氨功能化陶瓷膜支撑体担载钯纳米颗粒及其增强的催化性能

doi:10.1016/S1872-2067(14)60190-X

催化学报 ›› 2014, Vol. 35 ›› Issue (12): 1990-1996.DOI: 10.1016/S1872-2067(14)60190-X

氨功能化陶瓷膜支撑体担载钯纳米颗粒及其增强的催化性能

姜红^a, 孙晓旭^a, 杜艳^b, 陈日志^a, 邢卫红^a

a. 南京工业大学材料化学工程国家重点实验室, 江苏南京210009;
b. 南京工业大学环境学院, 江苏南京210009

收稿日期:2014-05-22 修回日期:2014-07-03 出版日期:2014-11-29 发布日期:2014-11-29
通讯作者: 陈日志, 邢卫红
基金资助:
国家自然科学基金(21106061, 21125629); 江苏省自然科学基金(BK20130920).

Catalytic activity of palladium nanoparticles immobilized on an amino-functionalized ceramic membrane support

Hong Jiang^a, Xiaoxu Sun^a, Yan Du^b, Rizhi Chen^a, Weihong Xing^a

a. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China;
b. College of Environment, Nanjing Tech University, Nanjing 210009, Jiangsu, China

Received:2014-05-22 Revised:2014-07-03 Online:2014-11-29 Published:2014-11-29
Supported by:
This work was supported by the National Natural Science Foundation of China (21106061, 21125629) and the Natural Science Foundation of Jiangsu Province (BK20130920).

摘要/Abstract

摘要：

采用双氨基硅烷偶联剂N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷(AAPTS)对陶瓷膜表面接枝功能化并负载钯纳米颗粒, 制得一种有效的可重复使用的催化剂.利用X射线衍射、扫描电镜、电子能谱、感应耦合等离子体、X射线光电子能谱和高分辨透射电镜对催化剂进行了物性表征, 并将其用于催化对硝基苯酚加氢制对氨基苯酚反应.和单氨基硅烷g-氨丙基三乙氧基硅烷(3-APTS)功能化改性相比, 担载在AAPTS功能化陶瓷膜上的钯纳米颗粒具有更高的催化活性和稳定性.相比于3-APTS, AAPTS分子中含有两个氨基, 具有更强的供电子效应, 因此钯纳米颗粒可更多更稳定地负载在AAPTS功能化陶瓷膜上, 从而具有更高的催化活性和稳定性.

关键词: 钯纳米颗粒, N-β-(氨乙基)-γ-氨丙基三甲氧基硅烷, 陶瓷膜, 对硝基苯酚加氢

Abstract:

Pd nanoparticles were immobilized on a tubular ceramic membrane support. The support surface was functionalized by N-(β-aminoethyl)-γ-aminopropyl trimethoxy silane (AAPTS), which contains two amino groups. The Pd-immobilized ceramic membrane support was characterized by X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma emission spectroscopy, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy. Its catalytic properties were investigated by the liquid phase hydrogenation of p-nitrophenol to p-aminophenol. The Pd-immobilized ceramic membrane support was compared with the Pd nanoparticles immobilized on a similar support functionalized by γ-amino-propyltriethoxy silane (3-APTS), which contains one amino group. Higher catalytic activity and stability were observed for the AAPTS-functionalized support. AAPTS contains twice as many amino groups as 3-APTS, and consequently exhibited a stronger electron-donating effect toward Pd. The AAPTS-functionalized ceramic membrane support contained more immobilized Pd nanoparticles, which were bound more strongly. This led to a higher catalytic activity and stability.

Key words: Palladium nanoparticle, N-(β-aminoethyl)-γ-aminopropyl trimethoxy silane, Ceramic membrane, p-Nitrophenol hydrogenation

姜红, 孙晓旭, 杜艳, 陈日志, 邢卫红. 氨功能化陶瓷膜支撑体担载钯纳米颗粒及其增强的催化性能[J]. 催化学报, 2014, 35(12): 1990-1996.

Hong Jiang, Xiaoxu Sun, Yan Du, Rizhi Chen, Weihong Xing. Catalytic activity of palladium nanoparticles immobilized on an amino-functionalized ceramic membrane support[J]. Chinese Journal of Catalysis, 2014, 35(12): 1990-1996.

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氨功能化陶瓷膜支撑体担载钯纳米颗粒及其增强的催化性能

Catalytic activity of palladium nanoparticles immobilized on an amino-functionalized ceramic membrane support

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