Does B exist in the form of high-boiling substances?
Thread Content
Recently, it was found that it is difficult to achieve the required standards for purifying B at our facility; it seems that B exists in the form of high-boiling substances. Has the legendary B-high-boiling substance really appeared? I wonder if other students have encountered this? This post was last edited by LHY8771 on 2009-4-15 09:57.]
B is definitely a low-boiling substance; the boiling point of BCl3 is 15 degrees. What unit are you using? I’m working in medium energy units, and we can handle it
The chlorides and complexes of B are low-boiling substances, right? B must exist in the form of compounds. I’m a beginner; please forgive any mistakes!
What do you all think about using wet N2 to remove B during distillation? Our company has adopted this, and it really works well! But many so-called experts in China do not acknowledge Russia’s technology
The high-boiling substances of B? It should be difficult. Removal of B by wet N2? Is this technology feasible? How low can B be reduced?
Is wet nitrogen introduced into the purification tower? Could the trays get clogged by the hydrolysis products? Could you explain this process of removing boron from wet nitrogen gas? Thank you
We have tested the purified high-boiling substances here, and indeed B is present, in relatively high concentrations
Boron is possible to come out at high boiling points! I once detected boron levels above 600 PPb in Distillation 2#
B must be a low-boiling substance; it’s not specified
Operational experience shows that B exists in a reconstituted form; if B consists entirely of what is referred to as the light components? Then, element B shouldn’t appear in the bottom of the distillation and weight-removal tower. That’s my personal opinion; I hope experts can offer some guidance.
Which company does 5# belong to? Nanbo? ? ? Have you started removing boron with wet nitrogen? ?
Does the Cl element in SiCl4 or SiHCl3 form a coordination bond with the B element? Just like the dimeric structure of BCl3? I have always thought it was possible
Please analyze the material components carefully: B exists in a chlorosilane solution in two forms, a low-boiling substance (boron chloride) and a high-boiling substance (forming complexes with metal ions such as aluminum and iron). Therefore, it is very difficult to achieve a material balance for boron during distillation. The same phenomenon occurs in P as well; a single molecule is a high-boiling substance, so its impact is minimal.
The technology for producing wet nitrogen is feasible; patent documents on this subject existed in the United States as early as the 1970s. The separation is primarily achieved by using water vapor to react with chlorosilanes, thereby producing hydroxyl hydrates of the chlorosilanes, which then react with boron-containing compounds to form polymers.