Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Michael P. Rosynek"'
Publikováno v:
Journal of Catalysis. 191:55-61
An in situ diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS) study of n-hexane cracking over H-ZSM-5 and H-β zeolites has been carried out to elucidate the origin of first-order kinetics under bimolecular conditions. Contrary to a
Publikováno v:
The Journal of Physical Chemistry B. 104:2736-2742
Reaction probabilities of OH• radicals under steady state conditions were determined over TiO2 (anatase and rutile), SiO2 (fused quartz), α-Al2O3, and Au surfaces. The OH• radicals were produced from water in a microwave cavity and were detected
Publikováno v:
Catalysis Letters. 66:1-4
Conversion of methane in high yields to C4+ nonaromatic hydrocarbons was demonstrated in a recycle system. The principal components of the recycle system included an oxidative coupling reactor with a Mn/Na2WO4/SiO2 catalyst at 800°C for conversion o
Publikováno v:
Applied Spectroscopy. 53:1183-1187
The effect of laser heating on the local concentration of a white Ba(NO3)2 or BaO2 sample in a stationary in situ Raman cell, as determined by Raman spectroscopy, was addressed in this study. The decomposition of Ba(NO3)2 and crystalline BaO2, both s
Publikováno v:
Journal of Catalysis. 182:278-281
The effect of sodium poisoning on the activity forn-hexane cracking over H-ZSM-5, H-β, and dealuminated H-Y zeolites was compared with spectroscopic changes in the region of the stretching vibration of the surface hydroxyls. For all zeolites, there
Publikováno v:
The Journal of Physical Chemistry B. 103:818-824
Mono- and bimolecular intrinsic rate constants for the conversion of n-hexane over H−Y, H−ZSM-5, and H−β zeolites were measured at 623 K by combining conventional catalytic techniques with gravimetric adsorption measurements. Since H-zeolites
Publikováno v:
Journal of Catalysis. 178:352-362
The isomerization of n -hexane occurs over Pt-loaded H-β zeolites in a highly selective manner. At 250°C, with 45 Torr n -hexane and 2.0×10 3 Torr H 2 over a 0.65% Pt/H-β zeolite, the isomerization activity was 3.7 μmol g −1 s −1 , and the i
Publikováno v:
Journal of the Chinese Chemical Society. 45:481-489
Chlorided 0.57 wt. % Pt/γ-Al2O3 is a moderately active and highly selective catalyst for the isomerization of n-hexane at 300 °C when an excess of H2 is present. Chlorine, which is continuously lost from the catalyst, may be replaced by adding a sm
Publikováno v:
Journal of catalysis, 175, 338. Elsevier
The conversion of methane to benzene in the absence of oxygen has been investigated over different TMI/H-ZSM-5 zeolites (with TMI=Mo, Fe, V, W, and Cr) as a function of the preparation and treatment method, the metal ion loading, and the zeolite acid
Publikováno v:
Catalysis Letters. 52:31-36
During the conversion of methane to benzene in the absence of oxygen over a 2 wt% Mo/H-ZSM-5 catalyst at 700°C, three different types of surface carbon have been observed by X-ray photoelectron spectroscopy: adventitious or graphitic-like C (284.6 e