M.M. Sharma

Jadavpur University

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Jyeshtharaj B. Joshi

Institute of Chemical Technology

Vilas G. Gaikar

Institute of Chemical Technology

T. Sridhar

Jawaharlal Nehru Technological University, Kakinada

Anurag Mehra

Centre for Policy Studies

Sanjay M. Mahajani

Indian Institute of Technology Bombay

B. Janakiraman

Sri Venkateswara University

Vinay A. Juvekar

Indian Institute of Technology Bombay

Avijit Bhowal

Jadavpur University

S. S. Mahajan

Monash University

S.S. Jayadeokar

University of Mumbai

Cooperative Institutions

University of Mumbai

Institute of Chemical Technology

University of Pittsburgh

National Chemical Laboratory

Monash University

Jadavpur University

Delft University of Technology

Indian Institute of Technology Bombay

University of Cambridge

University of Groningen

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Fast reactions in slurry reactors: Catalyst particle size smaller than film thickness: Oxidation of aqueous sodium sulphide solutions with activated carbon particles as catalyst at elevated temperatures

Chemical Engineering Science (1982)

Subodh K. Pal M.M. Sharma Vinay A. Juvekar

Particle (ecology)

Carbon fibers

Reaction rate

10.1016/0009-2509(82)80168-1

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Citations (60)

Laser Raman and infrared studies on hydrotropes and related materials

Journal of Chemical Sciences (1990)

S. B. Kartha Vilas G. Gaikar M.M. Sharma V. B. Kartha

10.1007/bf03040797

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Citations (2)

NOTE: EXTRACTIVE SEPARATIONS WITH HYDROTROPES

Solvent Extraction and Ion Exchange (1986)

Vilas G. Gaikar M.M. Sharma

ABSTRACT Hydrotropic substances, such as, sodium P-toluene sulfonate, potassium P -toluene sulfonate, sodium P -xylene sulfonate, potassium P-xylene sulfonate, sodium benzoate, potassium benzoate, etc., in aqueous solutions, at relatively high concentrations, have been used successfully to separate mixtures of close boiling point substances like 2,6-xylenol/P-cresol, pheno1/o-chlorophenol, P -chlorophenol/2,4-dichlorophenol, and o-cresol76-chloro-o-cresol, dissolved in a suitable solvent. Very high values of separation factor in the range of 10 to 66 have been realised and this novel method appears to be promising for industrial utilization.

Sodium benzoate

Boiling point

10.1080/07366298608917896

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Citations (66)

Sectionalised bubble column: Gas hold‐up and wall side solid—Liquid mass transfer coefficient

The Canadian Journal of Chemical Engineering (1984)

V. K. Patil Jyeshtharaj B. Joshi M.M. Sharma

Abstract The effect of gas sparger type, clear liquid height, liquid viscosity and addition of electrolyte on fractional gas hold‐up in a 0.38 m i.d. sectionalised bubble column (SBC) was studied for superficial gas velocities ranging from 0.03 to 0.15 m s −1 . A study of the wall side solid–liquid mass transfer coefficient, k SL , has been made by considering the dissolution of copper in acidic dichromate solutions. The variation of k SL with axial distance in a section for different gas velocities has been explained. A comparison between the performance of sectionalised bubble columns and conventional bubble columns has been presented. In some cases, the SBC may prove to be superior to bubble columns in practice.

Sparging

Mass transfer coefficient

10.1002/cjce.5450620210

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Citations (18)

Some design features of radial baffles in sectionalised bubble columns

The Canadian Journal of Chemical Engineering (1979)

Jyeshtharaj B. Joshi M.M. Sharma

10.1002/cjce.5450570321

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Citations (30)

Kinetics of Alkaline Hydrolysis of Esters. II. Unsaturated Esters and Oxalic Esters

Bulletin of the Chemical Society of Japan (1970)

Rahul Sharma M.M. Sharma

Abstract The kinetics of alkaline hydrolysis of some typical esters, with unsaturation in the alkyl and the acyl portions, was studied. It was found that, in general, unsaturation results in enhancing the rate as compared to that of the corresponding saturated esters, provided that there is no conjugation between the double bond and the carboxyl carbonyl group. Oxalic esters hydrolyze relatively very fast due to the close proximity of the two ester groups. Rate constants for the alkaline hydrolysis of di-n-propyl-, di-isopropyl-, di-n-butyl-, di-s-butyl-, dicyclohexyl- and di-β-chloroethyl oxalates were obtained by using the theory of mass transfer accompanied by fast pseudo first-order reaction (diffusion method).

Oxalic Acid

Alkaline hydrolysis

10.1246/bcsj.43.642

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Citations (21)

Application of phase transfer catalysis in the chemical industry

Springer eBooks (1997)

M.M. Sharma

Chemical industry

10.1007/978-94-009-0023-3_5

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Citations (5)

Microplastics in the Atmosphere

CRC Press eBooks (2023)

M.M. Sharma

Microplastics may be transported far through the atmosphere after recent reports of their presence in the atmosphere of urban, suburban, and even isolated areas far from their source regions. Recently, air debris captured from a few cities has also contained microplastics. Though the research is still in its early stages, some studies have found that synthetic fabrics are the main source of airborne microplastics and that the morphology of these particles in the atmosphere is most often that of fibres. Because of their small size, airborne microplastics pose health risks to people, especially industry employees. Both human activities and meteorological variables have an impact on the distribution and deposition of airborne microplastics. Additionally, microplastic pollution in aquatic habitats is a result of airborne microplastics. There are still questions that need to be resolved about the presence, fate, transportation, and effects of air microplastics. These concerns are brought on by the absence of standardised sampling and identification techniques as well as by the limited physical analysis and knowledge of the pollution caused by atmospheric microplastics. We review the available research in this book chapter and offer suggestions for additional studies to learn more about airborne microplastics and the dangers they pose to people.

10.1201/9781003449133-4

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Citations (0)

Heterogeneous reactions: Analysis examples and reactor design. Vol. 1: Gas solid and solid-solid reactions

L. K. Doraiswamy M.M. Sharma

This two-volume text provides a comprehensive treatment of heterogeneous reactions as they are used in industry. Begins with intrinsic chemical reactions on a solid surface. Discusses the behavior of solid pellets under the simultaneous influence of reaction and diffusion and analyzes the design of reaction and diffusion and analyzes the design of reactor systems carrying out gas-solid reactions. Illustrations, extensive tables, worked problems, and examples from actual industries supplement the text.

Solid surface

Source

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Citations (48)

Cationic ion exchange resins as catalyst

Reactive Polymers (1993)

Animesh Chakrabarti M.M. Sharma

Ion-exchange resin

Reactivity

Cationic polymerization

Isobutylene

Reactive distillation

10.1016/0923-1137(93)90064-m

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Citations (376)