公开(公告)号：US06316383B1

公开(公告)日：2001-11-13

申请号：US09344488

申请日：1999-06-25

申请人： Thomas Tacke ,  Peter Schinke ,  Hermanus Lansink Rotgerink ,  Helmfried Kraus

发明人： Thomas Tacke ,  Peter Schinke ,  Hermanus Lansink Rotgerink ,  Helmfried Kraus

IPC分类号： B01J2108

CPC分类号： B01J35/026 ,  B01J19/30 ,  B01J21/08 ,  B01J2219/30223 ,  B01J2219/30416 ,  B01J2219/30475 ,  B01J2219/312 ,  C07C67/055 ,  Y10T428/131 ,  Y10T428/1317 ,  C07C69/01 ,  C07C69/15

摘要： Moldings based on silica having a hollow cylindrical configuration with internal reinforcing stays or spokes leading from an inner wall of a hollow cylinder to the center of the molding or in the form of miniliths having passageway channels therethrough, are produced by homogenizing silica with methyl hydroxyethyl cellulose, wax and/or polyethylene glycol. Water and optionally aqueous alkaline ammonia solution are added, and the mixture is subjected to kneading and forming, extruding, optionally cutting the extrudate to the desired length by means of a cutting device, drying at a temperature from 20 to 150° C., and annealing for a period from 30 minutes to 10 hours at a temperature of 400 to 1200° C. The moldings can be used as catalyst supports for the production of unsaturated esters from olefins, organic acids and oxygen in the gas phase and and can be used in particular for the production of vinyl acetate monomer.

摘要翻译： 基于二氧化硅的模制品具有中空圆柱形构造，其具有从中空圆柱体的内壁到模制中心或具有通道通道的微透镜形式的内部加强支柱或辐条，其通过用甲基羟乙基纤维素 ，蜡和/或聚乙二醇。 加入水和任选的碱性氨水溶液，将混合物进行捏合和成形，挤出，任选地通过切割装置将挤出物切割成所需长度，在20至150℃的温度下干燥，以及 在400〜1200℃的温度下退火30分钟〜10小时。成型体可以用作在气相中由烯烃，有机酸和氧气生产不饱和酯的催化剂载体，并且可以使用 特别是用于生产乙酸乙烯酯单体。