Synthesis, characterization and catalytic activity of cobalt phthalocyanine tetrasulphonamide in sweetening of LPG

Das, Gautam; Sain, Bir; Kumar, Sunil; Garg, Mansi; Dhar, G. Murali

doi:10.1016/j.cattod.2008.04.009

Cited by 37 publications

(24 citation statements)

References 2 publications

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“…The partial differential equation, which holds for the diffusion process combined with chemical reaction for RSH component in the film, may be expressed as shown in Eq. (15). Considering negligible accumulation of mercaptans within the infinitesmal film, the equation is simplified to an ordinary differential equation [45] as shown in Eq.…”

Section: Gas-liquid Reaction Aspectsmentioning

confidence: 99%

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A Review on Gas‐Liquid Reactions in Light Oil Sweetening: Kinetics and Reactor Design Aspects

et al. 2014

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Thiols in liquefied petroleum gas are undesirable due to their foul odor and corrosive nature. The process of removing these thiols is termed as sweetening. Metal phthalocyanines are reported to be the most effective sweetening catalyst. However, the solubility of metal phthalocyanine is low in aqueous medium. Thus, in an effort to further improve upon the existing catalysts, a novel cobalt phthalocyanine sulfonamide catalyst was developed. Laboratory and commercial evaluation of this catalyst showed enhanced activity as compared to a commercial catalyst with comparable stability. With proven higher activity, comparable stability, design of grass root oxidizer using this catalyst is the next step. Design of oxidizers for an extractive sweetening process based on this catalyst in grass root refineries requires a rigorous kinetic model. The paper reviews the literature on sweetening kinetics and focuses on the concepts of design of laboratory reactors for reaction kinetics studies for such gas-liquid reactions. Laboratory reactor systems can be useful for accurate estimation of kinetic parameters which can then be used to design industrial reactors and predict their performance.

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Section: Gas-liquid Reaction Aspectsmentioning

confidence: 99%

“…Accordingly, in an effort to develop novel sweetening catalysts, the attention was drawn towards the amide group [13,14]. Thus, a novel cobalt phthalocyanine sulphonamide catalyst (CoPcS) higher in activity and of comparable stability when compared with commercial catalyst was developed [15,16].…”

Section: Processmentioning

confidence: 99%

A Review on Gas‐Liquid Reactions in Light Oil Sweetening: Kinetics and Reactor Design Aspects

et al. 2014

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“…There are different mechanisms of RSH-compounds oxidation to disulfides with complexes of phthalocyanines known from literature [33][34][35]. The mechanism based on possibility of triple complex formation with further cleavage of RS · radical is the most appropriate in our opinion.…”

Section: Catalytic Properties Of Cotspc1 and Cotspc2mentioning

confidence: 99%

A new water-soluble sulfonated cobalt(II) phthalocyanines: Synthesis, spectral, coordination and catalytic properties

Вашурин

Filippova

Znoyko

et al. 2015

J. Porphyrins Phthalocyanines

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Novel complexes of cobalt(II) with sulfonated derivatives of phthalocyanines are synthesized. The influence of the sulfonated group's number in peripheral substituent on solubility of macrocycle and ability to form ordered structures in solution is showed. Transition from H-aggregates to monomeric phthalocyanine structures and sandwich-type dimers was found during formation of metallophthalocyanine complexes with 1,4-diazabicyclo[2.2.2]octane. The catalytic activity of metallophthalocyanines was studied on the model of Merox process.

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“…19 Sulfonated phthalocyanines, both in the sulfonato and sulfonamide forms, are another group of such compounds. 20,21 Some sulfonated phthalocyanines show potential application as catalysts, 4,22 sensors, 20,23 while others are being studied as photosensitizers for photodynamic therapy. 24,25 In this Letter we describe a new method to synthesize symmetrically substituted phthalocyanines bearing eight sulfonamide groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of sulfonamide-substituted phthalocyanines

Carvalho

Calvete

Tomé

et al. 2009

Tetrahedron Letters

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Synthesis, characterization and catalytic activity of cobalt phthalocyanine tetrasulphonamide in sweetening of LPG

Cited by 37 publications

References 2 publications

A Review on Gas‐Liquid Reactions in Light Oil Sweetening: Kinetics and Reactor Design Aspects

A Review on Gas‐Liquid Reactions in Light Oil Sweetening: Kinetics and Reactor Design Aspects

A new water-soluble sulfonated cobalt(II) phthalocyanines: Synthesis, spectral, coordination and catalytic properties

Synthesis of sulfonamide-substituted phthalocyanines

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