Solubilities (S) of KBPh4 in water, methanol, ethanol, 1-propanol, 1-butanol,1-pentanol, 1-hexanol, 1-octanol at 288.15, 298.15, 308.15, 318.15, 328.15K have been determined by the spectrophotometry. These data can be...Solubilities (S) of KBPh4 in water, methanol, ethanol, 1-propanol, 1-butanol,1-pentanol, 1-hexanol, 1-octanol at 288.15, 298.15, 308.15, 318.15, 328.15K have been determined by the spectrophotometry. These data can be expressed by 1gS=-(1.4184-0.8725lgn)/(1-132.45T-1), where n are the atomic number of carbon for the straight chains monohydric alcohols; T is the temperatuxe. The standard transfer free energies (△tG) of KBPh4 from water to straight chains monohydric alcohols in the temperature ranges of 288.15-328.15K have been calculated. The results can be expressed as △tG=-18.029+5.766×10-5T2+(6.817×10-2-5.302×10-10T3)-1lgn.展开更多
Solubilities of ammonium tetraphenylborate (NH4BPh4) in water- t- butyl alcohol (TBA) mixed solvents at 283.15,293.15,298.15,303.15 and 308.15 K have been determined by spectrophotometry.The standard Gibbs energy of t...Solubilities of ammonium tetraphenylborate (NH4BPh4) in water- t- butyl alcohol (TBA) mixed solvents at 283.15,293.15,298.15,303.15 and 308.15 K have been determined by spectrophotometry.The standard Gibbs energy of transfer (Δ G t) of NH4BPh4 from water to H2O- TBA mixtures and the primary medium effect of NH4BPh4 from 283.15 to 308.15 K were studied.The results show that－Δ G t exhibits a complicated variation pattern with the increase in the mole fraction of TBA [x(TBA)] at the same temperature .When x(TBA) < 0.06,－Δ G t increases very slowly with x(TBA),the－Δ G t increases rapidly with x(TBA) when x(TBA) from 0.06 to 0.2.For x(TBA)> 0.2,the－Δ G t decreases with increasing x(TBA).The largest value of －Δ G t occurs at x(TBA) = 0.2.The main reason for this variation was analyzed and discussed.展开更多
The effect of magnetic field on the rate constant of reaction for potassium ferricyanide with ascorbic acid has been studied within the temperature range of 298.15～313.15K.The results show that the rate constant of r...The effect of magnetic field on the rate constant of reaction for potassium ferricyanide with ascorbic acid has been studied within the temperature range of 298.15～313.15K.The results show that the rate constant of reaction for potassium ferricyanide with ascorbic acid is evidently increased under the optimum magnetic field.The decreasing values of activation enthalpy and entropy are 12.74kJ·mol -1 and 38.99J·mol -1 ·k -1 .The cause of the effect of magnetic field on the reaction rate of potassium ferricyanide with ascorbic acid was discussed.展开更多
针对胜利油田临盘采油厂的高含水稠油,研制出了低温高效破乳剂TKQ。该破乳剂由酚胺树脂聚醚和聚酰胺-季铵盐两种组分组成。结果表明,TKQ破乳剂在温度为30℃,浓度为100 mg/l的条件下,静置90 m in时的脱水率可达90%,水相中含油量在100 mg/...针对胜利油田临盘采油厂的高含水稠油,研制出了低温高效破乳剂TKQ。该破乳剂由酚胺树脂聚醚和聚酰胺-季铵盐两种组分组成。结果表明,TKQ破乳剂在温度为30℃,浓度为100 mg/l的条件下,静置90 m in时的脱水率可达90%,水相中含油量在100 mg/l以下,无中间层,与临盘采油厂正在使用的破乳剂及其它商品破乳剂相比,优势明显。破乳剂TKQ对渤海SZ36-1油田的稠油也有很好的脱水效果,具有较好的适应性。展开更多
文摘Solubilities (S) of KBPh4 in water, methanol, ethanol, 1-propanol, 1-butanol,1-pentanol, 1-hexanol, 1-octanol at 288.15, 298.15, 308.15, 318.15, 328.15K have been determined by the spectrophotometry. These data can be expressed by 1gS=-(1.4184-0.8725lgn)/(1-132.45T-1), where n are the atomic number of carbon for the straight chains monohydric alcohols; T is the temperatuxe. The standard transfer free energies (△tG) of KBPh4 from water to straight chains monohydric alcohols in the temperature ranges of 288.15-328.15K have been calculated. The results can be expressed as △tG=-18.029+5.766×10-5T2+(6.817×10-2-5.302×10-10T3)-1lgn.
文摘Solubilities of ammonium tetraphenylborate (NH4BPh4) in water- t- butyl alcohol (TBA) mixed solvents at 283.15,293.15,298.15,303.15 and 308.15 K have been determined by spectrophotometry.The standard Gibbs energy of transfer (Δ G t) of NH4BPh4 from water to H2O- TBA mixtures and the primary medium effect of NH4BPh4 from 283.15 to 308.15 K were studied.The results show that－Δ G t exhibits a complicated variation pattern with the increase in the mole fraction of TBA [x(TBA)] at the same temperature .When x(TBA) < 0.06,－Δ G t increases very slowly with x(TBA),the－Δ G t increases rapidly with x(TBA) when x(TBA) from 0.06 to 0.2.For x(TBA)> 0.2,the－Δ G t decreases with increasing x(TBA).The largest value of －Δ G t occurs at x(TBA) = 0.2.The main reason for this variation was analyzed and discussed.
文摘The effect of magnetic field on the rate constant of reaction for potassium ferricyanide with ascorbic acid has been studied within the temperature range of 298.15～313.15K.The results show that the rate constant of reaction for potassium ferricyanide with ascorbic acid is evidently increased under the optimum magnetic field.The decreasing values of activation enthalpy and entropy are 12.74kJ·mol -1 and 38.99J·mol -1 ·k -1 .The cause of the effect of magnetic field on the reaction rate of potassium ferricyanide with ascorbic acid was discussed.
文摘针对胜利油田临盘采油厂的高含水稠油,研制出了低温高效破乳剂TKQ。该破乳剂由酚胺树脂聚醚和聚酰胺-季铵盐两种组分组成。结果表明,TKQ破乳剂在温度为30℃,浓度为100 mg/l的条件下,静置90 m in时的脱水率可达90%,水相中含油量在100 mg/l以下,无中间层,与临盘采油厂正在使用的破乳剂及其它商品破乳剂相比,优势明显。破乳剂TKQ对渤海SZ36-1油田的稠油也有很好的脱水效果,具有较好的适应性。
