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Study on Ni-Re-K/Al2O3 catalysts for synthesis of N,N′-di-sec-butyl p-phenylene diamine from p-nitroaniline and 2-butanone

Paper ID Volume ID Publish Year Pages File Format Full-Text
43445 45970 2007 6 PDF Available
Title
Study on Ni-Re-K/Al2O3 catalysts for synthesis of N,N′-di-sec-butyl p-phenylene diamine from p-nitroaniline and 2-butanone
Abstract

Ni-Re-K/Al2O3 catalysts used in reductive alkylation of p-nitroaniline with 2-butanone were investigated by means of BET, XRD, H2-TPR, NH3-TPD and pyridine-FTIR techniques. The results showed that the reducibility and the number of surface Lewis acidic sites of the catalysts played a significant role in improving their activities and selectivities. 10Ni-1Re-1K/Al2O3 (γ-Al2O3 calcined at 1173 K) exhibited better reducibility and the proper amount of surface Lewis acidic sites, so it performed the highest selectivity towards N,N′-di-sec-butyl p-phenylene diamine among the catalysts.

Graphical abstractReductive alkylation of p-nitroaniline with 2-butanone was tested over Ni-Re-K/Al2O3 catalysts. The calcination temperature of the γ-Al2O3 support had an important influence on the textural and chemical properties of the catalysts. The characterization results showed that the number of surface Lewis acidic sites and the reducibility of Ni-Re-K/Al2O3 catalysts played a significant role in determining activities and selectivities of the catalysts. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Ni-Re-K/Al2O3 catalysts; N,N′-di-sec-butyl p-phenylene diamine; Reductive alkylation; Reducibility; Surface Lewis acidic site
First Page Preview
Study on Ni-Re-K/Al2O3 catalysts for synthesis of N,N′-di-sec-butyl p-phenylene diamine from p-nitroaniline and 2-butanone
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 330, 10 October 2007, Pages 43–48
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis