SBA-15, a mesoporous silica, was employed to systematically study the influence of water concentration during amine grafting and also on amine loading. It was found that water as opposed to alcohol was a more effective agent for influencing amine loading. The addition of alcohol did not result in higher amine loadings; however, the addition of water leads to higher amine loading. Under the reported synthesis conditions, further increase in water concentration resulted in further increase in amine loading without plateauing. Additionally, increasing the aminosilane content beyond 2 mL/g (SiO₂) during amine grafting did not yield higher amine loading. Moreover, the mere presence of water during grafting affects the grafting rate of the aminosilanes, resulting in complete grafting of amines to supports in 30 min. The stability of wet grafted materials and the universality of the studied effects for other aminosilanes and mesoporous silica supports (KIT-6 and MCM-48) were also demonstrated.

SBA-15是一种介孔二氧化硅，用于系统研究胺接枝过程中水浓度的影响以及对胺负载量的影响。已经发现，与醇相反，水是影响胺负载量的更有效的试剂。酒精的添加不会导致更高的胺负载量。然而，添加水导致更高的胺负载量。在报道的合成条件下，水浓度的进一步增加导致胺负载量的进一步增加而没有稳定。此外，将氨基硅烷含量增加到超过2 mL / g（SiO ₂）在胺接枝过程中没有产生更高的胺负载量。此外，接枝过程中仅水的存在会影响氨基硅烷的接枝率，从而导致胺在30分钟内完全接枝到载体上。还证明了湿接枝材料的稳定性以及对其他氨基硅烷和介孔二氧化硅载体（KIT-6和MCM-48）的研究效果的普遍性。