Promising Strategies

Advanced unit operations such as micromixing could help to gain more constant precipitating conditions. The precipitation of large quantities of materials is an ill-defined process the chemical potentials of the reagents are neither spatially nor temporally constant, when a drop of the precipitating agent is added to the reactor, in which precipitate and dissolved ions already 

Different preparation methods and preparation conditions as well as pretreatment conditions lead to remarkable effects on the structure of the catalyst, which influence the catalytic performance. The coprecipitation methods implicate high flexibility, but entail high complexity. So, not only chemical composition, but also the preparation parameters and activation conditions determine the resulting properties of the final catalyst, which makes reproducible preparation difficult, especially when different phases are present. 

There is no single criterion to predict high activity. The catalytic properties of the final catalyst are governed by the following three key criteria  

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Nevertheless, there are promising strategies which may help to overcome these problems, for example, the use of less basic organometallics and/or the activation of the C-N double bond by Lewis acids. Therefore, it is not particularly surprising that the number of publications dealing with the stereochemical aspects of these reactions increases continuously. 

Giudice, A. and M. Montella. 2006. Activation of the Nrf2-ARE signaling pathway a promising strategy in cancer prevention. Bioessays 28(2) 169-181. 

The use of click chemistry is a promising strategy as a postsynthetic ligation for nucleic acids in order to circumvent the time-consuming synthesis of phosphoramidites as DNA building blocks [31, 32]. This is particularly relevant for several fluorophores that are unstable under the acidic, oxidative, or basic conditions of automated DNA phosphoramidite chemistry and DNA workup. 

Therefore, data on these compounds are difficult to summarize. Since certain five- and six-membered nitronates are easily assembled from simple molecules, some of the transformations considered in this section can be used for the development of new promising strategies for organic synthesis. 

Several workers recommended a promising strategy by boosting the bioremediation of contaminated soil with cheap biomass products such as alfalfa, sawdust, chopped potato waste, apple pomace, cow and chicken manure, straw, or molasses in compost systems [215, 415-417]. These applications have led to transformations of TNT of more than 95% [414,415, 417] and were often accompanied by detoxification effects [414,418]. 

Nonadiabatic ab initio molecular dynamics methods are one of the few promising strategies to explore excited-state potential-energy surfaces of multidimensional system in an unbiased manner. 

A promising strategy towards stable and catalyticaUy active metal colloids is their preparation inside the core of micelles formed by amphiphilic block copolymers. This strategy offers a number of advantages (i) micelles represent a nano-structured environment which can be exactly tailored by block copolymer synthesis (ii) polymers act as effective steric stabilizer ]36] (iii) metal leaching might be avoided (iv) micelles allow control over particle size, size distribution and particle solubility [37] and (v) micelles are also supposed to effect catalytic activity and selectivity [38]. 

Chemical hydrogen storage-where hydrogen is stored in a chemical compound and released via a reversible chemical reaction-represents a promising strategy [36]. Ammonia borane (H3NBH3) and related aminoborane compounds have... 

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