B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/53.B, 260/56
B01J 27/02 (2006.01) B01J 23/88 (2006.01) B01J 27/057 (2006.01)
Patent
CA 1080203
ABSTRACT OF THE DISCLOSURE A process for producing acrylonitrile by the vapor-phase catalytic ammoxidation of propylene, which comprises (I) reacting propylene, a molecular oxygen-containing gas and ammonia in the presence of a catalyst expressed by the following empirical formula FeaSbbMocMedTeeOfNagOh.(SiO)i wherein Me is at least one element selected from the group containing of V and W, C is at least one element selected from the group consisting of Cu, Mg, In and Ni, and the subscripts a, b, c, d, e, f, g, h and i each represents atomic rations such that when a-10; b-13 to 28; c-0.1 to 2.5; d-0.05 to 1; e-0.2 to 5; f-0 to 4 (in which case b-13 to 20), or f-2 to 6 (in which case b-20 to 28); g-0 to 3; h-the number of oxygens correspond- ing to the oxide formed by the combination of the components, and i-25 to 200; in a fluidized bed catalytic reaction zone at a temperature of about 380 to about 500°C and a pressure of about 0.2 to about 3 kg/cm2-G while adjusting the propylene/oxygen/ammonia molar ratio to about 1:about 1:about 0.8 to about 1:about 4:about 3; (II) the catalyst being prepared by (I) intimately mixing starting materials for the Fe, Mo, Me, Te and O components in a form soluble in water or nitric acid, a starting material for the Sb component, and silica sol which may or may not contain an Na component, thereby to form a slurry containing these components and having a non-volatile solids content of about 10 to about 50% by weight; Abstract continued: (2) so that the composition of the final catalyst is within the range expressed by the empirical formula above; (3) spray-drying the resulting slurry, and (4) calcining the resulting spray-dried particles at a temperature of about 600 to about 950°C thereby to form a catalyst with a composition within the above empirical formula and with all of the Mo, Me, and Te components substantially dissolved in an iron/antimony oxide compound (FeSbO4) in the form of a solid solution.
276333
Moriya Kiyoshi
Nakamura Tomio
Nakamura Yoshimi
Saito Shigeru
Sasaki Yutaka
Na
Nitto Chemical Industry Co.
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