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  • Why does platinum metal make a good catalytic surface for reactant . . .
    Platinum metal is an excellent catalytic surface because it holds reactant molecules in optimal positions for reactions to occur, thereby increasing the reaction rate Catalysts speed up reactions without being consumed and can significantly lower activation energy
  • Catalysts Flashcards - Quizlet
    Why does platinum metal make a good catalytic surface for reactant molecules? It holds reactant molecules in a good position for them to react Which reaction is an example of heterogeneous catalysis? Ethene gas reacts with hydrogen gas by using a nickel catalyst
  • What makes platinum so good as a catalyst for fuel cells?
    For both the anode and the cathode reactions in a fuel cell, platinum is a good catalyst because it falls near the peak of the volcano plot That is, it has a good balance between favorable adsorption and favorable desorption for hydrogen, oxygen, and water
  • Solved: Why does platinum metal make a good catalytic surface for . . .
    The metal probably increases reaction rate by either holding reactant molecules in the correct orientation to react or by weakening or breaking bonds in reactant molecules to make them more reactive This is an example of heterogeneous catalysis
  • Platinum group metals: Why are platinum and palladium great catalysts . . .
    The reactants do temporarily weakly bond to the platinum atom until the other reactant finds the reactant through normal thermal motion and grabs the matching reactant away in a stronger bond leaving the platinum un-bonded
  • Platinum Catalyst - an overview | ScienceDirect Topics
    Platinum is an excellent catalyst for the electrochemical reaction in fuel cell but very costly Recent research shows that palladium and several other non Pt catalyst are potential for DEFC This paper presents different types of catalysts in DEFC and highlights the problems in the field
  • Solved 9. Why a rough surface piece of platinum metal acts - Chegg
    Since a rough surface of the platinum metal has cavities, it allows for more adsorption sites for reactants, making it more efficient in facilitating the reactions in comparison to a smooth surface
  • Catalyst Quiz | Quizlet
    Why does platinum metal make a good catalytic surface for reactant molecules? Hydrogen gas reacts rapidly with oxygen gas in the presence of a platinum catalyst Which equation correctly represents this reaction? it lowers the Activation energy that is needed
  • For platinum catalysts, smaller may be better - Berkeley Lab
    Berkeley Lab researchers studied platinum catalysts at the atomic scale under actual industrial reaction conditions and discovered why nanoparticle clusters of platinum potentially can out-perform the single crystals of platinum now used in fuel cells and catalytic converters
  • hydrogen - Why is platinum used as a catalyst in fuel cell electrodes . . .
    Hydrogen gas (H2) adsorbs ("sticks") to platinum metal, which causes the H-H bond to break as two H-Pt bonds form This makes it easier to remove an electron from each H atom, generating two H+ from H2 The thing that makes platinum such a good catalyst for this process is that it binds hydrogen gas strongly enough, but not too strongly Metals





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