Showing posts with label thermodynamic activation parameters. Show all posts
Showing posts with label thermodynamic activation parameters. Show all posts

Wednesday, 31 May 2023

Oxidation Studies of Industrially Important Aliphatic and Cyclic Alcohols | Chapter 4 | Progress in Chemical Science Research Vol. 9

 The burning of industrially important aliphatic and recurrent studies has been studied utilizing inorganic and natural oxidants. The kinetic, thermodynamic and mechanistic aspects of the burning of alcohols have been examined. Transition metal ions have happened effectively used to oxidize alcohols to aldehydes/ketones.Oxidation of alcohols is an industrially main reaction flexible several useful output. Organic oxidants have been usually used to oxidize alcohols to carbonyl compounds but inorganic oxidants have exceptionally been secondhand. Literature survey also shows that change metal ions of the first series have existed sparingly used to ready for action the oxidation of alcohols.This chapter depicts the first order kinetics of the burning of straight  chain and branched aliphatic alcohols and recurrent alcohols by a variety of inorganic and basic oxidizing agents - Ce(IV) in sour medium and K2S2O8 in acidic medium, N-Bromosuccinimide in alkaline medium and N-Chloro 4-methylbenzenesulphonamide, sodium seasoning  in alkaline medium. The reliance of the oxidation rate on intoxicating and oxidant concentrations, ionic strength of response medium and temperature has existed studied in detail. The thermodynamic incitement parameters of the disintegration process have been determined from the difference of oxidation rate accompanying temperature and elucidated in terms of the molecular movement of the oxidation process.Suitable backlash mechanisms have been submitted for the oxidation of alcohols in the demeanor and absence of change metal ions. For each series of alcohols substitute, the sequence of corrosion rates has been explained on the footing of their steric, structural and isomeric determinants, ring size and chain length. The order of catalytic efficiency of the change metal ions has existed determined for each succession of alcohols under study and compared with the theoretically anticipated sequence.

Author(s) Details:

D. V. Prabhu,
Department of Chemistry, Wilson College (Affiliated to University of Mumbai), Mumbai 400007, India.

Chetana M. Rana,
Department of Chemistry, Wilson College (Affiliated to University of Mumbai), Mumbai 400007, India.

Harichandra A. Parbat,
Department of Chemistry, Wilson College (Affiliated to University of Mumbai), Mumbai 400007, India.

Muzaffar A. Tandel,
Department of Chemistry, Wilson College (Affiliated to University of Mumbai), Mumbai 400007, India.

Please see the link here: https://stm.bookpi.org/PCSR-V9/article/view/10698

Thursday, 2 February 2023

Oxidation Studies of Perfumery Phenols Found in Indian Spices| Chapter 8 | Recent Progress in Chemical Science Research Vol. 6

 The determinable aspects of the disintegration of phenols to the corresponding quinones have happened studied and reported in biography but there are few reports of the energetic, thermodynamic and mechanistic studies of the oxidation of phenols.This division deals with the decay of some perfumery phenols found in Indian spices by a difference of inorganic and natural oxidants using energetic methods.The burning of the perfumery isomeric phenols, Eugenol (4-Allyl-2-methoxy phenol) and Isoeugenol (2-Methoxy-4(prop-1-en-1-yl) phenol) has been carried out utilizing 1) inorganic oxidants,KBrO3,KIO3 and K2S2O8 in sour medium and 2)N-Bromosuccinimide and Sodium chloro(4-methylbenzene-1-sulfonyl)azanide (Chloramine T) in alkaline medium.These phenols are in the direction of the Indian spices,clove (Syzygium aromaticum), fruit (Myristicafragrans), Cinnamon (Cinnamomum zeylanicum) and Basil (Tulsi) (Ocimum basilium) and are used in the manufacture of perfumes,fragrances and flavouring powers.The oxidation was intentional under first order kinetic environments with respect to the oxidant ie.[oxidant]<<[phenol].For two together the phenols studied,the oxidation rate raised with phenol aggregation but decreased accompanying oxidant concentration.The sequences of decay rates of the phenols for the different oxidants has been told on the basis of their steric determinants,isomeric and structural appearance. From the variation of disintegration rate with temperature, the strength of activation and additional thermodynamic activation limits were evaluated and elucidated in terms of the microscopic dynamics of the oxidation process.Suitable backlash mechanisms have happened suggested for the burning of the phenols under study.

Author(s) Details:

Damodar V. Prabhu,
Department of Chemistry, Wilson College, Mumbai-400007, India.

Chetana N. Rana,
Department of Chemistry, N B Mehta Science College, Bordi, Dahanu, Palghar District, Maharashtra, India.

Harichandra A. Parbat,
Department of Chemistry, Wilson College, Mumbai-400007, India.

Muzaffar A. Tandel,
Department of Chemistry, Wilson College, Mumbai-400007, India.

Please see the link here: https://stm.bookpi.org/RPCSR-V6/article/view/9255