DR. ALOK KUMAR SINGH

@sscollegespn.ac.in

Assistant Professor
Swami Shukdevanand college

DR. ALOK KUMAR SINGH


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EDUCATION

D.Phil.

RESEARCH, TEACHING, or OTHER INTERESTS

Catalysis, Chemistry, Analytical Chemistry, Organic Chemistry
9

Scopus Publications

167

Scholar Citations

8

Scholar h-index

7

Scholar i10-index

Scopus Publications

  • Kinetic Studies on Ruthenium(III) Chloride-Catalyzed Oxidation of Benzyl and Homobenzyl Alcohols Using Cerium(IV) Sulfate under Acidic Medium
    Suresh C. Yadav, Shalini Srivastav, Alok K. Singh, Vijay Pandey, Praveen K. Tandon, Ajeet Chandra
    Chemistryselect, 2024
    This study investigates the kinetics of oxidative conversion of benzyl and homobenzyl alcohols to carbonyls using cerium(IV) sulfate in the presence of ruthenium(III) complex under mild acidic conditions. The results revealed that the low concentration of both alcohols and cerium(IV) ions drives the reaction to a first‐order kinetics, whereas a higher concentration induces zero‐order kinetics. In addition, the kinetics of the reaction were altered by the additives of hydrogen ions, cerium(III) ions, and chloride ions. We hope this study will be helpful in understanding the reaction kinetics of the oxidation of primary alcohols.
  • Valorization of waste pulp of Citrus limetta for decontamination of chromium from polluted water
    Saumya Agrahari, Alok Kumar Singh, Mahesh Kumar Gupta, Mubashra Afroz, Vijay Pandey, Harendra Singh, Praveen Kumar Tandon
    Materials Today Proceedings, 2022
  • Oxidation of cyclic alcohols by hexacyanoferrate(III) in alkaline medium in the presence of rhodium(III) chloride as a homogeneous catalyst
    Praveen K. Tandon
    Open Catalysis Journal, 2013
    Un-catalyzed oxidation of cyclic alcohols viz. cyclopentanol and cyclohexanol by hexacyanoferrate(III) in aqueous alkaline medium does not proceed to measurable extent even after 98 hr. Addition of traces of RhCl 3 , used as a homogeneous catalyst accelerates the reaction resulting in the formation of corresponding dicarboxylic acids. Correlating this result with previously reported results in the un-catalyzed oxidation of cyclopentanone to dicarboxylic acid indicates that hexacyanoferrate(III) in alkaline medium is incapable to oxidize cyclopentanol. Addition of catalyst initiates the initial conversion of cyclic alcohol into cyclic ketone which in turn is oxidized to dicarboxylic acid. Rate follows direct proportionality at low concentrations of catalyst, reaching to a maximum with increasing catalyst concentrations but further increase in RhCl 3 concentration retards the reaction velocity. As the amount of catalyst is increased in the reaction mixture it also increases the amount of hydrochloric acid in which RhCl 3 was prepared, resulting in the decrease in pH of the medium. At a particular pH, reactive species of catalyst Rh(OH) 3 (H 2 O) 3 , converts into the un-reactive RhCl 3 (H 2 O) 3 and thus the reaction velocity decreases. Rate of the reaction shows first order kinetics in [OH -] and [cyclic alcohol], but it is one changing to zero order in oxidant concentrations. Increase in chloride ions and hexacyanoferrate(II) concentrations respectively increases and decreases the reaction velocity. Entropy, free energy and enthalpy values were calculated.
  • Oxidation of cyclic alcohols by cerium(IV) in acidic medium in the presence of iridium(III) chloride
