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A layered mesoporous SAPO-34 with particle size of about 20μm was synthesized by using as-synthesized SBA-15 as silica source. For comparison, another three synthesis system were adopted to form SAPO-34 by using stoichiometric equivalence of calcined SBA-15, physical mixture of calcined SBA-15 and P123, and physical mixture of colloidal silica and P123 as initial reactants, respectively. The result...
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