Solvent-Free Synthesis of 1D Cancrinite Zeolite for Unexpectedly Improved Gasoline Selectivity

摘要

Zeolites as a kind of representative solid acid material, owning unique microporous channels, could be proposed as reasonable candidate muti-funcational catalysts on oriented synthesis of target products from syngas. This paper represents a novel way for the synthesis of cancrinite zeolite (CAN-topology) using a solvent-free strategy. Thus prepared CAN zeolite loaded Cobased catalyst exhibited a remarkable catalytic performance for direct gasoline synthesis from syngas, producing unexpected gasoline selectivity with 78.3%. The amazing result was attributed to CAN zeolite with a straight channel (12MR, 1- dimension), leading that Fischer-Tropsch primary products could continuously and quickly diffuse in its channels. Moreover, a lack of shape selective behavior and weak acidity on CAN zeolite exhibited low isoparaffin selectivity. The Na~+ content in CAN zeolite was also an important factor for tuning the product distribution. As expected, the green and facile solvent-free approach for constructed CAN zeolite will play a vital application in selective conversion of syngas in the future.