Preparation of Mesoporous Aluminosilicates with Decreased Dosage of Organic Template and Water: Insights into the HLB Effect of the Cotemplate

• Published in: Industrial & engineering chemistry research Vol. 61; no. 43; pp. 15796 - 15802
• Main Authors: Li, Yunchuang, Xi, Yanan, Gao, Xiaohan, Xie, Fangming, Liu, Honghai, Gao, Xionghou, Liu, Hongtao
• Format: Journal Article
• Language: English
• Published: American Chemical Society 19.10.2022
• Subjects: Applied Chemistry
• ISSN: 0888-5885; 1520-5045
• DOI: 10.1021/acs.iecr.2c02609

Mesoporous aluminosilicates (MAs) with high hydrothermal stability had been synthesized via assembly of typical microporous zeolite Y precursors. However, the high consumption amount of the P123 template and water is still an obstacle to its industrial application. Synthesis of hydrothermally stable mesoporous aluminosilicates (MAs) in a high-concentration-template solution is a promising strategy to decrease the consumption amount of organic template and water. A means to prevent the clumping of micelles in the high-concentration system is of vital importance in the synthesis of MAs. In the present investigation, the goal was achieved by the introduction of a cotemplate with a high hydrophilic–lipophilic balance (HLB) value into F68 micelles. The effect of a cotemplate with different HLBs on the physicochemical properties of MA products was investigated. Compared with cotemplate sodium dodecyl dimethylbenzene sulfonate (SDMBS) of HLB 9.7 and fatty alcohol polyoxyethylene ether-9 (AEO-9) of HLB 13.5, octyl phenol polyoxyethylene ether-10 (OP-10) of HLB 14.1 favored the formation of well-crystallized MAs with maximum integrated intensity, surface area, and hydrothermal stability. The improvement of physicochemical properties could be attributed to the increase in overall hydrophilicity of composite micelles. As a result of this, well-ordered MAs were obtained with greatly decreased consumption of F68 and water.