Catalyst for preparing linalyl acetate by hydrogenation of dehydrogenated linalyl acetate
The invention discloses a hydrogenation catalyst which is used for preparing linalyl acetate by using dehydroabietic linalyl acetate The catalyst uses calcium carbonate as a carrier, loaded active components of the catalyst comprises Pd, Pb and component A, wherein, the constituent A is a mixture of...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a hydrogenation catalyst which is used for preparing linalyl acetate by using dehydroabietic linalyl acetate The catalyst uses calcium carbonate as a carrier, loaded active components of the catalyst comprises Pd, Pb and component A, wherein, the constituent A is a mixture of one or both of Bi and Zn, total content of Pd and Pb in the catalyst is 0.1 to 4.0 percent by weight, mass ratio of Pd to Pb is between 5 to 1 and 1 to 1, and content of the component A in the catalyst is 0.5 to 3.0 percent by weight. Compared with common Lindlar catalysts, the catalyst of the invention has the advantages that the catalyst does not need to use compounds of naphthyridine and quinoline, etc., as catalyst accelerators, does not use solvents in the hydrogenation process and has higher product selectivity under the precondition of high conversion rate; furthermore, the dosage of noble metal Pd is markedly reduced. |
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