RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • SCOPUSKCI등재

        가스법에 의한 염기성 탄산마그네슘의 제조 : 4 . 염기성 탄산마그네슘의 생성 4 . Formation Process of Basic Magnesium Carbonate

        이정자,이문득,나익영 한국화학공학회 1973 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.11 No.1

        The following results have been obtained through the studies on the preparation of basic magnesium carbonate by gas method. The basic magnesium carbonate could be identified by means of the pH measurement, chemical analysis, refractive index, X-ray diffraction and microscopic studies. The formation of basic magnesium carbonate from Mg (OH)₂ suspension and CO₂ depended on the concentration of Mg (OH)₂ in the suspension and the flow rate of CO₂ as well as on temperature. The basic magnesium carbonate formation with 0.24 mole/ℓ of Mg (OH)₂ suspension and CO₂ flow rate of 33 ㎖/min. at 70-90℃ did not give MgCO₃ · 3H₂O, but gave a compound with mole ratio of CO₂/MgO of 0.75-0.84, which corresponds approximately to (3-5) MgCO₃ · Mg(OH)₂ · (3-5) H₂O. The refractive index was about 1.531. When Mg(HCO₃)₂ solution was heated, a metastable compound was formed initially, which then transformed into MgCO₃ · 3H₂O, and this in turn gave basic magnesium carbonate by decomposition (into CO₂ and H₂O). In order to obtain the best quality basic salt, it is therefore important to assure that Mg(OH)₂ neutral Mg-salt and amorphous compound do not coexists in the finished product.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