Zobrazeno 1 - 9
of 9
pro vyhledávání: '"J. A. Szymura"'
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 34:3379-3387
A novel slurry reactor was used to investigate the copolymerization behavior of ethylene and 1-butene in the presence of 1 wt % Cr on Davison silica (Phillips-type) catalyst over the temperature range of 0–50°C, space velocity of about 0.0051 [m3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b6daba3d02213b5ce24aebe382de72d
https://doi.org/10.1002/(sici)1099-0518(19961130)34:16<3379::aid-pola15>3.0.co
https://doi.org/10.1002/(sici)1099-0518(19961130)34:16<3379::aid-pola15>3.0.co
Publikováno v:
Catalysis Letters. 15:145-153
Ethylene polymerization was carried out over both porous and non-porous 5 wt% Cr/silica catalysts in a slurry reactor. The polymerization was stopped at selected times to obtain samples for SEM and TEM characterization. Despite the different physical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38afa7865927a13241cb48fa0460c66a
https://doi.org/10.1007/bf00770907
https://doi.org/10.1007/bf00770907
Publikováno v:
Catalysis Letters. 13:331-339
High temperature treatment under vacuum or in a pure N2 atmosphere can be used instead of a reduction step to activate Cr/SiO2 catalysts used for ethylene polymerization. After this procedure, the Cr species active over a range of temperature has bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c02c18889d20271a138e87c41b7d80a
https://doi.org/10.1007/bf00765035
https://doi.org/10.1007/bf00765035
Autor:
S, Hofman, J M, Szymura
Publikováno v:
Biochemical genetics. 38(7-8)
Segregation and linkage relationship of nine allozyme loci, which are fixed for alternative alleles in the European fire-bellied toads, Bombinal bombina and B. variegata, were studied using artificial F1 hybrids to obtain backcross and F2 progeny. Al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::aca5c21d338d7ec34deb19f8cc0b5079
https://pubmed.ncbi.nlm.nih.gov/11131340
https://pubmed.ncbi.nlm.nih.gov/11131340
Ethylene polymerization was carried out in a slurry micro reactor (100 cm3) under mild reaction conditions (25°C, P(C2H4) = 1 atm) to slow the polymerization rate during the early stages of reaction on a 5 wt% Cr/SiO2 support catalyst. Polymer yield
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f56583ae5eaed2468d8d3057a7401a7
https://doi.org/10.1016/s0167-2991(08)60798-3
https://doi.org/10.1016/s0167-2991(08)60798-3
Publikováno v:
Evolution. 52:227
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ac922db5acc4e5299eec244aee63de1
https://doi.org/10.2307/2410938
https://doi.org/10.2307/2410938
Autor:
Tadeusz Paryjczak, J. A. Szymura
Publikováno v:
Reaction Kinetics and Catalysis Letters. 13:345-350
Dispersity of palladium for a series of Pd/SiO2 catalysts has been determined by TEM and H2−O2 chemisorption. The mean crystallite dimensions obtained by these methods have been compared. Assuming O/Pds to be 0.6 for Pd crystallites larger than 9 n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5692116b69dd71166ce77d3c5e18abe7
https://doi.org/10.1007/bf02065697
https://doi.org/10.1007/bf02065697
Autor:
J. A. Szymura, T. Paryjczak
Publikováno v:
Reaction Kinetics and Catalysis Letters. 12:219-223
Redispersion of Re/SiO2 catalysts during air-aging at ambient temperature has been confirmed by TEM analysis. The splitting of large primary crystallites (>10 nm) under the influence of the strain energy of the oxide layer formed on the Re surface ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b328a2a51cc1be5d4d081fc44cc0a330
https://doi.org/10.1007/bf02064246
https://doi.org/10.1007/bf02064246
Autor:
T. Paryjczak, J. A. Szymura
Publikováno v:
Chemischer Informationsdienst. 10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94443be234a7f6adcfd3c7c8893a99f3
https://doi.org/10.1002/chin.197921029
https://doi.org/10.1002/chin.197921029