IN303313: A process for reducing chloronitrobenzene catalyzed by platinum-nanoparticles stabilized on modified montmorillonite clay
Abstract
Pto-nanoparticle of in the size range 0 - 10 nm were prepared in-situ by impregnation of H2PtCl6.6H20 into the nanopores of modified montmorillonite followed by reduction with different reducing agents like ethylene glycol, sodium citrate, hydrogen, hydrazine and sodium borohydrate. The montrnorillonite was modified by activation with mineral acids under controlled condition for generating desired nanopores. XRD pattern of Pto-nanoparticles revealed the formation of face centered cubic (fcc) lattice. These supported Pto-nanoparticles show efficient catalytic activity for the selective reduction of chloronitrobenzenes. As a typical example, at a H2 pressure of 10 bars, temperature 45 o for a period of 15 min, the Pto-nanoparticles (prepared by reduction with hydrazine) exhibit conversion of o-chloronitrobenzene upto 100 % and selectivity > 99 % to o-chloroanilines with very negligible amount of C-C1 bond cleavage.
Filing Date:
23-07-2013
Issue Date:
30-01-2015
Applicant:
CSIR – North East Institute Of Science And Technology (CSIR-NEIST), Jorhat
Patent No:
IN303313
Application No:
2183/DEL/2013
Inventor(s):
Dutta, Dipak Kumar; Dutta, Dipanka
IPC Classification:
C07C
Country:
India
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