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Effect of integration manner on the catalytic behaviors of the composite catalysts containing Zr–Zn (Zr/Zn = 2 : 1) oxide and SAPO-34 (24 h). (a) Dual-bed configuration. (b) Stacking of granules with sizes in the range of 250–600 μm. (c) Simple mixing of the two components in an agate mortar. (d) Ball-milling of the components together for 24 h. o/p ratio denotes the C2–C4 olefin/paraffin ratio. Reprinted with permission from ref. [99].
