A Method of Mechanical Grinding-Catalytic Reduction Combined Treatment of Stock DDT Compounds
A technology of mechanical grinding and combined treatment, which is applied in the direction of protection devices against harmful chemicals, can solve the problems of incomplete degradation, low degradation efficiency, secondary pollution, etc., and achieve good production and practical value, high catalytic activity, and high efficiency The effect of treatment
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0025] Example 1, weigh 0.4 g of DDT sample, put it into the grinder, then add 18 mg of CaO, the grinding temperature is normal temperature (30 ℃), and the grinding time is 1.0 h; then add 80 mL of 70% ethanol-water mixed solution, to In the catalytic reduction reactor, add 10mg of Pd / C catalyst, use hydrogen as the hydrogen source, and carry out catalytic reduction treatment on the DDT dehydrochlorination product in the liquid phase in the presence of inorganic alkali NaOH, the reaction pressure is 0.1 MPa, and the reaction temperature is controlled at 40 ℃, the reaction was stirred by a mechanical stirrer and hydrogen gas was passed through. For specific results, see figure 2 .
Embodiment 2
[0026] Example 2, weigh 1.0 g of DDT sample, put it into a grinder, and then add different alkaline substances, the grinding temperature is normal temperature, and the grinding time is 1.0 h; then add 80 mL of 70% isopropanol-water mixed solution, until the catalytic In the hydrogenation reactor, add 10 mg Pd / C catalyst, use hydrogen as the hydrogen source, and carry out catalytic reduction treatment on the DDT dehydrochlorination product in the liquid phase in the presence of inorganic alkali NaOH, the reaction pressure is 0.1 MPa, and the reaction temperature is controlled at 50 °C, the reaction was stirred by a mechanical stirrer and hydrogen gas was passed. The specific results are shown in Table 1. {Dechlorination efficiency = (total chlorine content - chlorine content after reaction) / total chlorine content}
[0027]
Embodiment 3
[0028] Example 3, weigh 0.4 g of DDT sample, add it to the grinder, then add 18 mg CaO, the grinding temperature is normal temperature, and the grinding time is 1.0 h; then add 80 mL of 70% isopropanol-water mixed solution, In the hydrogen reactor, add 20 mg of different supported noble metal catalysts, use hydrogen as the hydrogen source, and carry out catalytic reduction treatment on the DDT dehydrochlorination product in the liquid phase in the presence of inorganic alkali, the reaction pressure is 0.1 MPa, and the reaction temperature is controlled at 40 °C, the reaction was stirred by a mechanical stirrer and passed through hydrogen. The specific results are shown in Table 2.
[0029]
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More