| 摘要 |
PROBLEM TO BE SOLVED: To provide a method where, in a tablet forming stage in the production of a solid catalyst for synthesizing (meth)acrylic acid, the precision in the weight of a formed body is improved, the process is stabilized, productivity is improved, and quality irregular spots in a formed part are reduced without changing the shape of the formed part. SOLUTION: In the tablet forming machine where an upper rod and a lower rod are moved up and down, and solid catalyst powder for synthesizing (meth)acrylic acid or the powder of the precursor thereof (hereinafter referred to as raw material powder) is compressed and formed in a packing mortar hole provided at a packing mortar. A taper widened to the outer direction at a gradient of the repose angle of the raw material powder or above is formed at least on a part of the upper part in the packing mortar hole, and the opening area in the upper end face of the opening part is 1.5 to 3.5 times to the area of the lower end face in the opening part. The method for producing a solid catalyst for synthesizing (meth)acrylic acid is characterized in that forming is performing using the tablet forming machine. COPYRIGHT: (C)2009,JPO&INPIT
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