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Catalysts 2017, 7(10), 292; doi:10.3390/catal7100292

Morpholine-Modified Pd/γ-Al2O3@ASMA Pellet Catalyst with Excellent Catalytic Selectivity in the Hydrogenation of p-Chloronitrobenzene to p-Chloroaniline

1
College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China
2
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 6 September 2017 / Revised: 20 September 2017 / Accepted: 30 September 2017 / Published: 30 September 2017
(This article belongs to the Special Issue Heterogeneous Catalysis & Hydrogen Storage)
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Abstract

An amino poly (styrene-co-maleic anhydride) polymer (ASMA) encapsulated γ-Al2O3 pellet material has been synthesized successfully. After loading with Pd species and modified with morpholine, the inorganic-organic hybrid material shows an excellent catalytic property in the selective hydrogenation of p-chloronitrobenzene (p-CNB) to p-chloroaniline (p-CAN). In this procedure, morpholine can connect with the polymer layer in a form of amide bond and acts as an unparalleled immobilized dechlorination inhibitor, which can avoid further dechlorination efficiently and keeps stability due to the repulsive effect from the surviving C-O-C bond. The catalyst as prepared was characterized by using XRD, TGA, SEM, TEM, FT-IR, and ICP-OES, and it was further tested in the selective hydrogenation of p-CNB. It shows a supreme catalytic activity (almost 100%) and selectivity (up to 99.51%) after recycling for even 10 times, much superior to the blank alumina supported palladium (47.09%). View Full-Text
Keywords: organic-inorganic hybrid; palladium catalyst; hydrogenation; dechlorination; p-chloroaniline organic-inorganic hybrid; palladium catalyst; hydrogenation; dechlorination; p-chloroaniline
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, W.; Xu, W.; Thapa, K.B.; Yang, X.; Liang, J.; Zhu, L.; Zhu, J. Morpholine-Modified Pd/γ-Al2O3@ASMA Pellet Catalyst with Excellent Catalytic Selectivity in the Hydrogenation of p-Chloronitrobenzene to p-Chloroaniline. Catalysts 2017, 7, 292.

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