公开(公告)号：US5118654A

公开(公告)日：1992-06-02

申请号：US748772

申请日：1991-08-22

申请人： Vasant R. Choudhary ,  Meenakshi Y. Pandit ,  Sopan T. Chaudhari

发明人： Vasant R. Choudhary ,  Meenakshi Y. Pandit ,  Sopan T. Chaudhari

IPC分类号： B01J21/10 ,  B01J23/02 ,  B01J37/04 ,  C07C2/84

CPC分类号： C07C2/84 ,  B01J21/10 ,  B01J23/02 ,  B01J37/04 ,  C07C2521/10 ,  C07C2523/04 ,  Y02P20/52 ,  Y10S585/943

摘要： A process for preparation of an improved Li-promoted MgO catalyst useful for oxidative coupling of methane to ethane and ethylene, in presence of free oxygen, which comprises (i) mixing thoroughly powdered magnesium acetate and lithium acetate, which are catalyst precursors, with Li/Mg mole ratio of 0.01-1.0 with or without water, the H.sub.2 O/magnesium acetate weight ratio being in the range of 0-5.0, (ii) heating the mixture, while stirring, to dryness at a temperature of about 60.degree.-300.degree.C., (iii) powdering and calcining the dried mixture at a temperature of about 500.degree.-1000.degree.C. in presence of air, O.sub.2, CO.sub.2, inert gas (like N.sub.2, He, Ar, etc.) or their mixture or under vacuum for about 1-100 h and (iv) making by known methods the pellets, extrudates or granules of the catalyst of required size.

摘要翻译： 一种在游离氧存在下，用于制备可用于甲烷氧化偶联甲烷和乙烯的改进的Li-促进的MgO催化剂的方法，其包括（i）将完全粉末状的乙酸镁和催化剂前体的乙酸锂与Li / Mg摩尔比为0.01〜1.0，H 2 O /醋酸镁重量比在0-5.0的范围内，（ii）在搅拌下将混合物加热至约60-300℃的温度 （iii）在空气，O 2，CO 2，惰性气体（如N 2，He，Ar等）或其混合物存在下，在约500-1000℃的温度下粉化和煅烧干燥的混合物 或在真空下约1-100小时，和（iv）通过已知方法制备所需尺寸的催化剂的颗粒，挤出物或颗粒。