Discovery of highly porous material
Scientists from the University of Uppsala (Sweden) discovered a new substance - one of the forms of magnesium carbonate, which has a huge porosity - 800m 2 / g. The entire volume of upsalite (the so-called resulting substance) is filled with tiny empty pores of about 6 nm 3 . This substance is easy and cheap [as compared to its counterparts?], It can be used to eliminate the effects of emissions of toxic chemicals, chemicals and oil spills.
In nature, magnesium carbonate MgCO 3 has a crystalline structure and contains a huge amount of water. Receiving a pure substance is costly.
At present, silica gel, zeolites, metal-organic materials and carbon nanotubes are used for adsorption.
During [what?] Experiment, Johan Gomez de la Torre and his colleagues left some of the material in the reaction chamber for the weekend. On Monday, they discovered the appearance of a solid gel, which they were unusually interested in with their properties. Obtaining highly porous material was not their goal, so you can talk about the proportion of chance in the discovery [and what was?]. To repeat the experiment, scientists took another year.
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In a microscope, upsalit looks like this:
a) 1 nm b) 200 nm c) 50 nm. The “c” picture shows a contrast in the sizes of the pores (pores of different sizes).
Production of anhydrous magnesium carbonate is possible under several conditions. A particularly important parameter is temperature.
The top graph shows the X-ray diffraction analysis. The middle graphs show the characteristics of spectroscopy: the ability of the molecules under study in the inelastic (Raman or Raman) scattering of monochromatic light; infrared Fourier transform spectroscopy. The bottom graphs show the analysis of the input substances in the X-ray and photoelectron spectrum.
The graphs show the dependences of 1) adsorbability (i.e. absorption) on pressure, 2) porosity values on pore volume 3) adsorbability on relative humidity
The table shows the main characteristics of the absorption of nitrogen gas N 2 and water H 2 O
Synthesis of a substance is shown in the figure below.
Formulas for obtaining:
Perhaps the upsalit will indeed find application in industry. Ease and cheapness will play a positive role.
If you have any news on the questions in square brackets, please write in the comments.
Updates are also welcome.
What was before
In nature, magnesium carbonate MgCO 3 has a crystalline structure and contains a huge amount of water. Receiving a pure substance is costly.
At present, silica gel, zeolites, metal-organic materials and carbon nanotubes are used for adsorption.
Discovery history
During [what?] Experiment, Johan Gomez de la Torre and his colleagues left some of the material in the reaction chamber for the weekend. On Monday, they discovered the appearance of a solid gel, which they were unusually interested in with their properties. Obtaining highly porous material was not their goal, so you can talk about the proportion of chance in the discovery [and what was?]. To repeat the experiment, scientists took another year.
')
In a microscope, upsalit looks like this:
a) 1 nm b) 200 nm c) 50 nm. The “c” picture shows a contrast in the sizes of the pores (pores of different sizes).
Research results
Spectroscopy
Production of anhydrous magnesium carbonate is possible under several conditions. A particularly important parameter is temperature.
The top graph shows the X-ray diffraction analysis. The middle graphs show the characteristics of spectroscopy: the ability of the molecules under study in the inelastic (Raman or Raman) scattering of monochromatic light; infrared Fourier transform spectroscopy. The bottom graphs show the analysis of the input substances in the X-ray and photoelectron spectrum.
physical characteristics
The graphs show the dependences of 1) adsorbability (i.e. absorption) on pressure, 2) porosity values on pore volume 3) adsorbability on relative humidity
Result table
The table shows the main characteristics of the absorption of nitrogen gas N 2 and water H 2 O
Substance synthesis
Synthesis of a substance is shown in the figure below.
Formulas for obtaining:
Conclusion
Perhaps the upsalit will indeed find application in industry. Ease and cheapness will play a positive role.
If you have any news on the questions in square brackets, please write in the comments.
Updates are also welcome.
Source: https://habr.com/ru/post/188154/
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