…The Zahn process (intermediate salt process) adds solid NH 4 HCO 3 to a solution containing other easily soluble sodium salts NaX (X = SO 4 , NO 3 , etc.) to precipitate NaHCO 3. The liquid ammonia process (liquid ammonia process) uses the high solubility of NaCl in liquid NH 3 to produce sodium carbamate, which is then decomposed with steam to obtain NaHCO 3. NaCl + NH 3 + CO 2 - → NaCO 2 NH 2 + NH 4 Cl NaCO 2 NH 2 + H 2 O - → NaHCO 3 + NH 3Pressurized A process is carried out by pressurizing the CO 2 to several tens of atmospheres, but the overall reaction rate of A process is not that favorable. … *Some of the terminology used in relation to the "liquid ammonia process" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ツァーン法(中間塩法)は易溶性の他種ナトリウム塩NaX(X=SO4,NO3など)を共存させた溶液に固体NH4HCO3を添加し,NaHCO3を析出させる。液体アンモニア法(液安法)はNaClが液体NH3に対し高溶解性をもつことを利用し,カルバミン酸ナトリウムをつくり,これを水蒸気分解してNaHCO3を得る。 NaCl+NH3+CO2―→NaCO2NH2+NH4Cl NaCO2NH2+H2O―→NaHCO3+NH3加圧下ア法はCO2圧力数十気圧まで加圧して行う方法であるが,ア法全体として反応率がそれほど有利にはならない。… ※「液体アンモニア法」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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