1860-13-5Relevant articles and documents
Isomerization and dimerization reactions of methyloxirane over various types of zeolite and zeotype
Palinko,Fasi,Kiricsi,Goemoery
, p. 340 - 344 (2007/10/03)
A study on the ring-opening reactions of methyloxirane on different zeolites and zeotypes, i.e., HZSM-5, CuZSM-5, HY, AlMCM-41, SiMCM-41, and BMCM-41 at 363 K either in a pulse reactor or in a circulation system, in the presence of hydrogen or nitrogen showed that methyloxirane underwent single (isomerization) and double (deoxygenation) ring-opening, as well as dimerization reactions over different types of acidic zeolites and zeotypes. The acidic molecular sieves were active in isomerization (the products were propionaldehyde and acetone) and dimerization (the products were dioxolane and dioxane derivatives) reactions. The transformations proceeded on Bronsted or relatively strong Lewis acid sites, or their combination. The major products were dimers, i.e., dioxolane and dioxane derivatives. A confined environment was advantageous for dimerization to occur. However, this reaction route was also viable when the pore size was large and possibly on nonporous but acidic substances as well.
