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The nano-sized ZSM-5 catalysts were modified by surface coating with SiO 2 , P 2 O 5 , MgO and their combinations; the catalytic properties were investigated in the shape-selective methylation of toluene with methanol. The catalysts were characterized by XRD, XRF, N 2 adsorption–desorption, temperature programmed desorption of ammonia (NH 3 -TPD), Fourier-transform...
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