The V

2

O

5

-WO

3

-MoO

3

/TiO

2

honeycomb catalyst was prepared with industrial grade chemicals. The structural and physico-chemical properties were analyzed with X-ray diffraction (XRD)

scanning electron micrograph (SEM) and mercury porosimetry. The NO

x

conversion and durability were investigated on a pilot plant test set under the actual operational conditions of a coal fired boiler. The catalyst monolith had good formability with mass percentage of V:W:Mo:TiO

2

:fiber glass 1: 4.5:4.5:72:18. Vanadium

tungsten and molybdenum species were highly dispersed on anatase TiO

2

without causing the transformation of anatase TiO

2

to rutile by calcining under a current of air at 450 °C for 4.5 h

but there were some degrees of crystal distortion. The catalyst particle sizes were almost uniform with close pile-up and the pore structure was regular with complete macro-pore formation and large specific surface area. The NO

x

conversion was sensitive to temperature but nearly insensitive to NH

3

. The catalyst showed strong adaptability to NO

x

concentration with

activity above 80% in the range of 615-1640 mg·m

-3

. Within the range of 720-8640 h continuous operation

the NO

x

conversion dropped at a rate of about 1% reduction per 600 h.