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公开(公告)号:US5324695A
公开(公告)日:1994-06-28
申请号:US2415
申请日:1993-01-08
IPC分类号: B01J23/92 , B01J23/84 , B01J23/90 , B01J23/94 , B01J37/00 , B01J38/02 , B01J38/12 , B01J38/60 , C07C45/35 , C07C2/68
CPC分类号: B01J38/60 , B01J23/90 , B01J37/0036 , B01J37/0045 , C07C45/35 , Y02P20/584
摘要: A process for regenerating deactivated metal oxide catalysts comprising at least one of the elements antimony, iron, bismuth, molybdenum, vanadium, tungsten and/or uranium and a peptizable carrier, comprises the steps of:a) grinding the metal oxide catalyst in the presence of water to a particle size of from 10 nm to 10 .mu.m,b) heating the aqueous suspension of the metal oxide catalyst of stage a) to 30-100.degree. C. and adding an acid which peptizes the carrier,c) spray drying the acidic suspension of the metal oxide catalyst,d) heating the fluidizable metal oxide catalyst particles of stage c) to 500.degree.-850.degree. C.
摘要翻译: 包含锑,铁,铋,钼,钒,钨和/或铀和可胶溶载体中至少一种元素的失活的金属氧化物催化剂的再生方法包括以下步骤:a)在存在下研磨金属氧化物催化剂 的水至10nm至10μm的粒度,b)将a)段的金属氧化物催化剂的水悬浮液加热至30-100℃,并加入对载体进行胶溶的酸,c)喷雾干燥 金属氧化物催化剂的酸性悬浮液,d)将阶段c)的可流化金属氧化物催化剂颗粒加热至500℃-850℃。
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公开(公告)号:US5225574A
公开(公告)日:1993-07-06
申请号:US682295
申请日:1991-04-09
申请人: Heinrich Aichinger , Wilhelm Ruppel , Rolf Seubert , Karl-Heinz Boehning , Walter Scheidmeir , Johannes E. Schmidt , Matthias Schwarzmann
发明人: Heinrich Aichinger , Wilhelm Ruppel , Rolf Seubert , Karl-Heinz Boehning , Walter Scheidmeir , Johannes E. Schmidt , Matthias Schwarzmann
IPC分类号: B01J23/18 , B01J23/22 , B01J27/198 , C07B61/00 , C07C51/265 , C07D307/89
CPC分类号: B01J23/002 , B01J23/22 , B01J27/198 , C07C51/265 , B01J2523/00
摘要: Phthalic anhydride is prepared in a multiple tube reactor provided with separate salt baths, the temperature of the salt bath used for cooling the first layer of catalyst, as regarded in the direction of flow of the reaction mixture, being from 2.degree. to 20.degree. C. higher than that of the salt bath(s) associated with the following layer(s).
摘要翻译: 在具有单独的盐浴的多管反应器中制备邻苯二甲酸酐,用于冷却第一层催化剂的盐浴的温度,如在反应混合物的流动方向所考虑的,为2至20℃ 高于与下一层相关的盐浴的温度。
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