大功率CO_2激光器非平衡态合成WO_3/Al_2O_3新型陶瓷催化剂  

Studies on the Novel WO_3/Al_2O_3 Catalyst Synthesized by a High Power CO_2 Laser under Nonequilibrium Condition

作　　者：詹正坤[1] 湛昌国[1] 郑芳[2] 陶星之[3] 王涛[3] 辜建辉[3] 郑启光[3] 李再光[3] 

机构地区：[1]华中师范大学化学系,武汉430079 [2]武汉工业大学新材料研究所,武汉430070 [3]华中理工大学激光技术实验室,430074

出　　处：《应用激光》2000年第6期264-266,共3页Applied Laser

基　　金：国家自然科学基金;激光技术国家实验室基金资助

摘　　要：用大功率 CO2 激光在高温、快速、非平衡态下合成 WO3/ Al2 O3烯烃歧化反应催化剂。利用 XRD、XPS、DTA TG等技术对催化剂的性质进行了研究。表明激光合成催化剂中存在非平衡态的 Alx WO3。低于六价的钨是烯烃歧化反应的活性中心 .同时还考查了催化剂组成、激光功率及熔炼时间与丙烯歧化反应活性之间的关系。A novel WO 3/Al 2O 3 Catalyst for metathesis of olefine were synthesized by the high power CO 2 laser under nonequilibruim condition. XRD、XPS and DTATG techniques have been applied to analyzing the properties of synthesized catalyst. The results obtained reveal that the nonequilibrium product Al xWO 3 contains W atoms which valence is lower than+6,and there W atoms are the active sites of catalyst for the metathesis of olefine. Then it discusses the relations of catalytic activity with composition of the catalyst、laser power and melting time.

关 键 词：二氧化碳激光器 非平衡态 陶瓷 催化剂 激光合成 

分 类 号：TQ426.6[化学工程]