Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Jianyi Shen"'
Publikováno v:
Microporous and Mesoporous Materials. 309:110591
Mesoporous melamine formaldehyde resins (MMF) with high surface areas and large pore volumes and diameters were prepared without the use of a template. Conditions such as solvent, concentration, formaldehyde/melamine ratio and curing temperature and
Publikováno v:
Thermochimica Acta. 494:99-103
Microcalorimetric adsorption technique was employed to study the interaction of the reactants and product in the 1,2-dichloroethane hydrodechlorination over Pt/SiO 2 , Cu/SiO 2 and Pt–Cu/SiO 2 catalysts in order to understand the high selectivity t
Publikováno v:
Microporous and Mesoporous Materials. 116:614-621
Chlorine free mesoporous TiO2 nanotubes (TNT) with high surface areas were prepared and used to support V2O5. The addition of V2O5 increased the surface acidity of TNT, which was further enhanced by the addition of Ti(SO4)2. The materials were charac
Publikováno v:
Thermochimica Acta. 434:50-54
The surface acidic and redox properties of CeO 2 , MoO 3 , mechanically mixed CeO 2 -MoO 3 and co-precipitated Ce-Mo-O catalysts were characterized by using microcalorimetric adsorption of ammonia and isopropanol (IPA) probe reaction, and the surface
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 72:209-221
The surface acidity of SiO2, γ-Al2O3 and TiO2 supported vanadia catalysts has been studied by the microcalorimetry and infrared spectroscopy using ammonia as the probe molecule. The acidity in terms of nature, number and strength was correlated with
Autor:
Jianyi Shen, Mingshi Li
Publikováno v:
Thermochimica Acta. 379:45-50
The microcalorimetric adsorption of H 2 and O 2 has been employed to probe the dispersion of metals and surface composition of the bimetallic Pd-Cu/SiO 2 and Pd-Ag/SiO 2 catalysts. In addition, the microcalorimetric adsorption of ethylene was carried
Autor:
Mingshi Li, Jianyi Shen
Publikováno v:
Materials Chemistry and Physics. 68:204-209
Pd/SiO2 and Pd–Ag/SiO2 catalysts prepared by incipient wetness impregnation method were studied by using the techniques of microcalorimetric adsorption and infrared spectroscopy for the adsorption of H2, CO and ethylene at room temperature. It is f
Autor:
Jianyi Shen, Hu Zou
Publikováno v:
Thermochimica Acta. 351:165-170
The number and strength of surface acid and base sites on the ZnO/γ-Al 2 O 3 catalysts were quantitatively measured by the technique of microcalorimetric adsorption (MA) while the nature of the acid and base sites were identified by Fourier transfor
Publikováno v:
Thermochimica Acta. 345:19-23
Microcalorimetric adsorption and FTIR were used to study the surface species and energy of surface bonding for ethylene adsorption on Ni/SiO2 and NiBi/SiO2 catalysts. Microcalorimetric adsorption of H2 was employed to titrate the surface sites of Ni
Publikováno v:
Langmuir. 16:2213-2219
Microcalorimetric and infrared spectroscopic (FTIR) measurements for the adsorption of ethylene on Pd/SiO2 and Pd/Sn/SiO2 catalysts (4 wt % Pd, Pd/Sn = 3) have been performed at temperatures of 300, 263, and 233 K. In addition, microcalorimetric meas