关键词: 蔗糖水解, 阳离子交换树脂, 化学动力学, 实验教学

Abstract: The acid-catalyzed sucrose hydrolysis reaction serves as a fundamental kinetic experiment in physical chemistry curricula across universities. While sulfuric acid and hydrochloric acid are conventionally employed as catalysts, their strong acidity and corrosiveness pose safety hazards for operators, risk instrument corrosion, generate environmental pollution, and necessitate specialized waste disposal. To address these challenges, we implemented an environmentally friendly modification by replacing liquid strong acids with solid acid cation-exchange resins as catalysts. This innovative approach demonstrates comparable catalytic performance to conventional liquid acids, exhibiting distinct pseudo-first-order reaction kinetics while eliminating safety and environmental concerns. Experimental parameters including resin dosage, sucrose concentration, and reaction temperature were systematically optimized. The incorporation of custom-designed T-shaped polarimeter tubes and double-jacketed beakers significantly enhanced operational convenience for students. Furthermore, we developed a comprehensive ideological-political teaching framework centered on four core values: patriotic sentiment, dialectical thinking, scientific literacy, and environmental awareness. This pedagogical design aims to cultivate students’ critical thinking and ecological consciousness while fostering scientific patriotism, ultimately nurturing high-caliber talents with integrated research capabilities and social responsibility.

Key words: Sucrose hydrolysis, Cation-exchange resin, Chemical kinetics, Laboratory teaching