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Milling machine with 2V1500AH lead-acid battery technology data

Return Listsource:Gratene date: 2022-06-17

Milling machine with 2V1500AH lead-acid battery technology dataProfessor J. Am. Chem. SOC .: Control of Organic Molecular Membrane Metal Catalysts for CO2 Reduction

By reacting CO2 transformation by countercurrent gas transform (RWGS), it is an important raw material for many important industrial processes (such as Fei Top), which can reduce CO2 emissions, replacing the fossil fuel to achieve sustained carbon cycle. For RWGS conversion CO2 reactions under normal pressure, * Universally mechanism is adsorption and activation of CO2 on the load type catalyst metal / oxide interface, then hydrogenation and / or dissociate form chemical adsorption CO, and then the desirable formation Products, or further hydrogenation formation CH4.

However, the combination of these critical surface species is also very challenging at the same time. In order to efficiently prepare COs in moderate conditions, the researchers use a variety of strategies to prepare multifunctional catalysts and / or control the size of the load metal cluster, and can even control the atomic dispersion level. However, in many cases, the above method requires a complex or expensive catalyst synthesis step.

In this article, the University of Colorado J. Will Medlin proposes a new method, by depositing an organic monolayer film on a catalyst carrier, using a single self-assembly step by using a single self-assembly step to control the CO2 adsorption and CO desorption of the load metal catalyst. The combination of the phosphonic acid monomolecular film on the load type PT and PD catalyst can be reduced by the support of the Carrier effect. Although CO adsorption is usually accompanied by CO2 adsorption and activity, it can restore strong CO2 adsorption and hydrogenation activity by controlling the introduction of alkaline amine function on the modified film. Therefore, both surface and spatial interactions can be controlled by the design of organic modifiers, and after surface modification, the catalyst selectivity (99% of conversion is close to 50%) and a common rate are significantly improved. In addition, the inactivation rate of the catalyst is also significantly reduced. 

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