《Table 1 Data for characterization of different samples.》

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《Fabrication of the Core-Shell Structured ZSM-5@Mg(Al)O and Its Catalytic Application in Propane Dehydrogenation》

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The data for characterization of different samples are listed in Table 1.As it can be seen that the surface areas of Z@MA-x were greatly decreased as compared with ZSM-5.This phenomenon could be related to the low surface area of Mg Al2O4 in the material.It should be noted that when the Mg（Al）O/ZSM-5 ratio reached up to5，the surface area of Z@MA-5 was reduced significantly to 238 m2/g in distinct contrast with that of Z@MA-1and [email protected] phenomenon could be attributed to the high content of Mg（Al）O shell，which would lead to the pore channel block to some extent in the [email protected]，in particular，by the formation of coreshell structure，the Sext of Z@MA-x was significantly increased as compared with that of the pristine ZSM-5，especially for the case of Z@MA-3（209 m2/g）.This apparent improvement of structural properties in Z@MA-3 would be propitious to the dispersion of the metals on the support.Based on this good behavior，it is suggested that Z@MA-3 would show a great potential as a catalyst support.