Authors:Francielle Q. Soares, Bruna F. Alvarenga, Marçal A. Ruggiero, Monise C. Casanova, Eliana M. Lima, Denilson Rabelo, and Andréa R. Chaves
Spectral Imaging (Peabody, MA, USA).
Nitrogen Adsorption Measurements
The specific surface area and poresizedistribution measurements were performed using a Micrometrics ASAP 2010 nitrogen sorption porosimeter. Analysis
Authors:Edjane F. B. Silva, Marcílio P. Ribeiro, Ana C. F. Coriolano, Ana C. R. Melo, Anne G. D. Santos, Valter J. Fernandes Jr., and Antonio S. Araujo
temperature of 77 K on a Quantachrome equipment NOVA-2000 model. Prior to adsorption measurement, the sample was degassed at temperature of 300 °C for 2 h. The specific surface area was determined by the BET method and the poresizedistribution was estimated
Authors:Sulene Araújo, Antonio Araujo, Nedja Fernandes, Valter Fernandes, and Massao Ionashiro
adsorption isotherm and poresizedistribution for MCM-41
The analysis by scanning electron microscopy was carried out in order to observe the morphology of the material. It can be observed in Fig. 3 that the sample of
the sample without application in the reaction. The micropores deceased to 22 %, while the mesopores increased to 56 %.
Surface areas, pore volumes and poresizedistributions of catalysts activated at
the evaporable water. The capillary porosity and pore-sizedistribution were investigated by mercury intrusion porosimetry carried out with a Micromeritics Pore Sizer IV 9600 V1.05, in a pressure range of 0.5-33000 psia
in an MCM-41 type material [ 19 ]. Figure 4 shows poresizedistributions for the calcined FA-derived F-MCM-41 materials. The poresizedistribution for these samples, as calculated by the BJH method, shows a sharp peak at about 2.7 nm for the F
Authors:D. Meloni, M. F. Sini, M. G. Cutrufello, R. Monaci, E. Rombi, and I. Ferino
and 0.54 cm 3 g −1 for MgNiAl(4.05). Pore-sizedistribution plots (not shown) exhibited an unimodal pore distribution centered at 3.8 nm.
The TPR profile of MgNiAl(4.05) is reported in Fig. 2 . It shows a sharp peak at 713 K, which merges
containing initially 10% of pitch-polymer compositions [ 18 , 19 ].
Based on earlier determined adsorption of benzene isotherms [ 19 ] it was calculated in this study poresizedistributions via effective radii for investigated sorbents ( Fig. 5
Authors:V. Logvinenko, V. Bakovets, and L. Trushnikova
Jiao , F , Hill , AH , Harrison , A , Berko , A , Chadwick , AV , Bruce , PG . Synthesis of ordered mesoporous NiO with crystalline walls and a bimodal poresizedistribution . J Amer Chem Soc . 2008 ; 130