Development and use of the structured catalysts and reactors(SCRs)is a promising strategy to overcome the major drawbacks encountered in the traditional packed-bed reactor due to improved hydrodynamics in the combination with enhanced heat/mass transfer,thus being a hot topic in the heterogeneous catalysis.One of the most typical SCRs is the ceramic honeycomb catalyst extensively applied in the control of automotive emissions and the reduction of nitrogen oxides from power stations.Such honeycomb Development and use of the structured catalysts and reactors (SCRs) is a promising strategy to overcome the major drawbacks encountered in the packed-bed reactor due to improved hydrodynamics in the combination with enhanced heat / mass transfer, thus being a hot topic in the heterogeneous catalysis. Of the most typical SCRs is the ceramic honeycomb catalyst extensively applied in the control of automotive emissions and the reduction of nitrogen oxides from power stations.