Acid-Base Catalysis II: Proceedings of the International by Hideshi Hattori, Makoto Misono, Yoshio Ono

By Hideshi Hattori, Makoto Misono, Yoshio Ono

Reliable acid catalysts are already getting used in a number of tactics in petroleum refining and are shortly being studied intensively in either educational and utilized fields for utilization in numerous reactions. sturdy base catalysts also are gaining expanding attractiveness as power catalysts. either acidic and uncomplicated catalysts are promising not just with appreciate to acid and base-catalysed reactions but in addition in fabrics sciences, reminiscent of the construction of adsorbents, sensors, ceramics, and so on. the current quantity comprises the textual content of 21 invited oral displays and fifty eight poster shows. the cloth covers a variety of points on acid-base catalysis, from quantum chemistry to industrialised methods.

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Additional info for Acid-Base Catalysis II: Proceedings of the International Symposium on Acid-Base Catalysis Ii, Sapporo, December 2-4, 1993

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Dealkylation of 2,6-di-t-butylphenolderivatives to 2-t-butylphenols R R is also widely used for the synthesis of antioxidants. Here H3PW12040 and H4SiW,2040 are efficient homogeneous and heterogeneous catalysts (R = H, Me, Et, CH3CH2COOMe) [40, 411. The heterogeneous process proceeds at 130-150°C in the presence of HPA (4 w t %) in the melted substrate. Mo-HPA are rapidly deactivated due to their reduction by the reaction medium. HPA are tens of times more active than such catalysts as ion-exchange resins, A1 0 -Si02, 2 7 aluminium sulfate, etc.

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