    Praveen K. Tandon, Alok K. Singh, Sumita Sahgal, Santosh Kumar
    Journal of Molecular Catalysis A Chemical, 2008
  • Oxidation of some hydroxy acids by alkaline hexacyanoferrate(III) catalysed by ruthenium(VIII)
    Oxidation Communications, 2005
  • Simple one-pot conversion of organic compounds by hydrogen peroxide activated by ruthenium(III) chloride: Organic conversions by hydrogen peroxide in the presence of ruthenium(III)
    Praveen K. Tandon, Ramesh Baboo, Alok K. Singh, Gayatri, Manisha Purwar
    Applied Organometallic Chemistry, 2005
    The aromatic compounds p-nitrobenzaldehyde, p-hydroxybenzaldehyde, naphthalene, toluene, catechol, quinol, aniline and toluidine dissolved in aqueous acetic acid or aqueous medium were oxidized in quantitative to good yields by 50% H2O2 in the presence of traces of RuCl3 (∼10−8 mol; substrate/catalyst ratio 1488:1 to 341 250:1). Conditions for highest yields, in the most economical way, were obtained. Higher catalyst concentrations decrease the yield. Oxidation in aromatic aldehydes is selective at the aldehydic group only. In the case of hydrocarbons, oxidation results in the introduction of a hydroxyl group with >85% (in the case of toluene) selectivity for the ortho position. Formation of low-molecular-weight polyaniline was reduced to 10%, along with 90% formation of higher molecular weight polyaniline. In this new, simple and economical method, which is environmentally safe and requires less time, oxo-centered carboxylate species of ruthenium(III) in acetic acid medium and hydrated ruthenium(III) chloride in aqueous medium probably catalyze the oxidation. Copyright © 2005 John Wiley & Sons, Ltd.
  • Oxidation of ketones by ceric perchlorate catalysed by iridium(III)
    Praveen K. Tandon, Sumita Sahgal, Alok K. Singh, Gayatri, Manisha Purwar
    Journal of Molecular Catalysis A Chemical, 2005
  • Cocatalysis by ruthenium(III) in hydrogen ions catalyzed oxidation of iodide ions: A kinetic study
    Praveen K. Tandon, Alka Mehrotra, Alok K. Singh, Ramesh Baboo, Priy B. Dwivedi
    International Journal of Chemical Kinetics, 2004
    RuCl3 further catalyzes the oxidation of iodide ion by K3Fe(CN)6, already catalyzed by hydrogen ions. The rate of reaction, when catalyzed only by hydrogen ions, was separated graphically from the rate when both Ru(III) and H+ ions catalyzed the reaction. Reactions studied separately in the presence as well as absence of RuCl3 under similar conditions were found to follow second‐order kinetics with respect to [I−], while the rate showed direct proportionality with respect to [Fe(CN)6]3−, [RuCl3], and [H+]. External addition of [Fe(CN)6]4− ions retards the reaction velocity, while changing the ionic strength of the medium has no effect on the rate. With the help of the intercept of the catalyst graph, the extent of the reaction that takes place without adding Ru(III) was calculated and it was in accordance with the values obtained from the reaction in which only H+ ions catalyzed the reaction. It is proposed that ruthenium forms a complex, which slowly disproportionates into the rate‐determining step. Arrhenius parameters at four different temperatures were also calculated. © 2004 Wiley Periodicals, Inc. Int J Chem Kinet 36: 545–553, 2004
  • Iridium (III) catalysed oxidation of alcohols in aqueous acidic medium
    Oxidation Communications, 2003

