Zhang Hongkui, Lu Yuting, Wang Yuanhao, Zhang Xingrong, Wang Tingyu
Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University Dalian 116023 China
State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining and Metallurgy Beijing 102600 China
RSC Adv. 2018 Feb 1;8(10):5608-5613. doi: 10.1039/c7ra12490b. eCollection 2018 Jan 29.
A glucose-based solid acid catalyst (GSA) was synthesized by hydrothermal carbonization and its physicochemical properties were explored by various characterization techniques including IR, TG and SEM. In addition, its catalytic performance towards d-glucosamine formation from the hydrolysis of chitosan was extensively investigated to determine the effects of reaction parameters, such as reaction temperature, time and mass ratio of catalyst and reactants. The experimental results revealed that the yield of targeted product d-glucosamine could reach as high as 98.1% under optimal conditions (temperature: 110 °C; time: 6 h). After six catalytic cycles, no evident deactivation was observed, suggesting the satisfactory stability of the investigated solid acid catalyst. This might provide insight on the development of suitable catalyst systems for d-glucosamine formation to replace homogeneous catalysts.
通过水热碳化合成了一种基于葡萄糖的固体酸催化剂（GSA），并采用包括红外光谱（IR）、热重分析（TG）和扫描电子显微镜（SEM）在内的各种表征技术对其物理化学性质进行了探索。此外，还广泛研究了其对壳聚糖水解生成d - 葡萄糖胺的催化性能，以确定反应参数的影响，如反应温度、时间以及催化剂与反应物的质量比。实验结果表明，在最佳条件下（温度：110℃；时间：6小时），目标产物d - 葡萄糖胺的产率可高达98.1%。经过六个催化循环后，未观察到明显的失活现象，这表明所研究的固体酸催化剂具有令人满意的稳定性。这可能为开发用于生成d - 葡萄糖胺的合适催化剂体系以替代均相催化剂提供思路。
