提供了一种用于生产壳催化剂，I.A. 用于在一种惰性载体的有机化学和呈现催化剂材料的周围外壳气相氧化，其特征在于，所述壳的起始材料的悬浮液用通过在载体的移动床和原料气流悬浮介质的部分撤回喷雾，然后干燥和退火。 为了这个目的，支承床移动机械通过吹塑从气流下面松动。 该催化剂前体，粘合剂和，任选地，含有增加量的成孔剂从床的顶部喷入，其中间的量比率喷洒和移除悬挂装置保持近似恒定。 该前体作为干燥粉末的热膨胀系数可以为至多15％，从所述载体的偏离。 将涂覆的培养皿通过继续机械流化和混合运动而被压缩，该材料然后在流动的气体干燥和加入的成孔剂的分解后进一步任选地进行退火。

There is a process for producing coated catalysts, introduced inter alia for gas phase oxidations in organic chemistry of an inert carrier and a this shell surrounding of catalyst material, wherein a suspension of the starting material for the shell under partial withdrawal of the suspension medium by a gas stream onto a moving bed of carrier sprayed and the crude material is then dried and annealed. To this end, the carrier bed is mechanically moved by loosening by a blown Angle gas flow The composition containing a binder and optionally Porenbiidner catalyst precursor is sprayed in increasing amount on top of the bed, where the quantitative proportion between sprayed and remove the suspension means remains approximately constant. The thermal expansion coefficient of the precursor as a dry powder may deviate more than 15% from that of the carrier. The coated shell is compressed by continuing the mechanical and fluidizing mixing movement which then dried well in more flowing gas and optionally by decomposition of an added pore former, tempered.