Catalyst for producing acrylonitrile and process for...

Details Catalyst for producing acrylonitrile and process for... Catalyst for producing acrylonitrile and process for...

2009-02-26

2011-10-11

Saeed, Kamal (Department: 1626)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Phosphorus or compound containing same

C502S248000, C502S249000

Reexamination Certificate

active

08034737

ABSTRACT:
A catalyst for producing acrylonitrile capable of maintaining a high yield of acrylonitrile for a long time is provided. The catalyst has a composition represented by MoaBibFecWdRbeAfBgChDiOj(SiO2)k, wherein A is Ni, Mg, Ca, Sr, Ba, Mn, Co, Cu, Zn, Cd or mixture thereof; B is Al, Cr, Ga, Y, In, La, Ce, Pr, Nd, Sm or mixture thereof; C is Ti, Zr, V, Nb, Ta, Ge, Sn, Pb, Sb, P, B, Te or mixture thereof; D is Ru, Rh, Pd, Re, Os, Ir, Pt, Ag or mixture thereof; SiO2is silica, when a is 10, b is 0.1 to 1.5, c is 0.5 to 3.0, d is 0.01 to 2.0, e is 0.02 to 1.0, f is 2.0 to 9.0, g is 0 to 5, h is 0 to 3, i is 0 to 2, k is 10 to 200; and j is the atomic ratio of oxygen determined by the valence of other elements (excluding silicon); and (a×2+d×2)/(b×3+c×3+e×1+f×2+g×3) is 0.90 to 1.00.

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U.S. Appl. No. 12/446,759, filed Apr. 23, 2009, Yanagita, et al.

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