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N&N

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Federico Garza de León

on 3 March 2010

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Transcript of N&N

CHALMERS UNIVERSITY OF TECHNOLOGY Nanotechnology for Sustainable Energy Federico Garza de Leon
Hector Hugo Perez Garza N&N FOR INCREASED ENERGY EFFICIENCY IN INDUSTRIAL CATALYTIC PROCESSES Main Goals Energy efficiency
Research

Faster procedures
Cheaper
Less energy input


-decreasing activation barriers
-increasing reaction rates
What is a catalyst? Makes or helps a reaction take place
Enhances the rate of reaction without being consumed or modified
Is selective -efficient
-less misuse How does it work? Alternative reaction pathway
Lower activation energy

Two types:
-reaction rate increased -heterogeneous
-homogeneous Nanocatalysis
New methods and opportunities
Focus on heterogeneous catalysts

-100% selectivity
-extremely high activity
-low energy consumption
-long life time Controlling size
and shape

Electronic Structure

Thermal and Chemical Satbility Increase Efficiency Limitations Monitoring and controlling

Disadvantages in catalytic sensors

-large number of variables = large number of sensors





-Span loss
-Can be poisoned
-small signal-to-noise ratio
-permanent damage from gases Contributions of N&N Transition metal oxide ultr-thin films
New sensors Surface Area Effect of surface area on reaction rates
Contributions of N&N
Environment, Economics & Politics Research Nanocatalysis
Metallic nanoparticles & compounds
Full transcript