Effects of arsenic oxide (As2O3) on the phase composition of vanadium pentoxide-molybdenum trioxide-titanium dioxide (anatase) DeNOx catalysts

In this paper, the effects of As{sub 2}O{sub 3} on the phase composition of V{sub 2}O{sub 5}-MoO{sub 3} and V{sub 2}O{sub 5}-MoO{sub 3}-TiO{sub 2} (anatase) are investigated by X-ray diffraction and discussed in terms of phase transformation V{sub 9}Mo{sub 6}O{sub 40} {yields} V{sub 6}Mo{sub 4}O{sub 25}.