Some Applications of Supported Nanoparticles Modified by Organometallics

Some Applications of Supported Nanoparticles Modified by Organometallics 

It is not the subject of this chapter to cover all domains of the catalytic properties of nanoparticles modified by organometallics. In particular, we will not cover the work of Bormeman on metallic particles have been modified by organoaluminum compounds. 

In the very active field of unmodified nanoparticles recent discoveries have been made on size-selective Fischer-Tropsch catalysts that convert selectively CO and H2 into hydrocarbons there is a strong dependence of activity, selectivity and Hfetime on Co particle size. This topic of unmodified, supported or unsupported, nanoparticles is outside the scope of this chapter [74, 75]. Nevertheless, we mention discoveries made by Degussa, who have patented a process for H2O2 synthesis from molecular oxygen and molecular hydrogen with nanosized Pd particles (6 A) [76]. 

We summarize here only the laboratory results obtained in this area of supported or unsupported nanoparticles modified by organometallic compounds. We 

As seen previously, after reaction (under gaseous or adsorbed hydrogen) of an M R4 organometallic compound (group 14) with the surface of the host metal ( Ms ) various species, Ms[M R ]y, are formed. Depending on % and y and the treatment temperature, these species can be divided in three main groups  

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Some Applications of Supported Nanoparticles Modified by Organometallics I 593... 

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