| abstract |
A process for the production of light olefins from a feedstock comprising an oxygenate or mixture of oxygenates, the process comprising reacting the feedstock at effective conditions over a catalyst comprising boron-containing molecular sieve having the CHA crystal structure and comprising (1) silicon oxide and (2) boron oxide or a combination of boron oxide and aluminum oxide, iron oxide, titanium oxide, gallium oxide and mixtures thereof; and wherein the mole ratio of silicon oxide to boron oxide in said boron-containing molecular sieve is between 15 and 125. A method for production of light olefins, comprising selecting the catalyst and reacting a feedstock comprising an oxygenate or mixture of oxygenates, at effective conditions, over the catalyst. Also, a method for production of light olefins, comprising selecting the catalyst, selecting the oxygenate feedstock, and reacting the feedstock at effective conditions over the catalyst. |