Zobrazeno 1 - 10
of 31
pro vyhledávání: '"T. Romotowski"'
Publikováno v:
Materials Research Innovations. 2:57-63
The influence of electron dosage on the field induced strain, dielectric constant, and polarization response has been investigated in electron irradiated poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) 50/50 copolymer. It was found that und
Publikováno v:
Zeolites. 14:629-634
Properties of the ZSM-5 zeolite modified with VO2+ ions in a one-step exchange reaction in water medium have been investigated. Physicochemical characterization (chemical analysis, XRD, MAS n.m.r., e.s.r.) shows that during the preparation the ZSM-5
Publikováno v:
Russian Chemical Bulletin. 42:1643-1648
The interactions between C3H6, AcOH and O2 were investigated on 1.5 % Pd/TsVM catalysts prepared with and without addition of 15 % AcOK. Three states for surface oxygen on the promoted catalyst were distinguished. Two of them are involved in the oxid
Autor:
Jan Rakoczy, T. Romotowski
Publikováno v:
Zeolites. 13:256-260
Chemisorption of CH 3 OH and CD 3 OD on NaY and HY zeolites was investigated by i.r. spectroscopy. The reaction “in situ” of methoxy groups with benzene was observed. It was found that the first step of methylation of the benzene ring is the chem
Publikováno v:
Reaction Kinetics & Catalysis Letters. 46:193-197
The dehydroxylation of 3610 cm−1 OH groups in HZSM-5 zeolite and in two Ni and Mo modified catalysts containing the same zeolite has been studied at 673 K. The presence of water vapor is a necessary condition of dehydroxylation, the extent of which
Publikováno v:
Collection of Czechoslovak Chemical Communications. 57:969-977
Hydrocracking of n-hexane and diesel oil fraction over presulfided NiMo, Mo and Ni catalysts has been carried out using a high pressure flow reactor system. The ion-exchanged form of ZSM-5 extrudates (50% alumina binder) was loaded with 2-20 wt.% of
Publikováno v:
Zeolites. 11:491-496
The direct treatment of NaZSM-5 zeolite with aluminum salt solution without an intermediate ammonium form was applied to obtain as neutral AINaZSM-5 zeolites as possible. It was possible to prepare very weakly acidic, or almost neutral samples, using
Publikováno v:
Zeolites. 11:497-501
Properties of acid centers in AlNaZSM-5 zeolites were studied by recording low-temperature i.r. spectra of adsorbed CO. Only a small amount of sodium in NaZSM-5 zeolite can be exchanged for aluminum cations. The majority of inserted aluminum cations
Summary Procedures leading to preparation of vanadium-doped alumina-and/or titania-pillaredmontmorillonites are described and physicochemical characterization (chemical analysis, XRD, BET, ESR) of the products is provided. Results show that introduct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cd1a7af87fab7e83a5f2937edbea0e5
https://doi.org/10.1016/s0167-2991(06)81815-x
https://doi.org/10.1016/s0167-2991(06)81815-x
Publikováno v:
The Journal of the Acoustical Society of America. 105:1394-1394
Electroactive materials for applications in active noise and vibration control should possess a high displacement capability, high reliability, and be easily fabricated to conform to complicated surfaces and shapes. Apparently, almost all the current