Hierarchical products material design

Hierarchical porous materials are sohds that are ordered at different length scales. Materials with multiple porosities are of high interest for apphcations in catalysis and separation, because these apphcations can take advantages of different pore structures. For example, microporous mesoporous composites have shown superior catalytic activities by the combination of strong acidity from zeohtes with high reactant or product mobility due to large uniform mesopores. Several approaches have been reported on the design and synthesis of hierarchical porous materials, as discussed below. 

The designation output is very heterogeneous. Business output is the result of a production process, in the most general sense of the word. Output can be physical (material output) or nonphysical (services). Whereas material output is easily defined, such as by the delivery of material, manufactured parts, or even the finished product, the term services is more difficult to define because it comprises heterogeneous services, such as insurance services, financial services, and information brokering services. Figure 6 illustrates this simplified classification of output —that is, also input —as a hierarchical diagram. 

---