Absorption Ability of Different M/G Values of Alginate Fiber

不同的钠 alginate 的 M/G 价值借助于 1H-NMR 被学习。alginate 纤维经由湿旋转的技术被准备。M/G， sodium-alginate 的集中，凝结洗澡的集中和 alginate 纤维的吸收性的能力上的凝结的时间的效果被讨论。结果证明不同物质的吸收性的能力在如此的顺序变化：生理盐 > 血 > 自来水 > 提取的水。alginate 纤维的吸收性的能力随 M/G 价值的增加和 sodium-aiginate 的集中增加。逐渐地增加凝结洗澡的 conceatration，它增加直到集中直到 5% 。然而，它与持续减少使时间凝结。

One-Pot Synthesis of Dimethyl Carbonate over Basic Zeolite Catalysts

One-pot synthesis of dimethyl carbonate (DMC) from methanol, propylene oxide (PO) and carbon dioxide has been investigated using the basic zeolites as catalysts. Among the zeolites studied, Beta showed the best catalytic performance for DMC production. That the desilication of zeolite structure resulted in a hierarchical porosity of Beta, leading to more amount of KOH can be loaded on the surface of zeolite and therefore enhancing the base strength of the catalyst was proposed to be the reason for improved catalytic performance.