Homogeneous, heterogeneous, and enzymatic catalysis

Magnetically Separable Base Catalysts: Heterogeneous Catalysis vs. Quasi-Homogeneous Catalysis

The synthesis of magnetically separable quasi-homogeneous base catalyst and heterogeneous base catalyst is described. The quasi-homogeneous catalyst is achieved by supporting silane monomers functionalized with different amine groups directly on the surface of magnetite nanoparticles. The heterogeneous catalyst is prepared via a sol-gel process in which silane monomers containing different amin...

Homogeneous Catalysis Homogeneous Catalysis

A conceptual translation of homogeneous catalysis into heterogeneous catalysis: homogeneous-like heterogeneous gold nanoparticle catalyst induced by ceria supporter.

Translation of homogeneous catalysis into heterogeneous catalysis is a promising solution to green and sustainable development in chemical industry. For this purpose, noble metal nanoparticles represent a new frontier in catalytic transformations. Many challenges remain for researchers to transform noble metal nanoparticles of heterogeneous catalytic active sites into ionic species of homogeneo...

High temperature catalysis: role of heterogeneous, homogeneous, and radical chemistry

Selectivity and conversion in high-temperature catalysis is shown to often be the result of complex interactions of heterogeneous, homogeneous, and radical chemistry coupled with mass and heat transfer. The fundamental aspects as well as several applications of high-temperature catalysis are discussed in the light of these interactions. Applications cover synthesis of basic chemicals and hydrog...

Binding Energy and Enzymatic Catalysis

For nearly 100 years, the extraordinary catalytic power of enzymes has fascinated biochemists (1). In a recent article in this Journal, Splittgerber (2) analyzed several ofthe factors by which enzymes are thought to effect catalysis, including proximity and orientation effects, substrate strain, acidbase catalysis, and nucleophilic catalysis. Here we will discuss the fundamental role that the f...