A Novel Silver-Silica Catalyst Used for the Manufacture of Formaldehyde
Several novel silver-silica catalysts were prepared by means of sol-gel method, which exhibited high activity and selectivity in the catalytic oxidation of methanol to formaldehyde. The optimum content of silver was determined as 20%(w/w.), which showed 97% conversion and 85.5% yield of formaldehyde. Some other superiority of the as-prepared silver catalysts was observed by comparing with the commercial silver catalysts, including pumice-supported silver and electrolytic silver. XRD patterns reveal that silver is present as a crystalline state in the Ag-SiO<SUB>2</SUB> catalysts.
- Chemistry letters
Chemistry letters 1997(3), 197-198, 1997-03