摘要:
A process for preparing styrene by contacting a gaseous feed which contains 1-phenylethanol and at least 0.1 %wt of phenol and/or ethylphenol with a heterogeneous dehydration catalyst in the presence of at least 0.40 %wt of benzylalcohol and at a molar ratio of benzylalcohol to total amount of phenol and ethylphenol of at least 0.8.
摘要:
The invention relates to a process for the liquid phase oxidation of ethylbenzene into ethylbenzene hydroperoxide, wherein the ethylbenzene hydroperoxide concentration is kept below 20 wt.% on the basis of the total weight of the reaction mixture, and wherein styrene and/or a styrene derivative is fed to the ethylbenzene. The concentration of said styrene and/or a styrene derivative may be from 0.01 to 5.0 wt.%.