Fixed bed catalyst to light olefins, preparation and use thereof

The present invention relates to a fixed-bed catalyst to light olefins, preparation and use thereof, mainly to solve the synthesis gas to olefins present in the reaction prior art low CO conversion rate and the selectivity to light olefins, using a catalyst strength conditions, poor thermal stability. The catalyst employed in the present invention, in parts by weight comprises the following components: a) 30 ~ 80 parts of iron or an oxide thereof; b) 10 ~ 40 parts selected from manganese and chromium or an oxide of at least one element; c) at least one element or oxide of 10 to 40 parts selected from copper and zinc; D) or at least one element selected from potassium oxide of 0.9 to 20, and cesium; E) 0.9 to 20 selected from cerium and neodymium oxide of at least one element thereof; F) 0.5 to 10 parts aspect antimony element or an oxide thereof, a better solution to the problem, can be used for industrial production of Fischer-Tropsch synthesis of light olefins .