Joule heat method and device for efficiently catalyzing combustion of low-concentration methane by niobium-doped tin oxide and preparation method

Abstract

The invention discloses a Joule heat method and device for efficiently catalyzing combustion of low-concentration methane through niobium-doped tin oxide and a preparation method. The problem that at present, efficient combustion of methane is difficult to achieve at a low temperature is mainly solved. The invention provides a Joule heat method and a Joule heat device for efficiently catalyzing low-concentration methane combustion by niobium-doped tin oxide, which are characterized in that the bed temperature of a niobium-doped tin oxide conductive ceramic catalyst is regulated and controlled by controlling the output power of a direct-current power supply by utilizing Joule heat generated when current passes through the conductive ceramic catalyst niobium-doped tin oxide. Under the conditions of no external heating device and no additional introduction of a conductive auxiliary agent, Joule heat generated when current passes through the conductive material is used for directly promoting combustion of methane, efficient catalysis of methane combustion is achieved, the catalytic activity of non-noble metal is greatly improved, energy loss and utilization efficiency can be reduced, and wide application prospects are achieved.

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