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Journal of Thermal Analysis and Calorimetry
Authors: Maria J. F. Costa, Antonio S. Araujo, Edjane F. B. Silva, Mirna F. Farias, Valter J. Fernandes Jr., Petrus d’Amorim Santa-Cruz, and José G. A. Pacheco

catalysis and adsorption technologies [ 4 – 7 ]. This study aims to obtain optimized structures of the hybrid AlMCM-41/ZSM-5 material and for this purpose, variations in the synthesis time were carried out. These micro-mesoporous structures were

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Journal of Thermal Analysis and Calorimetry
Authors: Luiz K. C. de Souza, Juliana J. R. Pardauil, José R. Zamian, Geraldo N. da Rocha Filho, and Carlos E. F. da Costa

diffraction patterns of the AlMCM-41 and LaMCM-41 samples synthesized at room temperature are shown in Fig. 1 . In Fig. 1 , an intense peak is present in the 2 θ interval of 2–3°, which can be attributed to the plane reflection at (100). Additionally, three

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/mg. The supports of mesoporous molecular sieves (of SBA-15, AlSBA-15, or AlMCM-41 type) were synthesized [ 14 , 15 ] using known recipes. These materials were routinely characterized by X-ray diffraction, electron microscopy, nitrogen absorption, Fourier

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said to be satisfactory when those obtained with other catalysts are considered. Therefore, HT-823 can substitute most of the catalyst used in the benzoylation of BP with BOC. As stated in Table 4 , SO 4 -AlMCM-41 has higher conversion (~94%), but

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Journal of Thermal Analysis and Calorimetry
Authors: Késia K. V. Castro, Ana A. D. Paulino, Edjane F. B. Silva, Thiago Chellappa, Maria B. D. L. Lago, Valter J. Fernandes Jr., and Antonio S. Araujo

. 14. Souza , MJB , Silva , AOA , VJ Fernandes Jr , Araújo , AS . Acid properties of AlMCM-41 molecular sieves with different sílica-alumina ratios by thermogravimetry . J Therm Anal Calorim . 2005 ; 79 : 425 – 428

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