2O3 catalyst had a great conjoint effect for all in situ hydrogenation reactions for N-alkylation. High yields of N-alkylation products were obtained in aliphatic alcohol/water systems for 14 selected nitroaromatics.

引用

页码：2141 / 2147

页数：7

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