Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Zdeněk Prokop"'
Publikováno v:
Reactive and Functional Polymers. 60:77-83
Bisphenol A is an important starting material for production of epoxy resins and polycarbonates, which is manufactured by ion exchanger resin catalyzed condensation of acetone and phenol. Much higher reaction rate is achieved when in the reaction env
Publikováno v:
Applied Catalysis A: General. 232:181-188
Swollen-state morphology of a series of ion exchanger catalysts was analyzed by inverse steric exclusion chromatography. Correlation of the obtained information with data on activities of the catalysts for synthesis of bisphenol A (BPA) served for qu
Autor:
Zdeněk Prokop, Karel Jeřábek
Publikováno v:
Collection of Czechoslovak Chemical Communications. 63:1907-1914
Possibilities of decreasing the ability of strong-acid ion-exchanger catalysts to retain water were investigated in a case study of bisphenol A synthesis for to diminish effects of water as reaction product on the kinetics of the catalyzed reaction.
Publikováno v:
Reactive and Functional Polymers. 33:103-108
Possibilities for enhancement of catalytic reaction rate by combining adsorptive (unfunctionalized) and catalytically active (functionalized) domains within the polymer skeleton of ion-exchanger catalysts have been studied. These catalysts were prepa
Publikováno v:
Chemical Papers. 66
This paper deals with two (main) problems of specific gold etching from parts of industrial equipment (e.g., supporting inserts into chambers for physical or chemical vapor deposition). First part of the paper is focused on selective etching of gold
Publikováno v:
Reactive Polymers. 23:107-112
Polymer adsorbents have been prepared by post-polymerization crosslinking of the swollen chloromethylated gel-type and macroreticular copolymers of styrene and divinylbenzene. Their morphology has been studied in the dry state by nitrogen adsorption/
Autor:
Zdeněk Prokop, Karel Jeřb́ek
Publikováno v:
Reactive Polymers. 18:221-227
The abilities of various polymer adsorbents to separate methanol from a hydrocarbon mixture were compared. The adsorption of methanol on basic ion-exchangers is partially irreversible due to the strong interaction of methanol with active groups. The
Publikováno v:
Collection of Czechoslovak Chemical Communications. 45:690-696
In connection with the study of polymer redox catalysts, the properties of condensation products of hydroquinone with chloromethylated styrene-divinylbenzene copolymers have been examined in more detail. It was found that only part of the hydroquinon
Autor:
Zdeněk Prokop, Karel Setínek
Publikováno v:
Collection of Czechoslovak Chemical Communications. 52:1272-1279
The course of the hydration of a mixture of 2-methyl-1-butene and 2-methyl-2-butene in dependence on the structure of strongly acidic styrene-divinylbenzene ion exchange resin catalysts has been studied. The most efficient catalysts turned out to be
Autor:
Zdeněk Prokop, Karel Setínek
Publikováno v:
Collection of Czechoslovak Chemical Communications. 47:1613-1620
Several methods aimed at increasing the catalytic activity of the sulphonated styrene-divinylbenzene macroporous ion exchanger Wofatit OK 80 have been tested. The activity of the prepared ion exchanger catalysts has been examined in three reactions o