Comparative study of “ship-in-a-bottle” and anchored heterogenized Rh complexes

Zsigmond, Ágnes; Bogár, Krisztián; Notheisz, Ferenc

doi:10.1016/s0021-9517(02)00023-4

Cited by 51 publications

(32 citation statements)

References 15 publications

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“…Studying a similar comparison in the hydrogenation of 2-methylpenthenoic acid we have observed a better performance of the anchored catalyst, showing several times higher activity, than the encapsulated one [12]. In this study the higher activity was preserved in three subsequent runs without any significant changes.…”

Section: Catalysts Recyclingsupporting

confidence: 72%

“…However, the results of encapsulated complex is in contradiction with the above observation. Comparing the performance of the two immobilized samples, the trend is similar to that in a different system [12]. Studying the hydrogenation of 2-methylpenthenoic acid on heterogenized Rh(cyclooctadiene)(L-prolinamide) catalysts (prepared by encapsulation and anchoring on NaY zeolite) we have observed that the activity of the anchored complex is several times higher than the encapsulated one.…”

Section: Comparative Study Of Immobilized Phthalocyanines In Oxidativsupporting

confidence: 58%

“…The zeolite-encapsulated iron phthalocyanine was prepared by the intrazeolite synthesis method under Ar [12]. Fe 2+ -containing zeolite were prepared by ion exchange for 3 h at 50 o C, using 2 g of NaY zeolite and 40 ml of 1N FeSO 4 x 7 H 2 O.…”

Section: Catalystsmentioning

confidence: 99%

“…Several different strategies were introduced to immobilize metal complexes, which can be divided into two basic directions: 1. to built the complex inside a porous support [11,12] 2. to graft into the surface of a support [13,14]. The performance of the immobilized complexes were compared to the performance of the homogeneous analogues and usually the heterogenized complexes had higher activity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of Immobilized Phthalocyanines in Oxidative Degradation

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Demjén

Notheisz

et al. 2012

TOCATJ

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Immobilized iron phthalocyanine catalysts were prepared, via two heterogenization methods: anchoring by Augustine's method and the preparation of a "ship-in-a-bottle" type catalyst by intrazeolite synthesis method. The heterogenized catalysts were applied in the oxidative destruction of 4-chlorophenol, as a common pollutant of waste water. The performance of the two heterogenized and the homogeneous complexes were compared and it was found that the immobilized complexes had about the same activity as the homogeneous analog. Both heterogenized samples could be recycled in three subsequent runs and the "ship-in-a-bottle" type showed stable activity. Meanwhile, the anchored complex lost some activity in every subsequent run. Consequently, the first catalyst was better for practical application.

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Section: Catalysts Recyclingsupporting

confidence: 72%

Section: Comparative Study Of Immobilized Phthalocyanines In Oxidativsupporting

confidence: 58%

Section: Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparative Study of Immobilized Phthalocyanines in Oxidative Degradation

Bata

Demjén

Notheisz

et al. 2012

TOCATJ

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show abstract

“…To combine advantages of both catalysts might be done by heterogenization of homogeneous catalysts into support material [1][2][3][4]. Silica, mesoporous silica (MCM-41, MCM-48, and SBA-15) are examples of inorganic supports while polymer P4VP as organic support which are used to employe for that purpose [9][10][11].…”

Section: Introductionmentioning

confidence: 99%