发明授权
US5002918A Molded articles based on pyrogenically produced mixed-oxide systems of
silicon dioxide and aluminum oxide, a method for manufacturing them and
their use
失效
基于热解产生的二氧化硅和氧化铝的混合氧化物体系的成型制品，其制造方法及其用途
- 专利标题： Molded articles based on pyrogenically produced mixed-oxide systems of silicon dioxide and aluminum oxide, a method for manufacturing them and their use
- 专利标题（中）： 基于热解产生的二氧化硅和氧化铝的混合氧化物体系的成型制品，其制造方法及其用途
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申请号： US488382申请日： 1990-02-23
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公开(公告)号： US5002918A公开(公告)日： 1991-03-26
- 发明人: Klaus Deller , Rainhard Klingel , Helmfried Krause , Klaus-P. Bauer
- 申请人： Klaus Deller , Rainhard Klingel , Helmfried Krause , Klaus-P. Bauer
- 申请人地址： DEX
- 专利权人： Degussa Aktiengesellschaft
- 当前专利权人： Degussa Aktiengesellschaft
- 当前专利权人地址： DEX
- 优先权： DEX3803899 19880209
- 主分类号： C04B38/06
- IPC分类号： C04B38/06 ; B01J21/12 ; B01J32/00 ; B01J35/10 ; B01J37/00 ; C04B35/14
摘要：
A molded; i.e. pressed, article based on a pyrogenically produced system of mixed oxides of silicon dioxide and aluminum oxide and having the following physical-chemical features:______________________________________ pellet diameters 2 to 15 mm BET surface area according to 90 to 200 m.sup.2 /g DIN 66131 pore volume 0.6 to 1.3 ml/g pore size distribution no pores with 75% by weight of SiO.sub.2, remainder Al.sub.2 O.sub.3 ______________________________________ These molded articles are manufactured by homogenizing a pyrogenically produced system of mixed oxides of silicon dioxide and aluminum oxide with graphite and/or kaolin, urea, sugar, starch, glaze frit powder and/or microcrystalline wax while water is being added, by drying the mixture at a temperature between 80.degree. and 120.degree. C. and then comminuting it into a powder that next is pressed into molded articles and then is annealed for 0.5 to 6 h at a temperature between 400.degree. and 1050.degree. C. The molded articles are used as catalyst-supporters or as catalysts.
公开/授权文献
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