Manganese octahedral molecular sieve catalysts for selective styrene oxide ring opening

Autor:	Steven L. Suib, Craig A. Calvert, Shanthakumar Sithambaram, Linping Xu, Yun-Shuang Ding, Chun-Hu Chen, Ranjit Kumar
Rok vydání:	2009
Předmět:	chemistry.chemical_compound chemistry Transition metal Nucleophile Styrene oxide Inorganic chemistry Epoxide General Chemistry Lewis acids and bases Molecular sieve Catalysis Styrene
Zdroj:	Catalysis Today. 140:162-168
ISSN:	0920-5861
DOI:	10.1016/j.cattod.2008.10.007
Popis:	Manganese octahedral molecular sieve (OMS) catalysts prepared by different methods have been employed for terminal ring opening of epoxides. Conversions ranging from 14% to 80% were obtained depending on the properties of the OMS catalysts. The catalysts act as Lewis acids in the reaction to facilitate nucleophilic attack on styrene oxide. Doping with other transition metals such as V, W, and Mo may alter the Lewis acidity of the materials and hence, leads to significant enhancement in conversions (100%) and selectivities for the ring opening. Effects of different solvents and nucleophiles were also studied in the reaction. This process using OMS catalysts is environmentally friendly and the catalysts can be reused without loss of activity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::74e1699460b95f2fb4324ef4dbe3b853 https://doi.org/10.1016/j.cattod.2008.10.007 Zobrazit plný text záznamu Full Text from ScienceDirect