I need high performance bifunctional metal-acid catalyst to promote conversion of lignin to cycloalkanes. I will use MOF based catalyst as the acid catalyst. However, the acidity type that is required is Bronsted acid. So, I have to functionalize MOF catalyst with sulfonic acid (SO3H).
The conversion process will be held in tetralin solvent at temperature between 200-300°C. It means that I have to enhance the thermal and chemical stability of MOF-SO3H catalyst. Can you suggest a method to enhance its thermal and chemical stability? Reference will be helpful.
You are going to carry out the reaction in aprotic tetralin solvent. The aprotic solvents have a powerful differentiating effect on the properties of acids and bases. Your conclusion that "I have to functionalize MOF catalyst with sulfonic acid (SO3H)" is not evident. In addition, lignin and MOF are likely to be insoluble in tetralin. How the solid catalyst can react with a solid substrate?
Dear Prof Yurii V Geletii,
I use the sulfonated MOF as heterogenous catalyst, so it doesn't need to be soluble in the solvent. I want to conduct liquefaction process which can break lignin to liquid monomeric phenol (phenol, guaiacol, and syringol) then hydrodeoxygenate it into cycloalkane using tetralin as the hydrogen donor solvent. The problem is this process need high reaction temperature (200-300°C). Do you have any idea to improve the thermal stability of MOF catalyst? Could you also explain about the capability of aprotic solvent to differentiate acid-base properties? Does it affect the catalysis ability of sulfonated MOF? Thank you.
You can't use tetralin as a solvent at 200-300°C
Critical temperature: 174 °C
Critical pressure: 36.0 atm
"the capability of aprotic solvent to differentiate acid-base properties" is described in numerous textbooks.
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