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L. Kishore

Bio: L. Kishore is an academic researcher from Indian Institute of Technology Kanpur. The author has contributed to research in topics: Catalysis & Heterogeneous catalysis. The author has an hindex of 2, co-authored 2 publications receiving 25 citations.

Papers
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Journal ArticleDOI
TL;DR: The homonuclear macrocyclic Zr-Zr complex was synthesized by reacting 2,6-diformyl-4-methylphenol with 1,2-phenylenediamine and zirconium oxychloride as mentioned in this paper.
Abstract: The homonuclear macrocyclic Zr–Zr complex was synthesized by reacting 2,6-diformyl-4-methylphenol with 1,2-phenylenediamine and zirconium oxychloride. The heterogeneous complex catalyst was prepared by ionically bonding it on zirconium pillared montmorillonite. The heterogeneous complex catalyst was shown to be stable at the depolymerizing temperature of polypropylene and the reaction product was a waxy solid alone without forming liquid and gaseous material. The FTIR analysis of this solid was shown to have exactly the same IR of the polypropylene indicating that the depolymerization occurs predominately by first formation of polymer radicals by random scission of the polypropylene chain. The chain radical, thus generated, combines with the catalyst to give a radical cation complex and the movement of this along its chain by bond shift reaction produces low molecular waxy product. Experiments have shown that the molecular weight of this waxy product depends upon the reaction temperature as well as the residence time and all its physical properties (melting point and solubility) can be matched with those of the paraffin wax.

16 citations

Journal ArticleDOI
TL;DR: In this paper, a macrocyclic FeCu complex covalently bonded to modified alumina support was prepared for oxidation of cyclohexanol using molecular oxygen and an irreversible first order reaction mechanism was proposed and optimal rate constants were determined.

11 citations


Cited by
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Journal ArticleDOI
10 Jun 2021-Chem
TL;DR: In this article, a review integrates fundamentals and applications of catalytic transformations of seven major plastics and outlines relevant systems for 13 frontrunner routes based on heterogeneous, homogeneous, and biocatalysis.

150 citations

Journal ArticleDOI
TL;DR: In this article, a simple and efficient synthesis of 2,4,5-trisubstituted imidazoles is achieved by three component cyclocondensation of 1,2-dicarbonyl compounds, aldehydes and NH4OAc, as ammonia source using clays, zeolite, nano-crystalline sulfated zirconia (SZ) as catalyst in ethanol at moderate temperature.
Abstract: A simple highly versatile and efficient synthesis of 2,4,5-trisubstituted imidazoles is achieved by three component cyclocondensation of 1,2-dicarbonyl compounds, aldehydes and NH4OAc, as ammonia source using clays, zeolite, nano-crystalline sulfated zirconia (SZ) as catalyst in ethanol at moderate temperature Moreover, the utility of this protocol was further explored conveniently for the one-pot, four component synthesis of 1,2,4,5-tetrasubstituted imidazoles in high yields, short reaction times and milder conditions, easy work-up and purification of products by non-chromatographic methods The catalysts can be recovered for the subsequent reactions and reused without any appreciable loss of their efficiency

120 citations

Journal ArticleDOI
TL;DR: Cobalt oxide catalysts supported on mesoporous silica SBA-15 were compared with analogous catalysts prepared by the more conventional methods of impregnation and adsorption as mentioned in this paper.
Abstract: Cobalt oxide catalysts supported on mesoporous silica SBA-15 were prepared by the “two-solvent” method and compared with analogous catalysts prepared by the more conventional methods of impregnation and adsorption. Cobalt nitrate was used as the precursor. The catalysts were characterized by N 2 adsorption–desorption, XRD, FTIR, XPS, TPR, ICP-MS, TEM and DR UV–vis. Their activity for the oxidation of cyclohexanol was determined by GC and GC–MS. The effect of metal loading on the morphology and catalytic activity of the catalysts was investigated. The catalyst with the lowest cobalt content exhibited the highest catalytic activity for cyclohexanol oxidation due to the better accessibility of the reactants to the catalytic sites.

113 citations

Journal ArticleDOI
TL;DR: In this article, a minireview of selective hydrogenation of phenol and related derivatives to cyclohexanone and analogues is presented, highlighting the research advances in this field.

92 citations

Journal ArticleDOI
TL;DR: In this paper, an easily manufactured catalyst, alkali-metal-promoted Pd/TiO2, achieves 99% phenol conversion and 99% cyclohexanone selectivity at mild conditions of 80 °C and an extremely low H2 pressure of 0.06 MPa in water.

83 citations