▎ 摘　　要

NOVELTY - Catalyst composition comprises conductive component, active component, cocatalyst and carrier. USE - Used as catalyst composition. ADVANTAGE - The catalyst composition: can solves the technical problem of how to regenerate the low-temperature SCR catalyst in situ after being poisoned, and the low-temperature SCR catalyst has good low-temperature denitration activity, after in-situ regeneration, whose low-temperature denitration activity is not attenuated, thus is more suitable for practical use. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the SCR catalyst, comprising mixing the catalyst composition, refining mud, aging, extruding, drying, calcining and cutting; (2) SCR catalyst, is prepared by the method, whose resistivity is 1-50 ~Rasteriskm; (3) in-situ regeneration catalyst, comprising catalyst, and SCR catalyst, and conductive adhesive coated on two ends of the catalyst, the catalyst coated with the conductive adhesive is assembled as a catalyst module, and electrode is set on the conductive adhesive at two ends of the catalyst module; (4) preparing in-situ regenerated catalyst, comprising (a) coating conductive adhesive at two ends of the SCR catalyst, (b) assembling the SCR catalyst coated with the conductive adhesive as catalyst module, and (c) setting an electrode on the conductive adhesive of the catalyst module; and (5) regenerating in-situ regenerationcatalyst, comprising using SCR catalyst, where the in-situ regeneration of the SCR catalyst, applying voltage on the two electrodes, decomposing the ammonium bisulfate covering the catalyst by electric heating effect.