Abstract
Lamellar SAPO-18/34 intergrowth zeolite has been successfully synthesized by solvent-free method employing N,N-diisopropylethylamine and tetraethylammonium hydroxide as co-template. Different framework structures (SAPO-34 or SAPO-18) could also be crystallized from identical gels under the guidance of a single template agent. The differences in structure, morphology, pore characteristics, chemical composition, and acidity of the prepared zeolite SAPO samples were investigated by XRD, SEM, N2 adsorption–desorption, XRF, and NH3-TPD. In comparison to SAPO-18 and SAPO-34, the lamellar SAPO-18/34 intergrowth zeolite with suitable acidity exhibited better catalytic conversion and enhanced catalytic stability in the cracking of 1-butene.
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