稀土氧化物对WO_3-Bi_2O_3催化剂性能的影响  

INFLUENCES OF RARE EARTH OXIDES ON PROPERTY OF WO_3-Bi_2O_3 CATALYST

作　　者：王继业[1] 李铭岫[1] 

机构地区：[1]河北师范大学化学学院,石家庄050091

出　　处：《精细石油化工》2003年第5期36-38,共3页Speciality Petrochemicals

基　　金：河北省自然科学基金 (2 0 0 15 1);河北省科学技术厅攻关项目 (0 0 2 13 0 10 3D)

摘　　要：在WO3 Bi2 O3 催化剂中加入镧系稀土氧化物 ,并在固定床反应器中考察了稀土氧化物对异丁烯转化成甲基丙烯醛的影响。较佳的实验条件为 :反应温度 4 10℃ ,异丁烯在原料气中的浓度 10 % ,稀土氧化物添加量 15 % ,原料气流速 30mL/min。实验表明 ,添加CeO2 、Eu2 O3 及Tb4O7后 。Lanthanoide oxides were mixed in the WO 3 Bi 2O 3 catalyst respectively, and their influences on the catalytic performance for selective oxidation of isobutene to methacrolein were studied in the fixed bed reactor. The optimal conditions were as follows: reaction temperature 410 ℃, concentration of isobutene in the reactant gases 10%, LnO x mass fraction in WO 3 Bi 2O 3 catalysts 15% and flow rate of the reactant gases 30 mL/min. The experimental results showed that the conversion of isobutene and the selectivity for methacrolein were improved by adding CeO 2, Eu 2O 3 and Tb 4O 7.

关 键 词：WO3-Bi2O3催化剂 稀土氧化物 性能评价 固定床反应器 

分 类 号：TQ426[化学工程] TE624.9[石油与天然气工程—油气加工工程]