The isothermal mutual solubility and phase relation of MgSO 4-Li 2SO 4-C 2H 5OH-H 2O system at 25 ℃ have been investigated by using a homemade micro-equilibrium and sampling apparatus. The demixing phenomenon of the ...The isothermal mutual solubility and phase relation of MgSO 4-Li 2SO 4-C 2H 5OH-H 2O system at 25 ℃ have been investigated by using a homemade micro-equilibrium and sampling apparatus. The demixing phenomenon of the system′s at below room temperature was observed. The precise demixing composition and composition of double-saturated point of the system have been determined. A unique effect, namely additive property between MgSO 4 and Li 2SO 4 has been observed and explained in terms of "pseudo-ternary system" concept. An empirical formula has been worked out to correlate the mutual solubility.展开更多
以2-溴乙酸、壳聚糖、2-硫代四氢咪唑啉酮为原料,合成了不同接枝率的壳聚糖g--N-羧甲基-2-硫代-4,5-2H咪唑啉酮(CTS-g-CSIDZ),并对其理化性质进行了考察。用配合滴定法测定了该聚合物对Cd2+、CrO42-、Fe3+、Cu2+、Pb2+等重金属离子的吸...以2-溴乙酸、壳聚糖、2-硫代四氢咪唑啉酮为原料,合成了不同接枝率的壳聚糖g--N-羧甲基-2-硫代-4,5-2H咪唑啉酮(CTS-g-CSIDZ),并对其理化性质进行了考察。用配合滴定法测定了该聚合物对Cd2+、CrO42-、Fe3+、Cu2+、Pb2+等重金属离子的吸附作用;进行了聚合物的悬菌定量实验,测定了接枝聚合物对一系列细菌的抑菌能力;采用失重法研究了合成的聚合物在1 mol/L HC l溶液中对N80钢片腐蚀的抑制作用。结果表明,部分接枝的CSIDZ比小分子化合物具有更高的对测试的多数金属离子吸附作用的热稳定性;接枝CSIDZ具有较强的抑菌效果,最小抑菌浓度为5.10 g/L;接枝CSIDZ比小分子缓蚀剂具有更高的热稳定性,在90℃时对N80钢片的缓蚀效率仍然可以达到71.1%,且用量仅为小分子化合物CSIDZ的1/2。展开更多
文摘The isothermal mutual solubility and phase relation of MgSO 4-Li 2SO 4-C 2H 5OH-H 2O system at 25 ℃ have been investigated by using a homemade micro-equilibrium and sampling apparatus. The demixing phenomenon of the system′s at below room temperature was observed. The precise demixing composition and composition of double-saturated point of the system have been determined. A unique effect, namely additive property between MgSO 4 and Li 2SO 4 has been observed and explained in terms of "pseudo-ternary system" concept. An empirical formula has been worked out to correlate the mutual solubility.
文摘以2-溴乙酸、壳聚糖、2-硫代四氢咪唑啉酮为原料,合成了不同接枝率的壳聚糖g--N-羧甲基-2-硫代-4,5-2H咪唑啉酮(CTS-g-CSIDZ),并对其理化性质进行了考察。用配合滴定法测定了该聚合物对Cd2+、CrO42-、Fe3+、Cu2+、Pb2+等重金属离子的吸附作用;进行了聚合物的悬菌定量实验,测定了接枝聚合物对一系列细菌的抑菌能力;采用失重法研究了合成的聚合物在1 mol/L HC l溶液中对N80钢片腐蚀的抑制作用。结果表明,部分接枝的CSIDZ比小分子化合物具有更高的对测试的多数金属离子吸附作用的热稳定性;接枝CSIDZ具有较强的抑菌效果,最小抑菌浓度为5.10 g/L;接枝CSIDZ比小分子缓蚀剂具有更高的热稳定性,在90℃时对N80钢片的缓蚀效率仍然可以达到71.1%,且用量仅为小分子化合物CSIDZ的1/2。