This work reports that the polyvinyl alcohol successfully templates the intracrystal mesoporous structure of hierarchical SAPO-11 molecular sieves. The structures of prepared hierarchical SAPO-11 materials and a conventional SAPO-11 simultaneously synthesized are characterized by X-ray diffraction. N _2 adsorption/desorption. scanning electron microscopy and high resolution transmissi... https://toyscyclers.shop/product-category/art-supplies/