Calcium;potassium;sulfate

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 碱土金属氧阴离子化合物
• 英文名称: Calcium;potassium;sulfate
• 化学式: 2Ca*2K*3O₄S
• 分子量: 446.543
• InChiKey: XOZREOIZDKNXBN-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  -4.71
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  88.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  Calcium;potassium;sulfate 在 H₂O 作用下， 以 neat (no solvent) 为溶剂， 生成 syngenite
  参考文献：
  名称：

  Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: K: App.Vol., 71, page 178 - 180

  摘要：

  DOI：
• 作为产物：
  描述：

  syngenite 以 neat (no solvent) 为溶剂， 生成 Calcium;potassium;sulfate
  参考文献：
  名称：

  Schreiber, H., Neues Jahrbuch für Mineralogie, Geologie und Paläontologie. Beilage-band, 1914, vol. 37, p. 267 - 267

  摘要：

  DOI：

文献信息

• Thermal decomposition of syngenite, K2Ca(SO4)2·H2O
  作者：J.Theo Kloprogge、Zhe Ding、Wayde N. Martens、Roelof D. Schuiling、Loc V. Duong、Ray L. Frost

  DOI：10.1016/j.tca.2003.12.001

  日期：2004.7

  The thermal decomposition of syngenite, K2Ca(SO4)2.H2O, formed during the treatment of liquid manure has been studied by Thermal Gravimetric Analysis, Differential Scanning Calorimetry, high temperature X-ray diffraction and Infrared Emission Spectroscopy. Gypsum was found as a minor impurity resulting in a minor weight loss due to dehydration around 100 degrees Celsius. The main endothermic dehydration

  已经通过热重分析、差示扫描量热法、高温 X 射线衍射和红外发射光谱研究了在处理液体粪便过程中形成的同生岩 K2Ca(SO4)2.H2O 的热分解。石膏被发现是一种微量杂质，在 100 摄氏度左右脱水会导致轻微的重量损失。在 200 摄氏度左右观察到同生岩的主要吸热脱水和分解阶段为结晶 K2Ca2(SO4)3 和无定形 K2SO4。该反应涉及固态重结晶，而水和 K2SO4 从现有晶格中扩散出来。大约 250 和 350 摄氏度的额外重量损失步骤可能是由于存在较大的同生岩颗粒，由于水和 K2SO4 较慢地从晶格中扩散出来，它们表现出较慢的分解。大约 450 摄氏度的少量吸热硫酸盐损失不是由于同生岩或其产物或石膏杂质的分解。这种硫酸盐的来源尚不清楚。注意：文件在单独的文件中
• Heat-capacity measurements and thermodynamic functions of langbeinite-type K2Cd2(SO4)3 and K2Ca2(SO4)3 at temperatures from 10K to 340K
  作者：Hongjie Cao、Juliana Boerio-Goates

  DOI：10.1016/0021-9614(94)90003-5

  日期：1994.3

  (SO 4 ) 3 and of K 2 Ca 2 (SO 4 ) 3 at temperatures T from 12 K to 345 K and from 7 K to 340 K, respectively. Smoothed values of the standard molar thermodynamic properties of these materials are presented at round temperatures between 10 K and 340 K. At T = 298.15 K, the heat capacity and entropy are (343.6 ± 0.7) J · K −1 · mol −1 and (436.9 ± 0.8) J · K −1 · mol −1 for K 2 Cd 2 (SO 4 ) 3 , and (338

  摘要 使用绝热量热计对 K 2 Cd 2 (SO 4 ) 3 和 K 2 Ca 2 (SO 4 ) 3 的充分表征的结晶样品在 12 K 至 345 K 和 7 K 的温度 T 下进行热容量测量分别为 340 K。这些材料的标准摩尔热力学性质的平滑值在 10 K 和 340 K 之间的圆形温度下呈现。在 T = 298.15 K 时，热容和熵为 (343.6 ± 0.7) J · K -1 · mol -1 和(436.9 ± 0.8) J · K -1 · mol -1 对于 K 2 Cd 2 (SO 4 ) 3 ，和 (338.9 ± 0.7) J · K -1 ·mol -1 和 (416.2 ± 0.8) J · K - K 2 Ca 2 (SO 4 ) 3 为1 mol -1 。已经通过 dsc 在 300 K 到 510 K 的温度范围内检查了这两种化合物的相变。两种材料在 dsc
• DE306315
  申请人：——

  公开号：——

  公开（公告）日：——
• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: K: MVol.4, 4.3, page 888 - 894
  作者：

  DOI：——

  日期：——
• Thermal behaviour of mixtures of an alunite ore with K2CO3, CaCO3 and Ca(OH)2
  作者：P. Cipriani、G. Marruzzo、L. Piga、F. Pochetti

  DOI：10.1016/s0040-6031(97)00073-7

  日期：1997.7

  The thermal behaviour of alunite/K2CO3, alunite/CaCO3 and alunite/Ca(OH)(2) mixtures has been established. DTA coupled with XRD analysis has allowed appraisal of the main reactions that occur when the mixtures are roasted up to about 1000 degrees C. The main products of roasting are K2SO4, CaSO4 and other sulphur compounds and aluminates which retain the SO3 deriving from the alunite. The products are formed between 700 and 800 degrees C, The aim of the work was to assess the feasibility of a thermal process for use in the case of certain kaolin deposits whose exploitation is impossible at the present time because they are contaminated with alunite (KAl3(SO4)(2)(OH)(6)) This mineral causes great difficulty when attempting to use these kaolin ores because kilning drives off SO3 which corrodes the furnaces and is environmentally harmful. The K2SO4 and CaSO4 produced by roasting the indicated mixtures can be leached with water and dilute HCl respectively and the former can be used as fertiliser. The leaching residue, with its reduced sulphur content, can then be employed by the ceramics and building industries. (C) 1997 Elsevier Science B.V.