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Dev Dhanaraj Suresh Patents |
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Inventor: Suresh; Dev Dhanaraj
Address: Hudson, OH
No. of patents: 9
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6667020 |
Ammoxidation of a mixture of ketones to acetonitrile and HCN |
December 23, 2003 |
| A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ketones, ammonia and air, into a |
| 6451730 |
Two-stage preparation of promoted V/Sb-oxide ammoxidation catalysts |
September 17, 2002 |
| A process for the preparation of a promoted VSbO.sub.x catalyst comprising mixing a vanadium compound, at least a first portion of an antimony compound, and at least a portion of the support material to form a slurry, heating the slurry to remove the water, calcining the dried slurry to |
| 6413485 |
Ammoxidation of a mixture of ketones to acetonitrile and HCN |
July 2, 2002 |
| A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ketones, ammonia and air, into a |
| 6268529 |
Method for the manufacture of acrylic acid |
July 31, 2001 |
| A process for the manufacture of acrylic acid comprising reacting propylene and oxygen (preferably in the form of air) in a reaction zone having a catalyst characterized by the following formula:whereA=one or more of Li, Na, K, Rb and CsB=one or more of Mg, Sr, Mn, Ni, Co and ZnC=one or more |
| 5877108 |
Performance of used molybdenum based catalysts by the addition of ammonium dimolybdate |
March 2, 1999 |
| A process for regenerating molybdenum containing ammoxidation catalyst comprising replacing the molybdenum loss from the catalyst during the ammoxidation reaction wherein ammonium dimolybdenum is utilized as the source for replacement of the molybdenum loss from the original catalyst. |
| 5840648 |
Catalyst for the manufacture of acrylonitrile and hydrogen cyanide |
November 24, 1998 |
| A catalyst composition comprising a complex of catalytic oxides of iron, bismuth, molybdenum and calcium and characterized by the following empirical formula:where A=one or more of Li, Na, K, Rb and Cs or mixtures thereofB=one or more of Mg, Mn, Ni, Co, Ag, Pb, Re, Cd and Zn or mixtures ther |
| 5821192 |
Method of improving the attrition resistance of V/SB oxide based catalyst |
October 13, 1998 |
| A process for preparing a catalyst having the following formula:wherein M=tin, titanium, lithium, sodium, potassium, molybdenum, tungsten, iron, chromium, cobalt, copper, gallium, niobium, tantalum, tellurium, bismuth, or mixtures thereof,a=0.1 to 5, preferably 0.1 to 3, most preferably 0.1 |
| 5770757 |
Ammoxidation catalysts containing germanium to produce high yields of acrylonitrile |
June 23, 1998 |
| A catalyst having the atomic ratios set forth in the empirical formula below:whereA=two or more of alkali metals, In and TlB=one or more of Mg, Mn, Ni, Co, Ca, Fe, Ce, Sm, Cr, Sb, and W; preferably B equals the combination of Fe and at least one element selected from the group consisting |
| 5688739 |
Ammoxidation catalysts containing germanium to produce high yields of acrylonitrile |
November 18, 1997 |
| A catalyst having the atomic ratios set forth in the empirical formula below:whereA=two or more of alkali metals, In and TlB=one or more of Mg, Mn, Ni, Co, Ca, Fe, Ce, Sm, Cr, Sb, and W; preferably B equals the combination of Fe and at least one element selected from the group consisting |
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