Controlling hydrogenation selectivity with Pd catalysts on carbon nitrides functionalized silica

被引：39

作者：

Yuan, Tao ^{[1
]}

Gong, Haifeng ^{[1
]}

Kailasam, Kamalakannan ^{[2
]}

Zhao, Yanxi ^{[1
]}

Thomas, Arne ^{[2
]}

Zhu, Junjiang ^{[1
]}

机构：

[1] South Cent Univ Nationalities, Key Lab Catalysis & Mat Sci State Ethn Affairs &, Minist Educ, Wuhan 430074, Peoples R China

[2] Tech Univ Berlin, Dept Chem, D-10623 Berlin, Germany

来源：

JOURNAL OF CATALYSIS | 2015年 / 326卷

基金：

美国国家科学基金会;

关键词：

Palladium; Carbon nitrides; SBA-15; 1,5-Cyclooctadiene; Selective hydrogenation; MEMBRANE REACTOR; VISIBLE-LIGHT; 1,5-CYCLOOCTADIENE; NANOPARTICLES; REDUCTION;

D O I：

10.1016/j.jcat.2015.03.007

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：

We report here the synthesis of Pd nanoparticles (NPs) supported on a carbon nitrides-silica composite (S-C_T) and its application as a catalyst in the hydrogenation of 1,5-cyclooctadiene. While the mesoporous silica provides a high surface area, the carbon nitrides (CNx) stabilize the Pd NPs, and the Pd particle size can be controlled by varying the treatment temperature (T) for the composite. The Pd catalysts show good conversion and selectivity for hydrogenation both at elevated pressure (50-80 degrees C, H-2 pressure 2 MPa) and at atmospheric pressure, even at zero degrees, and the selectivity can be well controlled owing to the controlled particle size of the Pd NPs. Furthermore, after reusing the catalyst 6 times, no loss in selectivity is observed while the conversion is slightly decreased to about 15%. Thus, an active Pd catalyst with prolonged lifetime for hydrogenation is observed when carbon nitrides-silica composites are used as support. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：38 / 42

页数：5

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