Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Patent
1983-10-28
1985-06-04
Wright, William G.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
502150, 502180, 502417, 502418, 502425, B01J 2714, B01J 3102, B01J 2720
Patent
active
045215286
ABSTRACT:
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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