Study On High - Throughput Experimental Technology For Wet Catalyst Catalytic Oxidation

In the past decades, the researches of catalytic wet oxidation reaction most focus on heterogeneous catalytic wet oxidation reaction. The catalysts of heterogeneous catalytic wet oxidation reaction most exist in solid state. The separation of catalyst and the wastewater is much easier, which make the process greatly simplified. Moreover, the catalysts of heterogeneous catalytic wet oxidation reaction also have characteristics of high catalytic activity and good stability, etc. Hence, development of high stability, high stable catalysts is the key to industrial production in catalytic wet oxidation process. Many researchers choose several kinds of active metal to explore its best effect of wastewater treatment, but this method is time-consuming and expensive. There are so many metal elements in the periodic table, and the metal active component is different, with different treatment capacity for wastewater. So the experiment cycle will be shorten by developed a quick screening method in the selection of optimal proportion of active metal technology.High-throughput material screening developed as a new screening technology in recent years, with the characteristics of trace, rapid and sensitive, and a large number of experimental data can be detected in a short period of time. High-throughput screening technology is the application of advanced technology. By screening and evaluating the catalytic activity of a large number of analysis sample at the same time, we can screen out metal catalysts ratio with high catalytic.Based on the biological chip technology in the field of biology, we use high-throughput screening method to screen metal catalysts. A number of small units are arranged on a flat surface in the form of micro array, each unit represents a reaction area. And each small unit corresponds to different metal active component. The technology can greatly reduce the selection time of the metal on the properties of the best catalytic activity. As each reaction unit area is very small, reagents and materials used in the experimental process will also be greatly reduced.This text will make experiment design on metal catalytic, the research priorities include design of the experimental apparatus, design of the reaction chip, selection of test method, collection of images, and data acquisition and analysis. This research chooses experiment device including atomization device, fog transmission device, mist store bottle, droplets receivers. The detection method is trial production test; Image acquisition completed by the scanner; Data acquisition and analysis is finished by Imagepro Plus software and PhotoShop software.The experimental results are as follow:(1) By comparing and the feasibility analysis of experiment, we make the chip by inkjet printing method. The production processes mainly include the selection of chip material, the adhesion of hydrophobic coating, carrier layer coating and the load of catalyst. In this way, we produced reaction chips which meet the requirements of the experiment.(2) In the process of designing the reaction chip, we chose Cu, Zn, Ni, Fe, Co, V, Mo, La, Sm, Dy, Nd and Y in the experiment. Metal catalyst can load on the carrier (SiO2), different proportion are formed in the metallic data "library".(3)After making test paper, by testing the paper precision and paper diffusivity, the result certify that the detection effect of pH test strips is very good, and the diffusion effect is not obvious. So the paper can meet the needs of the experiment.(4) In the simulation experiments, we chosen the catalytic organic matter, such as ethylene glycol and glucose. The different proportion dispensing of ethylene glycol and H2O2, glucose and H2O2were made. The results showed that in the experiment of ethylene glycol oxidation and glucose oxidation, when the quality ratio was respectively1:3and1:5, the reaction showed the most significant effect.(5) In the process of experimental verification, by comparing the pH of the reaction solution of without catalyst and with catalyst, we can get that metal catalysts had played a good role in promoting the oxidation of organic matter, different proportion of catalyst screened in this way really had good activity.