FeCO3 (Iron Carbonate) 합성 방법

FeCO3 합성 방법을 검색해보니 위키피디아에서는 FeCl2 와 Na2CO3 의 당량 반응을 진행하면 합성이 된다고 하네요. (https://en.wikipedia.org/wiki/Iron(II)_carbonate)

FeCl 2 + Na 2CO 3 → FeCO 3 + 2NaCl 

Solid state reaction 으로 진행하지 않고 distilled water를 사용해서 합성을 처음 시도했었습니다. 

첫 합성 시도는 실패였고 다른 논문들 찾으면서 방법을 좀 더 알아보고 실험을 다시 진행해보고 있습니다. 참고한 논문의 실험 방법은 다음과 같습니다. 

Urea 를 CO2 source 로 사용하는 것 같습니다. 뭐 일단 시도는했는데 결과가 어떻게 나올지가 궁금하네요. 아래 논문에서는 NH4HCO3와 Urea 를 비교하는 것 같은데요. 저는 일단 Urea를 이용한 합성법으로 시도해보고 어떤 결과가 나올지 확인해봐야겠네요.

Synthesis of FeCO3 samples

All of the chemicals were analytic grade and the water in the experiment was deionized water. In a typical preparation process, 0.606 g Fe(NO3)3·9H2O and 1.08 g CO(NH2)2 were dissolved in 30 ml mixed solution of 15 ml H2O and 15 ml ethylene glycol under magnetic stirring. After stirring for 20 min, 0.6 g ascorbic acid was added to the above solution. Finally, the mixture was transferred to a Teflon lined autoclave with 50 ml and maintained at 160 °C for 5 h. When it was cooled down to the room temperature, the product was washed by H2O and anhydrous ethanol for several times. Finally, the sample was dried in a vacuum oven at 50 °C for 6 h. The product obtained was marked as FCO-1.

For comparison, CO(NH2)2 was replaced with NH4HCO3 and other operation process was the same as that described above. Then the sample synthesized was marked as FCO-2.

출처: http://www.sciencedirect.com/science/article/pii/S0925838816339500