| 摘要 |
The present invention is directed to a method for preparing a homogenous activated carbon/zirconium or hafnium phosphate product in situ which comprises mixing a carbonaceous organic material with a zirconium or hafnium compound and a phosphoric acid or phosphate salt, and heat-treating said mixture under conditions to convert the carbonaceous material into activated carbon and to convert the zirconium or hafnium compound into zirconium or hafnium phosphate. Advantageously, a molar excess of phosphoric acid over that required to convert the zirconium (or hafnium) compound into zirconium (or hafnium) phosphate is used. Advantageously, also, the heat-treated mixture is washed to remove excess phosphoric acid and dried to remove moisture. Another advantageous embodiment of the invention comprises forming the mixture into a desired shape prior to its heat-treating.
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