Exhaust gas catalyst
A technology of catalysts and hydroxides, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., which can solve the problems of developing stable catalysts without durability
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[0037] The present invention is described in more detail in the following preferred embodiments.
[0038] The catalyst according to the invention is obtained starting from the following two support materials, namely the composition 81% TiO 2 -9% WO 3 -10% SiO2 2 (Ti / W / Si) and composition 90% TiO 2 -10% WO 3 (Ti / W). A combination of V and RE elements is added to this support to provide NO represented by the general formula REVO / Ti-W-Si x Reduction catalysts where RE=Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Er and Yb. The content range of the active phase is at most 5.1wt% RE element, 0.4-2.1wt% vanadium and at most 2.7wt% oxygen, which is equivalent to 2.5-8.5wt% REVO dosage.
[0039] 1. According to the preparation of the catalyst of the present invention, containing 5.0wt% Er and 1.5wt% V, loaded on the Ti-W-Si carrier
[0040] 1.1 Preparation of Ti-W-Si support
[0041] Carrier preparation is carried out according to (7): 92.68g titanium tetrachloride (TiCl 4 ) was added drop...
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