2,3-Dihydroxybutanedioic Acid → Lead oxide sulfate (Pb4O3(SO4))

HRID 2285696

反応式

HRID 2285696 の反応式
S(O)(O)(=O)=[O:2].NO.C(O)(=O)C(C(C(O)=O)O)[OH:10].[O:18]=[Pb:19]=O.[S:21](=[O:25])(=[O:24])([OH:23])[OH:22]>[Pb]=O.C(O)(=O)C.O>[O-2:2].[O-2:10].[O-2:18].[O-:24][S:21]([O-:25])(=[O:23])=[O:22].[Pb+2:19].[Pb+2:19].[Pb+2:19].[Pb+2:19]

参加物

8

反応物 4

HCID 8752,3-Dihydroxybutanedioic AcidHCID 1118Sulfuric AcidHCID 14793Lead dioxideHCID 159255Hydroxylamine, sulfate (1:1)

生成物 1

HCID 9941248Lead oxide sulfate (Pb4O3(SO4))

試薬・触媒・溶媒 3

HCID 176Acetic Acid溶媒HCID 962Water溶媒HCID 14827Lead monoxide溶媒4 回

実験手順

Water was added to the starting lead monoxide powder containing 0.89% or 0.07% of PbOn to form a slurry having a PbO concentration of 93 g/l and a pH value of 9.8. A 2-liter capacity beaker was charged with 985 ml of the so prepared lead monoxide slurry, and 0.7 ml of acetic acid having a concentration of 2.2 moles/l was added to the slurry on a water bath under agitation by a glass vane. The mixture was agitated for 10 minutes, and 0.8 ml of hydroxylamine sulfate having a concentration of 0.84 mole/l and 0.03 g of powdery tartaric acid were added to the mixture. The mixture was sufficiently agitated to reduce lead peroxide present in the lead monoxide slurry (pH=9.7), and then, the mixture was heated. When the slurry temperature was elevated to 65° to 70° C., 26.61 ml of sulfuric acid having a concentration of 3.861 moles/l was gradually added dropwise to the slurry over a period of 30 minutes (the pH value was 6.3 or 6.4 at the initial stage of addition) and the mixture was agitated at 65° to 70° C. for 40 minutes to effect aging. Thus, there were obtained two kinds of tribasic lead sulfate base slurries having pH values of 8.4 and 8.5, respectively.

後処理

  1. additioncontaining 0.89% or 0.07% of PbOn
  2. customto form a slurry
  3. additionwas added to the slurry on a water bath under agitation by a glass vane
  4. stirringThe mixture was sufficiently agitated
  5. temperaturethe mixture was heated
  6. customwas elevated to 65° to 70° C.
  7. additionstage of addition) and the mixture
  8. stirringwas agitated at 65° to 70° C. for 40 minutes

出典と根拠

ORDレコード
ord-1ec0f4e79a644dc395fbd55338dd6b39
出典データセット
uspto-grants-1982_04
特許番号
US04324768

関連ノート

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