Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Reexamination Certificate
2003-07-04
2009-12-01
Hailey, Patricia L (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
C502S209000, C502S210000, C502S211000, C502S212000, C502S213000, C502S305000, C502S308000, C502S311000, C502S317000, C502S319000, C502S321000, C502S324000, C502S325000, C502S344000, C502S345000, C502S353000, C502S355000
Reexamination Certificate
active
07625834
ABSTRACT:
In a method of producing a catalyst for the production of methacrylic acid, which has a composition of the following formula (1), when mixing 100 parts by mass of a solution or a slurry (liquid A) containing molybdenum atoms, phosphorous atoms and vanadium atoms in which the content of ammonium species is 0 to 1.5 mol relative to 12 mol of the molybdenum atoms, 5 to 300 parts by mass of a solution or a slurry (liquid B) containing 6 to 17 mol of ammonium species relative to 12 mol of the molybdenum atoms contained in the liquid A and a solution or a slurry (liquid C) containing an element Z such as cesium, the liquid B is mixed with the liquid A, the liquid C or a mixture of the liquid A and the liquid C over 0.1 to 15 minutesin-line-formulae description="In-line Formulae" end="lead"?PaMobVcCudXeYfZgOh (1).in-line-formulae description="In-line Formulae" end="tail"?
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U.S. Appl. No. 10/577,136, filed Apr. 25, 2006, Naitou, et al.
Karasuda Takashi
Naitou Hiroyuki
Hailey Patricia L
Mitsubishi Rayon Co. Ltd.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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