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142篇 您的检索式:作者名="Kantam"
    题名 作者 年代 出处 被引量
1Solid-liquid extraction of Gd(Ⅲ) and separphosphoric acid solutions using Tulsion C显示文摘Solid-liquid extraction of gadolinium was investigated from phosphoric acid medium using commercial amino phosphonic acid resin, Tulsion CH-93. The experimental conditions studied included equilibration time, acid concentration, mass of the resin, metal concentra-tion, loading and elution. The percent extraction of Gd(Ⅲ) was studied as a function of phosphoric acid (0.05-3 mol/L) using Tulsion CH-93 resin. The corresponding lgD vs. equilibrium pH plot gave straight line with a slope of 1.8. The percent extraction decreased with acid con-centration increasing, conforming ion exchange mechanism. Under observed experimental conditions the loading capacity of Tulsion CH-93 for gadolinium was 10.6 mg/g. Among several eluants screened, the quantitative elution of Gd(Ⅲ) from loaded Tulsion CH-93 was obtained with ammonium oxalate (0.15 mol/L). The extraction behavior of commonly associated metals with gadolinium was studied as a function of phosphoric acid concentration. Tulsion CH-93 resin showed selective extraction towards heavy rare earths (Lu and Yb) which could be sepa-rated from other rare earths at 3 mol/L H3PO4, similar to wet phosphoric acid (3-5 mol/L). On the other hand Gd(Ⅲ) and other rare earths were studied with chelating resin Tulsion CH-90. Light rare earths were highly extracted and these could be separated from heavy rare earths and Gd.)S.Radhika V.Nagaraju B.Nagaphani Kumar M.Lakshmi Kantam B.Ramachandra Reddy 2012Journal of Rare Earths2012,30,12:2
2N-Arylation of Heterocycles with Activated Chloro and Fluoroarenes Using Nanocrystalline Copper(Ⅱ)Oxide显示文摘KANTAM M L YADAV J JHA S 2007Adv Syn Catal2007,349,1112:1
3显示文摘 KANTAM ML CHOVDARY B M 1989Indian J Chem1989,1,:1
4显示文摘Kantam M Lakshmi Ranganath K V S Sateesh M 2006Journal of Molecular Catalysis A: Chemical2006,244,:1
5An efficient copper/aluminum hydrotalcite catalyst for asymmetric hydrosilylation of ketones at room temperature 显示文摘KANTAM M L LAHA S YADAV J 2008Organ- ic Letters2008,10,14:1
6Epoxidations of olefins catalysed by new Mn(Ⅱ) salen immobilized mesoporous materials显示文摘Choudary B M Kantam M L Bharathi B 2000J Mol Catal A:Chem2000,159,2:1
7An improved process for selective liquid-phase air oxidation of toluene 显示文摘KANTAM M L SREEKANTH P RAO K K 2002Catal Lett2002,81,34:1
8Silica gel anchored chiral Mn(Ⅲ)salen complexes for enantioselective epoxidation of unfunctionalized olefins显示文摘Choudary B M Chowdari N S Kantam M L at al 2001Catal Lett2001,76,34:1
9An Efficient Base-free N-arylation of Imidazoles and Amines with Arylboronic Acids Using Copper-exchanged Fluorapatite显示文摘KANTAM M L VENKANNA G T SRIDHAR C 2006J Org Chem2006,71,25:1
10Selective nitration of aromatic compounds by solid acid catalysts 显示文摘Choudary B M Sateesh M Lakshmi Kantam M 2000Chem Commun ( S1359-7345 )2000,,1:1
11Iron pillared clay-an efficient catalyst for ring opening of oxiranes显示文摘Kantam M L Santhi P Z Prased K V 2000Journal of Molecular Catalysis A:Chemical2000,156,:1
12One-pot wittig reaction for the synthesis of α,β- unsaturated esters using highly basic magnesium/lanthanum mixed oxide 显示文摘Lakshmi Kantam M Shiva Kumar K B Balasubramanyam V 2010Journal of Molecular Catalysis A : Chemical2010,321,:1
13Aldol and Knoevenagel condensations catalysed by modified Mg--Al hydrotalcite: a solid base as catalyst useful in synthetic organic chemistry显示文摘Lakshmi Kantam M Choudary B M Koteswara Raoa Ch 1998Chem Commun1998,,:1
14Polyaniline supported palladium catalyzed Suzuki-Miyaura cross-coupling of bromo-and chloroarenes in water显示文摘Kantam M L Roy M Roy S 2007Tetrahedron2007,63,33:1
15Amination of alcohols catalyzed by copper-aluminium hydrotalcite: a green synthesis of amines 显示文摘Likhar P R Arundhathi R Kantam M L 2009European Journal Organic Chemistry2009,31,:1
16Catalytic C -C bond formation promoted by Mg - A1 - O - t - Bu hydrotaleite 显示文摘Choudary B M Kantam M L Kavita B et 81 2000Tetrahedron2000,56,47:1
17The first example of heterogeneous oxidation of secondary amines by tungstate-exchanged Mg-AI layered double hydroxides: a green protocol 显示文摘Choudary B M Bharathi B Venkat Reddy C Lakshmi Kantam M 2002Green Chemistry2002,4,3:1
18An improved process for selective liquid-phase air oxidation of toluene显示文摘Kantam M.L Sreekanth P Rao K.K 0,,:1
19Ullmann coupling of aryl iodides catalyzed by gold nanoparticles stabilized on nanocrystalline magnesium oxide显示文摘Maheswaran K L H Kantam M L 2013Catalysis Science&Technology2013,3,4:1
20Nanocrystalline Magnesium Oxide-Stabilized Palladium (0): An Efficient and Reusable Catalyst for Suzuki and Stille Cross-Coupling of Aryl Halides 显示文摘KANTAM M L ROY S ROY M B 2005Advanced Synthesis & Catalysis2005,347,15:1
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