Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Ch. Peuker"'
Publikováno v:
Microporous and Mesoporous Materials. 29:109-115
The removal of carbonaceous deposits formed during the conversion of methanol to hydrocarbons on zeolite H-ZSM-5 was investigated in a thermobalance system coupled with an IR spectrometer. Using different carrier gases, the effect of thermal treatmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1146aa1a6534ada4ec76aea9713f387
https://doi.org/10.1016/s1387-1811(98)00324-2
https://doi.org/10.1016/s1387-1811(98)00324-2
Publikováno v:
Zeolites. 17:278-282
Our research shows that 18O exchange in NaZSM-5 causes isotopic shifts of the Raman bands of the sample. Shifts of i.r. bands were also detected for framework vibrations and for hydroxyl vibrations as well as for the appropriate combination modes in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f2ec995754b9350461ef6ef16d764b2
https://doi.org/10.1016/0144-2449(96)00007-3
https://doi.org/10.1016/0144-2449(96)00007-3
Autor:
Ch. Peuker
Publikováno v:
Journal of Molecular Structure. 349:317-320
IR spectroscopy is one of the most common spectroscopic methods for investigation of OH groups in zeolites and related materials. Zeolites contain a variety of OH groups, most of which have been studied by measuring the OH stretching vibration bands
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1d5ae781adb1067397a96217e9bc7c5
https://doi.org/10.1016/0022-2860(95)08773-o
https://doi.org/10.1016/0022-2860(95)08773-o
Publikováno v:
The Journal of Physical Chemistry. 97:5678-5684
Ge-ZSM-5 zeolites have been synthesized and characterized by SEM, n-hexane adsorption, XRD, MAS NMR, IR, and Raman spectroscopy. Despite the large size of the germanium atoms, up to 12.8 Ge/unit cell could be incorporated into the MFI framework. In o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73ac64bd869815c462abe8aa668a0983
https://doi.org/10.1021/j100123a036
https://doi.org/10.1021/j100123a036
Autor:
Ch. Peuker, Ch. Splett
Publikováno v:
Journal of Molecular Structure. 294:231-234
The DRIFT spectra of molecular sieves of type A, X, ZSM-5 and SAPO are measured. It is demonstrated that in some cases the overtone and combination tone bands of the lattice vibrations may be used for characterizing the structure of molecular sieves.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::165c4394b41e3fa8f9e9fd3b2c7e6eb3
https://doi.org/10.1016/0022-2860(93)80357-2
https://doi.org/10.1016/0022-2860(93)80357-2
Publikováno v:
Journal of Molecular Structure. 293:269-272
The fundamental and combination vibrations of hydroxyl groups in zeolites (Y, ZSM-5) and silicoaluminophosphates (SAPO-5, -17, -34) are investigated. The influence of adsorbed molecules (C 6 F 6 , n-hexane) on the combination vibrations is also studi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0403bd24dc6f228e0c3458d2448cf973
https://doi.org/10.1016/0022-2860(93)80065-4
https://doi.org/10.1016/0022-2860(93)80065-4
Publikováno v:
ChemInform. 23
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3daacb1b895b7f33aa4a441bb2852a6
https://doi.org/10.1002/chin.199207020
https://doi.org/10.1002/chin.199207020
Publikováno v:
ChemInform. 24
The influence of isomorphous substitution of silicon by gallium in the MFI framework on lattice crystallinity and defect sites is investigated. The Ga-ZSM-5 zeolites are characterized by XRD, n-hexane adsorption, IR, TPD of ammonia, TG–DTA, MAS NMR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d59c5039e12ab23c7b28cd97a480d5e6
https://doi.org/10.1002/chin.199328303
https://doi.org/10.1002/chin.199328303
Publikováno v:
ChemInform. 24
Ge-ZSM-5 zeolites have been synthesized and characterized by SEM, n-hexane adsorption, XRD, MAS NMR, IR, and Raman spectroscopy. Despite the large size of the germanium atoms, up to 12.8 Ge/unit cell could be incorporated into the MFI framework. In o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf6f2b3c7a8ab6a7bb1ea818ad431f0f
https://doi.org/10.1002/chin.199336006
https://doi.org/10.1002/chin.199336006
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 96:1761-1765
Ge–ZSM-5 zeolites are characterized by XRD and IR Spectroscopy in the spectral range of lattice and hydroxyl vibrations. XRD data confirm the high crystallinity of hydrothermally synthesized Ge–ZSM-5 samples. The incorporation of germanium into t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22662b9d1cc391e93a044a44ee5c41cb
https://doi.org/10.1002/bbpc.19920961147
https://doi.org/10.1002/bbpc.19920961147