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

Catalysts

Kedar Bahadur Thapa¹  Jinhua Liang¹  Wei Wang²  Liyan Zhu²  Jianliang Zhu²  Wenlong Xu³  Xiaorui Yang³ 

[1] 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;College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China;;Key Laboratory of Flexible Electronics (KLOFE) &

关键词: organic-inorganic hybrid;    palladium catalyst;    hydrogenation;    dechlorination;    p-chloroaniline;   

DOI  :  10.3390/catal7100292

来源: DOAJ

【 摘 要 】

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%).

【 授权许可】

Unknown