Catalytic activity of styrene/divinylbenzene copolymeric support immobilized with imidazolium ionic liquids in disproportionation of trichlorosilane

Highly selective catalytic systems with porous polymer supports immobilized with ionic liquids, which contained acceptor and donor substituents as well as various anions, were developed. Their effect on activity of the catalysts in disproportionation of trichlorosilane was studied. The catalytic activity of systems based on N-methoxy-4-methylimidazole with different counterions was shown to decrease with the growth of chemical activity of the anions from iodine to fluorine.

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Evaluation of catalytic activity of two functionalized imidazolium ionic liquids for biodiesel fuel production by a two-stage process

Journal of Chemical Technology & Biotechnology ◽

10.1002/jctb.4191 ◽

2013 ◽

Vol 89 (7) ◽

pp. 998-1006 ◽

Cited By ~ 7

Author(s):

Yasir A. Elsheikh ◽

Zakaria Man ◽

Azmi Bustam ◽

Suzana Yusup ◽

Faheem H. Akhtar ◽

...

Keyword(s):

Catalytic Activity ◽

Ionic Liquids ◽

Biodiesel Fuel ◽

Fuel Production ◽

Two Stage ◽

Imidazolium Ionic Liquids ◽

Stage Process

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Improved Stability and Catalytic Activity of Palladium Nanoparticle Catalysts using Phosphine-Functionalized Imidazolium Ionic Liquids

Advanced Synthesis & Catalysis ◽

10.1002/adsc.201100551 ◽

2011 ◽

Vol 353 (17) ◽

pp. 3167-3177 ◽

Cited By ~ 38

Author(s):

Kylie L. Luska ◽

Audrey Moores

Keyword(s):

Catalytic Activity ◽

Ionic Liquids ◽

Palladium Nanoparticle ◽

Imidazolium Ionic Liquids ◽

Nanoparticle Catalysts ◽

Improved Stability

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The effect of partial exchange of sulphonated macroporous styrene-divinylbenzene copolymers for different ions on their catalytic activity

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19812354 ◽

1981 ◽

Vol 46 (10) ◽

pp. 2354-2363 ◽

Cited By ~ 4

Author(s):

Svatomír Kmošták ◽

Karel Setínek

Keyword(s):

Catalytic Activity ◽

Transition Metal ◽

Metal Ions ◽

Gas Phase ◽

Transition Metal Ions ◽

Exchange Capacity ◽

Total Exchange Capacity ◽

Styrene Divinylbenzene ◽

Na Ions ◽

Type Of Transition

The catalytic activity of sulphonated macroporous styrene-divinylbenzene copolymers, the exchange capacity of which was neutralized from 30, 50 and 80% by Fe(III) ions and from 30% by Na ions and that of Wofatit Y-37 ion exchanger neutralized from 10% of its total exchange capacity by several transition metal ions and by sodium has been studied in isomerisation of cyclohexene and dehydration of 1-propanol in the gas phase at 130 °C. It was demonstrated that in both reactions transition metal ions exhibit additional effect to the expected neutralization of the polymer acid groups. In the case of cyclohexene isomerization, this effect depends on the degree of crosslinking of polymer mass of the catalyst. Such dependence has not been, however, observed in dehydration of 1-propanol. The type of transition metal ions did not exhibit any significant effect on the catalytic activity of the polymer catalysts studied.

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Polymer structure and catalytic activity of ion exchangers

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19811577 ◽

1981 ◽

Vol 46 (7) ◽

pp. 1577-1587 ◽

Cited By ~ 8

Author(s):

Karel Jeřábek

Keyword(s):

Catalytic Activity ◽

Ethyl Acetate ◽

Active Sites ◽

Crosslinking Agent ◽

Reaction Medium ◽

Polymer Structure ◽

Local Concentration ◽

Ion Exchangers ◽

Styrene Divinylbenzene ◽

Kinetics Of

Catalytic activity of ion exchangers prepared by partial sulphonation of styrene-divinylbenzene copolymers in reesterifications of ethyl acetate by methanol and propanol, hydrolysis of ethyl acetate and in synthesis of bisphenol A has been compared with data on polymer structure of these catalysts and with distribution of the crosslinking agent, divinylbenzene, calculated from literature data on kinetics of copolymerisation of styrene with divinylbenzene. It was found that the polymer structure of ion exchangers influences catalytic activity predominantly by changing the local concentration of acid active sites. The results obtained indicated that the effect of transport phenomena on the rate of catalytic reactions does not depend on the degree of swelling of the ion exchangers in reaction medium but it is mainly dependent on the relative affinity of reaction components to the acid groups or to the polymer skeleton.

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