The addition of 30 % bonding agent Al2O3 can not decrease the catalytic activity of the bonded H β - zeolite catalyst. 填加30%的氧化铝粘结剂对Hβ沸石的催化活性没有影响。
The study of solid supported organometallic catalyst by chemical bonding & ⅱ. the synthesis and hydroformylation activity of silica supported rhodium-phosphine catalyst 化学键联固相化催化剂的研究Ⅱ.硅胶担载铑-膦系催化剂的合成和醛化活性
Cation with larger radius can enhance the covalent component of non-bridging oxygen bonding which is the key point for increasing Raman optical activity as confirmed by electron structure calculation. 电子结构的计算同时表明,半径较大的阳离子可以提升非桥氧键的共价性成分,从而导致更大的拉曼散射截面。
Protein is the basis of life, which is a kind of non-periodical polymer. The interactions inside and outside protein such as hydrogen bonding, van der Waals force, disulfide bonds, electrostatic and hydrophobic interactions are very important to maintain the native structure and physiological activity. 蛋白质是生命的物质基础,它是一种非周期性的聚合物,分子内通过静电、疏水相互作用以及氢键、范德华力、二硫键等维持天然结构,保持生理活性。