'Heterogeneous catalysis' presentation slideshows

CATALYSIS

CATALYSIS. Definition of catalysis. A substance which changes the speed of a reaction without being used itself is called a catalyst. The phenomenon of increasing the rate of reaction by the use of catalyst is called catalysis.

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Gold Catalysis

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Gold Catalysis

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Gold Catalysis

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Heterogeneous Catalysis Opportunities and challenges

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Heterogeneous Catalysis Opportunities and challenges

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CHBE 452 Lecture 27

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Reaction Kinetics of Soybean Oil Transesterification at High Temperature

Reaction Kinetics of Soybean Oil Transesterification at High Temperature. Present at AICHe Meeting Nov. 16, 2008. Shuli Yan, Manhoe Kim, Steve O. Salley, John Wilson, and K. Y. Simon Ng National Biofuels Energy Laboratory NextEnergy/Wayne State University Detroit, MI 48202. Outline.

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Lecture 23 Thursday 4/1/08 OCNB Explosion Noble Prize 2007 Catalytic Steps

Lecture 23 Thursday 4/1/08 OCNB Explosion Noble Prize 2007 Catalytic Steps. 400. Temperature o C. Cooling Restored. Q r = 0. Isothermal Operation. 200. 175. 9:55 t = 0. 10:40 10:50. midnight 12:18. Temperature-time trajectory. fuse. Catalysts and Catalysis.

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Chemisorption: Active Sites

Chemisorption: Active Sites. A chemical reaction takes place: chemical bonds are formed Driving force: minimisation of Gibbs Free Energy (50 - 400 kJ/mol). Characterisation of surfaces: Specific surface area of phases Types of active sites Number of active sites Reactivity of active sites

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Industrial catalysis

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Catalysis

Catalysis. Catalyst : A substance that speeds up a reaction without being consumed Enzyme : A large molecule (usually a protein) that catalyzes biological reactions. Homogeneous catalyst : Present in the same phase as the reacting molecules.

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Catalysis

Catalysis. Lowering of Activation Energy by a Catalyst. Catalysts Increase the Number of Effective Collisions. Heterogeneous Catalysis. Heterogeneous Catalysis. Heterogeneous Catalysis. Heterogeneous Catalysis.

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Catalyst

Catalyst. What is catalyst function?. Catalyst function is providing an alternative reaction pathway with lower activation energy so that more reaction particles possess necessary energy to react. Modes of action of homogenous catalysts.

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Contact Information

Contact Information. Mani Manivannan Energy System Dynamics Division Office of Research and Development National Energy Technology Laboratory Research Scientist (304) 285-2078 Ayyakkannu.Manivannan@netl.doe.gov David Tucker Energy System Dynamics Division

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