RECENT SCHOLAR PUBLICATIONS

  • Smarter Chips, Safer Lives: Lab-on-a-chip Biosensors for Pharmacological Applications and Healthcare Transformation. Medical Research Archives,[online] 13 (3)
    I Tiwari, AK Singh
    2025
  • A study on cost of cultivation and various income measures of pea in Jhansi district of Bundelkhand region of Uttar Pradesh
    N Khan, A Singh, A Tiwari
    International Journal of Agriculture Extension and Social Development 7, 867-869 , 2024
    2024
    Citations: 1
  • Valorization of waste pulp of citrus limetta for decontamination of chromium from polluted water
    Materials Today , 2023
    2023
  • ESTIMATION OF ANNUAL EFFECTIVE DOSE DUE 222 RN AND ITS PROGENY CONCENTRATION IN DWELLINGS OF BAREILLY CITY.
    EC Bulletin
    2023
  • COUNTERING TUMOR CELLS USING SILVER NANOPARTICLES: A REVIEW
    INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH 12 (3), 35 , 2023
    2023
  • Effect of Various Mycorrhizae-based Products on Growth and Phytotoxicity Characteristics of Potato (Solanum tuberosum L.) cv. Kufri Sindhuri
    BK Singh, AK Tiwari, PK Singh, AK Singh
    European Journal of Nutrition and Food Safety 12 (4), 86-90 , 2020
    2020
  • Bioefficacy Study of Bacillus subtilis Based Biofungicide on Leaf Spot Disease, Growth and Yield Attributes of Tomato [Solanum lycopersicum L.] CV. Arka Vikas
    AK Tiwari, BK Singh, AK Singh, PK Singh
    Current Journal of Applied Science and Technology 39 (7), 35-41 , 2020
    2020
    Citations: 1
  • Effect of age of seedlings and planting geometry on yield attributes and yield of rice (Oryza sativa L.)
    SR Pandey, AK Singh, R Pyare, A Tiwari, P Singh, S Tiwari
    INTERNATIONAL JOURNAL 8 (5), 2597-2599 , 2020
    2020
  • EVALUATION OF ARBUSCULAR MYCORRHIZAL FUNGAL FORMULATIONS ON YIELD AND TUBER CHARACTERISTICS OF POTATO (SOLANUM TUBEROSUM L.) CV. KUFRI SINDHURI
    T RAM, BK SINGH, AK TIWARI, PK SINGH, AK SINGH
    INTERNATIONAL JOURNAL 9 (8), 1943-1949 , 2020
    2020
  • Estimation of genetic variability, heritability and genetic advance among the genotypes/lines for seed yield and other economic traits in linseed Linum usitatissimum L
    SA Ankit, SP Singh, VK Singh, A Tiwari, A Singh
    Journal of Pharmacognosy and Phytochemistry 8 (2), 390-394 , 2019
    2019
    Citations: 10
  • Stability analysis and internal heating effect on oscillatory convection in a viscoelastic fluid saturated porous medium under gravity modulation
    BS Bhadauria, MK Singh, A Singh, BK Singh, P Kiran
    International Journal of Applied Mechanics and Engineering 21 (4), 785-803 , 2016
    2016
    Citations: 17
  • Synthesis and characterization of TI (III), V (IV), Fe (II) and Fe (III) complexes of Benzil-2,4-Dinitrophenyl Hydrazone p-Bromo Aniline
    AKS Rajkamal Rastogi, Sonu Sharma, Gulshan Rastogi
    Green Chemistry & Technology Letters 2 (4), 177-179 , 2016
    2016
  • Yield and quality of sugarcane influenced by various plant nutrients
    SP Yadav, SC Singh, AK Singh, AK Tiwari, SK Yadav, BL Sharma
    Agrica 5 (1), 47-50 , 2016
    2016
    Citations: 1
  • Assessment of indoor radon, thoron and their progeny levels in residential houses of Hardoi, Uttar Pradesh (India)
    A Kumar, AK Singh
    Green Chem Technol Lett 2, 62-7 , 2016
    2016
    Citations: 5
  • Eco-Friendly Liquid Phase Oxidation of Some Aromatic Aldehydes With Sodium Perborate Catalyzed by Iridium (III)
    AK Singh, R Sharma, AK Singh, DP Singh
    International Journal of Current Research and Academic Review 2 (6), 35 , 2014
    2014
  • Oxidation of cyclic alcohols by hexacyanoferrate (III) in alkaline medium in the presence of rhodium (III) chloride as a homogeneous catalyst
    PK Tandon, M Dhusia, AK Singh, SB Singh
    Open Catal. J 6, 29-36 , 2013
    2013
    Citations: 2
  • Environmental friendly conversion of organic compounds with H2O2 in the presence of iridium (III)
    AK Singh, R Sharma, AK Singh, DP Singh
    J. Environ. Sci. Toxicol. Food. Technol 1, 1-3 , 2012
    2012
    Citations: 2
  • Rhodium (III) Chloride Catalyzed Oxidation of Cyclic Alcohols by Hexacyanoferrate (III)
    ASMKS Alok Kumar Singh, Sanjay Kumar Sagar
    International Research Journal of Management Science & Technology 1 (1), 184-195 , 2009
    2009
  • Un-catalyzed oxidation of cyclic ketones by alkaline hexacyanoferrate (III)-Kinetic evidence for the formation of hydrates
    PK Tandon, S Kumar, AK Singh, N Srivastava
    Reaction Kinetics and Catalysis Letters 95 (1), 153-159 , 2008
    2008
    Citations: 2
  • Oxidation of cyclic alcohols by cerium (IV) in acidic medium in the presence of iridium (III) chloride
    PK Tandon, AK Singh, S Sahgal, S Kumar
    Journal of Molecular Catalysis A: Chemical 282 (1-2), 136-143 , 2008
    2008
    Citations: 18

