Hello All,
I want to perform silanization reactions at 200 L scale. Currently we perform these test in 10 L glass reactors dedicated for this project. I wanted to know if I can scale this up to larger reactors, do I have to use glass lined reactors or can I use like stainless steel reactors. Unfortunately I work at pH 4 and have used HCL to adjust pH. What do companies use at large scale for silanization. Also would make a silane coating on your glass if you use it.
Dear Rakesh , for the high scale silanization reaction you follow the ph value less then 4 for the using stainless steel. and there are lots of article also available.
http://www.scielo.br/pdf/jaos/v21n4/1678-7757-jaos-21-4-0335.pdf
Article Silanization of Stainless Steel Surfaces: Influence of Appli...
https://www.intechopen.com/books/biomaterials-physics-and-chemistry/silanization-with-aptes-for-controlling-the-interactions-between-stainless-steel-and-biocomponents-r
I imagine that polymer or glass rather than metal (and certainly rather than stainless steel) is needed at low pH with HCl. I also imagine that a polymer vessel will do better than glass because the glass vessel itself must be consuming some silane to coat itself. Finally, for successful scale up, I am sure at a minimum that you must standardize the fluid mechanics and heat transfer of your new (larger) system to be comparable to those of the old (smaller) unit, for example through dimensionless analysis.
The coated or resin infiltrated Synthetic Graphite vessels could serve the purpose (not being expert of silanization process). These materials can be used at very aggressive environments (also used in HCl synthesis Plants ).
Dear Rakesh , for the high scale silanization reaction you follow the ph value less then 4 for the using stainless steel. and there are lots of article also available.
http://www.scielo.br/pdf/jaos/v21n4/1678-7757-jaos-21-4-0335.pdf
Article Silanization of Stainless Steel Surfaces: Influence of Appli...
https://www.intechopen.com/books/biomaterials-physics-and-chemistry/silanization-with-aptes-for-controlling-the-interactions-between-stainless-steel-and-biocomponents-r
@Jeffrey thank you for your suggestion and I am looking for something that can do the same in our plant. Yes scaling up issues would need to be tackled one at time.
@Abhishek we have glass lined reactors in our plant which we can use, but I am afraid that it might make a silane coating on the glass too which might interfere the future application of the vessel for other projects. We dont have graphite vessels and dont want to invest extra specifically for this project
@Neetesh you link is for silanization of enamel for teeth and has no mention of large scale activity
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