《Table 1 Pore structure parameters of different samples》

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《Synthesis of Core-Shell HZSM-5@SBA-15 Composite and Its Performance in the Conversion of Methanol to Aromatics》

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In order to further clarify the pore structure，TEM of HZSM-5@SBA-15 is presented in Figure 3 at different magnification.The particles in Figure 3a were further magnified in Figure 3b，with the micro-mesoporous coreshell composite using HZSM-5 as the core and SBA-15as the shell being presented in Figure 3b.In order to observe the mesoporous structure of the shell in detail，the typical regions were magnified and circled with rectangular border in the figure.The hexagonal arranged uniform mesopores of the shell are the same as expected indeed.The N2 adsorption–desorption isotherms of the samples are displayed in Figure 4 and their textural properties are summarized in Table 1.In Figure 4a，HZSM-5 exhibits a type I isotherm，indicating to a characteristic micropore framework.SBA-15 displays the type IV adsorption and desorption isotherms which are related to capillary condensation.The distinct hysteresis loop of type H1 in the p/p0 range of 0.4―1.0 can illustrate the straight cylindrical mesoporous structure in SBA-15[22].As for HZSM-5@SBA-15，the isotherm still belongs to type IV with H1hysteresis loop，however，the slope of the isotherm is not so high as SBA-15 owing to the decrease of the order degree after its combination with HZSM-5.Compared with HZSM-5@SBA-15，HZSM-5@Si O2 also has the isotherm of type IV，nevertheless the hysteresis loop is not so obvious，and it can be classified as type H3，while the corresponding pore structure is composed of the slit mesopores or accumulated mesopores in the sample.