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The interaction of acetylene with Cu + ions in zeolites CuX, CuY, CuZSM-5 and CuMCM-41 was studied by IR spectroscopy. The CC bond was strongly activated, what resulted in a distinct weakening of the triple bond and of CH bond (Δν CC =156–168cm −1 , Δν CH =93–122cm −1 ). The ability of Cu + ions to activate acetylene molecule increases in the order:...
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