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Coatings 2021, 11, 854 8 of 13 Figure 5. (a) Raman spectra of group A without NaOH. a, H4BTEC; b, pyromellitic acid hydrate, c, initial saturated solution, d, after dissolution; e, refer stirring for 1 h; f, refer stirring for 3 h, g, refer stirring for 5 h, h, refer stirring for 10 h, i, refer stirring for 12 h. (b) Raman spectra of group B cooling crystallization process monitored. a, H4BTEC; b, pyromellitic acid hydrate, c, initial saturated solution, d, before adding NaOH; e, refer adding NaOH for 1 h, f, refer adding NaOH for 3 h; g, refer adding NaOH for 5 h, h, refer adding NaOH for 10 h, i, refer adding NaOH for 12 h. (c) FTIR of group B cooling crystallization process monitored. a, H4BTEC; b, pyromellitic acid hydrate; c, initial saturated solution, d, before adding NaOH; e, refer adding NaOH for 1 h, f, refer adding NaOH for 3 h, g, refer adding NaOH for 5 h, h, refer adding NaOH for 10 h, i, refer adding NaOH for 12 h. (d) FTIR of the sample after washing with ethanol. The droplet crystallization product was further analyzed by FTIR, as shown in Figure 5c. The infrared peaks of the products sampled after adding sodium hydroxide for 3 and 5 h are consistent. Similarly, adding sodium hydroxide for 10 h and sodium hydroxide for 12 h showed the same peaks. In order to eliminate the influence of nitrate and pyromellitic acid and its hydrates, ethanol and water are used to clean the crystalline products of the naturally volatilized droplets. During the washing process, some sam- ples were completely dissolved and a small amount of samples remained. The remained samples were dried in an oven at 80 ◦C and analyzed by Fourier infrared spectroscopy. Figure 5d shows the comparison between the infrared peaks of the sample after cleaning and the peaks of the raw material pyromellitic acid and the product MIL-121. The results confirmed that the infrared peaks of the sample after cleaning are consistent with those of MIL-121. Combined with the analysis of Raman spectroscopy, it was determined that the natural volatile crystalline product of droplets was a mixture of pyromellitic acid and its hydrate and MIL-121. Trace amounts of MIL-121 nuclei were formed after adding sodium hydroxide for 3 h. It was also determined that the optimal equilibrium time range for the preparation of MIL-121 by adding sodium hydroxide under ambient pressure was 5–10 h. 3.4. Optimization of Synthesis Parameters A parallel crystallizer was used to carry out the optimization experiments under differ- ent reaction temperatures, reaction time, cooling rates, and the addition amount of NaOH. The experimental results were consistent with the conclusions drawn from the process investigation of preparing MIL-121 promoted by sodium hydroxide. That is, the optimal addition amount of NaOH is 1 mL aqueous solution with concentration of 4 mol/L, at a temperature of 80 ◦C, and the preparation time range is 5–10 h. Crystallization with the optimal operation parameters was carried out, and the product yield was higher and the morphology of the products was shown to be more uniform. On the contrary, extending the reaction time did not increase the product yield much, but both energy and time consump-PDF Image | Small Particles for Lithium Adsorption from Brine
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ORC Waste Heat Turbine and ORC System Build Plans: All turbine plans are $10,000 each. This allows you to build a system and then consider licensing for production after you have completed and tested a unit.Redox Flow Battery Technology: With the advent of the new USA tax credits for producing and selling batteries ($35/kW) we are focussing on a simple flow battery using shipping containers as the modular electrolyte storage units with tax credits up to $140,000 per system. Our main focus is on the salt battery. This battery can be used for both thermal and electrical storage applications. We call it the Cogeneration Battery or Cogen Battery. One project is converting salt (brine) based water conditioners to simultaneously produce power. In addition, there are many opportunities to extract Lithium from brine (salt lakes, groundwater, and producer water).Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).We welcome any business and equipment inquiries, as well as licensing our turbines for manufacturing.CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)