Anticipating Future Geriatric Pharmacy Services in Iran

Ghaeli, Padideh; Banaha, Nafiseh

doi:10.18502/jpc.v8i4.5233

Cited by 1 publication

(3 citation statements)

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“…The use of H 2 O 2 as an oxidant instead of air and acetic acid as a catalyst is also reported in the literature. [6,[46][47][48] Some studies focus on the kinetics of catalytic ODS. For example, Motahari et al [49] determined reaction kinetics of catalytic oxidation of light mercaptans of LPG in the Merox process.…”

Section: Introductionmentioning

confidence: 99%

“…The regeneration of a spent aqueous ammonia is easy; it includes heating (boiling), which leads to a hydrolytic decomposition of ammonium sulphides and mercaptides to release their constituent gases: hydrogen sulphide, mercaptans, and ammonia. [47] Ammonia is recycled into the process as regenerated caustic ammonia. [27,51,53] A catalyst based on the tetrabutylammonium salt of phosphotungstic acid, TBA3PW12O40 (PW12), which is capsulated in the chromium terephthalate metal-organic framework MIL-101, was synthesized.…”

Section: Introductionmentioning

confidence: 99%

“…The use of H 2 O 2 as an oxidant instead of air and acetic acid as a catalyst is also reported in the literature. [ 6,46–48 ]…”

Section: Introductionmentioning

confidence: 99%

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Performance of a novel cobalt phthalocyanine sulfonamide‐based catalyst for oxidative desulphurization of gas condensate

Mirvakili,

Baghzar,

Hooshyar

et al. 2024

Can J Chem Eng

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Sulphur compounds and mercaptans in gas condensate cause corrosion problems, poison catalysts in catalytic processes, and have adverse environmental impact through SOx emission upon combustion. Therefore, it is essential to remove sulphur and mercaptan from gas condensate to standard levels. In this study, the oxidative desulphurization (ODS) process in the presence of a cobalt phthalocyanine sulfonamide‐based catalyst was investigated. The homogeneous catalyst containing 23 wt.% active material was used and optimum operating conditions of temperature, volume ratio of caustic to gas condensate, caustic concentration, and solvent amount were determined to decrease sulphur content to less than 500 ppm and mercaptan to less than 200 ppm. The catalyst consumption in all experiments was kept constant at a minimum level (0.01 g/400 mL gas condensate). Results showed that this catalyst improved the reaction rate in the lower temperature and lower caustic to feed ratio and lower caustic concentration. The maximum sulphur removal was obtained at 5°C and 4 vol.% of caustic to gas condensate ratio at 16.7 wt.% of caustic concentration. Moreover, this catalyst improved sulphur removal from the gas condensate to about 5% compared to caustic sweeting without catalyst. Sulphur compounds had higher solubility in acetone rather than methanol, and sulphur removal by acetone was 96% while it was 91% for methanol. Finally, the economical and acceptable solvent for sulfoxides removal was methanol with 5% volume fraction.

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Section: Introductionmentioning

confidence: 99%