Effect of acid modification of kaolin and metakaolin on Brønsted acidity and catalytic properties in the synthesis of octahydro-2H-chromen-4-ol from vanillin and isopulegol

1. Timofeeva, M.N.
2. Panchenko, V.N.
3. Volcho, K.P.
4. Zakusin, S.V.
5. Krupskaya, V.V.
6. Gil, A.
7. Mikhalchenko, O.S.
8. Vicente, M.A.