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US 11,779,905 B2Granted
Catalyst compositions and process for direct production of hydrogen cyanide in an acrylonitrile reactor feed stream
AssigneeAscend Performance Materials Operations LLC
InventorsYawu T. Chi, Scott G. Moffatt, Mikhail Khramov, Ranjeeth Reddy Kalluri, Bruce F. Monzyk, Soundar Ramchandran, Marty Alan Lail, Maruthi Sreekanth Pavani
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Abstract
The present invention relates to catalyst compositions containing a mixed oxide catalyst of formula (I) or formula (II) as described herein, their preparation, and their use in a process for ammoxidation of various organic compounds to their corresponding nitriles and to the selective catalytic oxidation of excess NH3 present in effluent gas streams to N2 and/or NOx.
Claims16
A catalyst composition comprising a mixed oxide catalyst of formula
- FeMoiCrjBikMmNnQqXxYyOr (II)
- wherein in the formula (II):
- M is Ce and/or Sb;
- N is La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ti, Zr, Hf, B, Al, Ga, In, TI, Si, Ge, Sn, Pb, P, and/or As;
- Q is Ru, and/or Os;
- X is Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mn, Re, V, Nb, Ta, Se, and/or Te;
- Y is an alkaline earth metal and/or an alkali metal;
- 0.2≤i≤100;
- 0≤j≤2;
- 0≤k≤2;
- 0.05≤m≤10;
- 0≤n≤200;
- 0<q≤8;
- 0≤x≤30;
- 0≤y≤8;
- j and k<i;
- m>j;
- and
- r is the number of oxygen atoms required to satisfy the valence requirements of the component elements other than oxygen present in formula (II),
- wherein:
- 4≤m+n+q+x+y≤200;
- 0<q+x+y≤30;
- and
- wherein the catalyst composition has a surface area of from 2 to 500 m2/g as determined by the Brunauer-Emmett-Teller (BET) method.
21 more elements
Dependencies are inferred from the claim text.