MOST CITED SCHOLAR PUBLICATIONS

  • Oxidation of cyclic ketones by cerium (IV) in presence of iridium (III) chloride
    PK Tandon, S Sahgal, AK Singh, S Kumar, M Dhusia
    Journal of Molecular Catalysis A: Chemical 258 (1-2), 320-326 , 2006
    2006
    Citations: 27
  • Simple and economical conversion of organic compounds with H 2 O 2 catalyzed by ruthenium (III) chloride
    PK Tandon, R Baboo, AK Singh, Gayatri
    Applied organometallic chemistry 20 (1), 20-23 , 2006
    2006
    Citations: 23
  • Oxidation of cyclic alcohols by cerium (IV) in acidic medium in the presence of iridium (III) chloride
    PK Tandon, AK Singh, S Sahgal, S Kumar
    Journal of Molecular Catalysis A: Chemical 282 (1-2), 136-143 , 2008
    2008
    Citations: 18
  • Stability analysis and internal heating effect on oscillatory convection in a viscoelastic fluid saturated porous medium under gravity modulation
    BS Bhadauria, MK Singh, A Singh, BK Singh, P Kiran
    International Journal of Applied Mechanics and Engineering 21 (4), 785-803 , 2016
    2016
    Citations: 17
  • Simple one‐pot conversion of organic compounds by hydrogen peroxide activated by ruthenium (III) chloride: organic conversions by hydrogen peroxide in the presence of ruthenium …
    PK Tandon, R Baboo, AK Singh, Gayatri, M Purwar
    Applied organometallic chemistry 19 (10), 1079-1082 , 2005
    2005
    Citations: 17
  • Oxidation of ketones by ceric perchlorate catalysed by iridium (III)
    PK Tandon, S Sahgal, AK Singh, M Purwar
    Journal of Molecular Catalysis A: Chemical 232 (1-2), 83-88 , 2005
    2005
    Citations: 16
  • Estimation of genetic variability, heritability and genetic advance among the genotypes/lines for seed yield and other economic traits in linseed Linum usitatissimum L
    SA Ankit, SP Singh, VK Singh, A Tiwari, A Singh
    Journal of Pharmacognosy and Phytochemistry 8 (2), 390-394 , 2019
    2019
    Citations: 10
  • Oxidation of some hydroxy acids by alkaline hexacyanoferrate(III) catalysed by ruthenium(VIII)
    AK Singh
    Oxidation Communications 28 ((3)), 611-620 , 2005
    2005
    Citations: 9
  • Cocatalysis by ruthenium (III) in hydrogen ions catalyzed oxidation of iodide ions: A kinetic study
    PK Tandon, A Mehrotra, AK Singh, R Baboo, PB Dwivedi
    International journal of chemical kinetics 36 (10), 545-553 , 2004
    2004
    Citations: 8
  • Iridium (III) catalyzed oxidation of cyclic ketones by cerium (IV)
    PK Tandon, AK Singh, R Baboo, PB Dwivedi
    Transition metal chemistry 29 (6), 663-670 , 2004
    2004
    Citations: 8
  • Assessment of indoor radon, thoron and their progeny levels in residential houses of Hardoi, Uttar Pradesh (India)
    A Kumar, AK Singh
    Green Chem Technol Lett 2, 62-7 , 2016
    2016
    Citations: 5
  • Oxidation of cyclic alcohols by hexacyanoferrate (III) in alkaline medium in the presence of rhodium (III) chloride as a homogeneous catalyst
    PK Tandon, M Dhusia, AK Singh, SB Singh
    Open Catal. J 6, 29-36 , 2013
    2013
    Citations: 2
  • Environmental friendly conversion of organic compounds with H2O2 in the presence of iridium (III)
    AK Singh, R Sharma, AK Singh, DP Singh
    J. Environ. Sci. Toxicol. Food. Technol 1, 1-3 , 2012
    2012
    Citations: 2
  • Un-catalyzed oxidation of cyclic ketones by alkaline hexacyanoferrate (III)-Kinetic evidence for the formation of hydrates
    PK Tandon, S Kumar, AK Singh, N Srivastava
    Reaction Kinetics and Catalysis Letters 95 (1), 153-159 , 2008
    2008
    Citations: 2
  • A study on cost of cultivation and various income measures of pea in Jhansi district of Bundelkhand region of Uttar Pradesh
    N Khan, A Singh, A Tiwari
    International Journal of Agriculture Extension and Social Development 7, 867-869 , 2024
    2024
    Citations: 1
  • Bioefficacy Study of Bacillus subtilis Based Biofungicide on Leaf Spot Disease, Growth and Yield Attributes of Tomato [Solanum lycopersicum L.] CV. Arka Vikas
    AK Tiwari, BK Singh, AK Singh, PK Singh
    Current Journal of Applied Science and Technology 39 (7), 35-41 , 2020
    2020
    Citations: 1
  • Yield and quality of sugarcane influenced by various plant nutrients
    SP Yadav, SC Singh, AK Singh, AK Tiwari, SK Yadav, BL Sharma
    Agrica 5 (1), 47-50 , 2016
    2016
    Citations: 1
  • Smarter Chips, Safer Lives: Lab-on-a-chip Biosensors for Pharmacological Applications and Healthcare Transformation. Medical Research Archives,[online] 13 (3)
    I Tiwari, AK Singh
    2025
  • Valorization of waste pulp of citrus limetta for decontamination of chromium from polluted water
    Materials Today , 2023
    2023
  • ESTIMATION OF ANNUAL EFFECTIVE DOSE DUE 222 RN AND ITS PROGENY CONCENTRATION IN DWELLINGS OF BAREILLY CITY.
    EC Bulletin
    2023