| abstract |
The present invention provides a kind of catalyst for treating waste gas and preparation method thereof and purposes, belongs to catalyst for treating waste gas technical field.Catalyst for treating waste gas of the invention includes alumina support and the active component that is carried on alumina support, wherein alumina support be include δ~Al 2 O 3 , θ~Al 2 O 3 With α~Al 2 O 3 In at least two crystal phases carrier, active component be lanthana and heteropoly acid.Alumina support of the invention includes the carrier of at least two crystal phases, and the alumina support of multiphase has bigger specific surface area compared to the alumina support of single crystal phase, load capacity of the active component on carrier thus can be improved；In addition, active component lanthana and heteropoly acid and alumina support collective effect, suitable for purifying vehicle exhaust, organic exhaust gas elimination and the purification of natural gas catalytic combustion exhaust gas or catalysis burning. |