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Study on the catalytic synthesis of 1,3-dioxolane using mesoporous aluminum phosphate
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J
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汪
DOI：10.1007/s11164-026-06071-3.png)
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Abstract
En 中文
A series of aluminum phosphate catalysts (xP-Al-O-T) with varying P/Al molar ratios and calcination temperatures were prepared via solvent evaporation self-assembly. The physicochemical properties of the prepared xP-Al-O-T catalysts were investigated using XRD, FTIR, Py-FTIR, nitrogen adsorption–desorption, and NH3-TPD. Results indicate that the xP-Al-O-T samples exist in crystalline form, with a predominantly weak Lewis acid surface. The performance of the catalysts in the formaldehyde–glycol acetalization reaction for 1,3-dioxolane synthesis was investigated. The effects of P/Al molar ratio and calcination temperature on catalyst activity were examined. The effects of reaction temperature, reactant molar ratio, and space velocity on catalytic performance were systematically investigated. Under the optimized conditions—a P/Al molar ratio of 1.50, calcination temperature of 550 °C, reaction temperature of 150 °C, reactant molar ratio of 1.1, and space velocity of 1 mL g⁻1 h⁻1—the conversion of ethylene glycol reached 95.52%, with a selectivity of 99.50% toward 1,3-dioxolane. Moreover, during a 200-h stability test, the catalyst exhibited no significant loss in activity, and the selectivity for 1,3-dioxolane remained largely unchanged, indicating excellent long-term catalytic stability.
Keywords:
1,3-dioxolane
Aldol reaction
Solvent evaporation self-assembly
Aluminum phosphate catalyst
Mesoporous material
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634
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