The article proposes a novel and eco-friendly method for synthesizing SAPO-11 in ethylene glycol (EG) and supercritical carbon dioxide (ScCO₂). The method incorporates ScCO₂ into EG to decrease the solubility of SAPO-11 precursors in EG and thereby forms a highly supersaturated solution of SAPO-11 precursors. The as-synthesized SAPO-11 possesses smaller particles, a larger external surface area, and a larger number of acid sites than the SAPO-11 synthesized in EG and the SAPO-11 synthesized in water and ScCO₂, respectively. These advantages of the as-synthesized SAPO-11 endow the corresponding catalyst with superior dibranched isomer selectivity and low cracking selectivity during 1-octene hydro isomerization.

本文提出了一种在乙二醇（EG）和超临界二氧化碳（ScCO ₂）中合成SAPO-11的新颖且环保的方法。该方法将ScCO ₂掺入EG中，以降低SAPO-11前体在EG中的溶解度，从而形成SAPO-11前体的高度过饱和溶液。与分别在EG中合成的SAPO-11和在水和ScCO _2中合成的SAPO-11相比，合成后的SAPO-11具有更小的颗粒，更大的外表面积和更大的酸位。合成后的SAPO-11的这些优点使相应的催化剂在1-辛烯加氢异构化过程中具有出色的双支链异构体选择性和低裂化选择性。