摘要
采用周期操作的丙烷氧化脱氢制丙烯固定床反应装置,使丙烷的氧化和催化剂的氧化在不同的时间进行,利用WxCeOy催化剂体相的晶格氧氧化丙烷,减少深度氧化,提高反应的选择性。考察了W与Ce摩尔比及活性组分负载量对催化剂催化性能的影响,以及丙烷氧化脱氢的反应条件。在反应温度390℃、空速180h-1时,丙烷转化率为6.5%,丙烯选择性为86.5%,表明WxCeOy催化剂对丙烷氧化脱氢制丙烯有较好的低温催化性能。
A fixed bed reactor operating in cycle was used to study the oxidative dehydrogenation of propane to prepare propylene over a WxCeOy catalyst. The propane oxidation and catalyst oxidation were scheduled in different time, so that the lattice oxygen of the catalyst could be used to oxidize propane, and over oxidation could be suppressed. Factors affected propane oxidative dehydrogenation, such as W/Ce mole ratio, active components loading, reaction temperature and space velocity, were investigated. Under the optimum reaction conditions of a reaction temperature of 390 ℃ and a space velocity of 180 h^-1 ,the conversion of propane was 6. 5% and selectivity of propylene reached 86. 5%. It was concluded that WxCeOy catalyst exhibited good catalytic performance in oxidative dehydrogenation of propane to form propylene at low temperature
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2007年第4期47-50,共4页
Petroleum Processing and Petrochemicals
关键词
丙烷
氧化脱氢
丙烯
催化剂
propane
oxidative dehydrogenation
propylene
catalyst
