Catalyst is still a problem
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Hello everyone, what is the real role of zinc oxide and aluminum oxide in the use of copper-based catalysts? Is it copper alone or cuprous ions that play the catalytic role? What are the proportions of Nanhua's c307 catalyst?
1. Alumina is a porous, highly dispersed material with a large specific surface area. Alumina is the carrier of the catalyst, providing a structure for the uniform distribution of copper ions, so that the copper ions have sufficient reaction contact surface "specific surface"! 2. After zinc oxide is reduced by copper oxide, ZnO crystal grains are evenly distributed between copper crystallites, playing the role of spacing, stabilizing, and carrying copper grains. 3. Both Cu+ and Cu0 act as catalysts, but over-reduced Cu0 ions are more likely to sinter. Therefore, during the reduction process, it is best to have more than 3% CO2 in the reduction process to prevent CuO from being over-reduced to Cu0.
Thank you, what is the proportion of each substance?