Some molybdenum-containing chelating ion-exchange resins (polyampholites) as catalysts for the epoxidation of alkenes by organic hydroperoxides

Котов, С. В.; Boneva, S.; Kolev, Tsonko

doi:10.1016/s1381-1169(99)00363-5

Cited by 22 publications

(5 citation statements)

References 19 publications

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“…Furthermore, the formation of 3-tert-butylcyclohexenyl peroxide is an indication of the occurrence of radical reactions. [25][26][27][28] TBHP as the oxidant promotes the allylic oxidation pathway and the extent of epoxidation is reduced. The effect of molecular oxygen in the cyclohexene epoxidation reaction with tBuOOH has also been reported.…”

Section: Catalytic Behaviour Of the Modified Zeolitementioning

confidence: 99%

Copper(II)–Purine Complexes Encapsulated in NaY Zeolite

et al. 2007

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Y-encapsulated CuII -purine complexes were synthesized, characterized and studied in the catalytic oxidation of cyclohexene. Encapsulation was achieved by ion-exchanging the complex from aqueous solutions containing both the purine ligand, 9-methyl-6-(methylamino)purine, and copper, in different pH, with a purine/Cu II molar ratio of 5:1. The resulting materials were characterized by surface analysis (XPS, SEM and XRD), chemical analysis, spectroscopic methods (EPR, FTIR and UV/Vis) and thermal analysis (TGA), which indicated that the Cu II -purine complexes were effectively encapsulated in NaY, most probably inside the supercages, without any modification of the morphology and structure of the zeo-

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Section: Catalytic Behaviour Of the Modified Zeolitementioning

confidence: 99%

Copper(II)–Purine Complexes Encapsulated in NaY Zeolite

et al. 2007

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“…19 Molybdate is generally considered as an excellent catalyst. 20,21 A great deal of wastewater containing molybdate is drained in industrial processes, for instance in the metallurgical industry, pigments industry, and MoS 2 based lubricants production. This Mo-containing wastewater causes serious heavy metal pollution.…”

Section: Introductionmentioning

confidence: 99%

Porous graphitic carbon prepared from the catalytic carbonization of Mo-containing resin for supercapacitors

Tao¹,

Hu²,

Wang³

et al. 2014

RSC Adv.

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“…In order to improve the selectivity of the ion exchange resins for molybdenum removal and avoid the competition of other anions, innovative ligand and chelating resins have been suggested. The uptake of molybdenum from aqueous solutions can be facilitated by some commercially available bifunctional chelating cation exchange resins (polyampholites) [107]. The results demonstrated that the polyampholites containing carboxylic functional groups (Amberlite IRC718 and Amberlite IRC748 with iminodiacetic functional groups) were more susceptible toward the sorption of molybdenum-containing species from aqueous solutions than Duolite C467, which contains phosphonic acid groups.…”

Section: Adsorption and Ion Exchangementioning

confidence: 99%

An Overview to Technical Solutions for Molybdenum Removal: Perspective from the Analysis of the Scientific Literature on Molybdenum and Drinking Water (1990–2019)

Abejón

2022

Water

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A bibliometric analysis using the Scopus database was performed to investigate the research documents published from 1990 to 2019 in scientific sources related to molybdenum in drinking water and determine the quantitative characteristics of the research in this period. The results from the analysis revealed that the number of publications was maintained at a regular production of around 5 papers per year until 2009, followed by a fast linear increase in the production in the period from 2010 to 2016 (29 papers in 2016), but the scientific production regarding this topic was reduced in 2017 and 2018 to recover the production obtained in 2016 once again in 2019. The total contribution of the three most productive countries (USA, China and India, respectively) accounted for around 50% of the total number of publications. Environmental Science was the most common subject (51.4% contribution), followed by Chemistry (26.7% contribution). The research efforts targeted toward the search for technical solutions for molybdenum removal from water are not as important as the ones focused on the identification of molybdenum-polluted water bodies and the analysis of the health effects of the intake of molybdenum. Nevertheless, examples of technological treatments to remove molybdenum from the aqueous solution include the use of adsorption and ion exchange; coagulation, flocculation and precipitation followed by filtration; membrane technologies and biological treatments.

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Some molybdenum-containing chelating ion-exchange resins (polyampholites) as catalysts for the epoxidation of alkenes by organic hydroperoxides

Cited by 22 publications

References 19 publications

Copper(II)–Purine Complexes Encapsulated in NaY Zeolite

Copper(II)–Purine Complexes Encapsulated in NaY Zeolite

Porous graphitic carbon prepared from the catalytic carbonization of Mo-containing resin for supercapacitors

An Overview to Technical Solutions for Molybdenum Removal: Perspective from the Analysis of the Scientific Literature on Molybdenum and Drinking Water (1990–2019)

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