公开(公告)号：US20070274903A1

公开(公告)日：2007-11-29

申请号：US10579595

申请日：2004-11-11

申请人： Eric Laheij ,  Paul O'Connor ,  Dennis Stamires ,  Edisson Morgado ,  Marco Santos De Abreu ,  Marcio Fernandes ,  Michael Brady

发明人： Eric Laheij ,  Paul O'Connor ,  Dennis Stamires ,  Edisson Morgado ,  Marco Santos De Abreu ,  Marcio Fernandes ,  Michael Brady

IPC分类号： C01F7/34 ,  C01F7/44

CPC分类号： C04B35/6303 ,  B82Y30/00 ,  C01F7/02 ,  C01F7/34 ,  C01F7/448 ,  C01P2002/04 ,  C01P2002/70 ,  C01P2004/62 ,  C01P2004/64 ,  C04B35/62605 ,  C04B35/63 ,  C04B2235/3218 ,  C04B2235/5454 ,  C04B2235/549

摘要： Process for the preparation of quasi-crystalline boehmite comprising the steps of: (a) preparing an aqueous precursor mixture comprising a water-insoluble aluminium source; (b) decreasing the pH of the precursor mixture of step (a) by at least 2 units; (c) increasing the pH of the mixture of step (b) by at least 2 units, and (d) aging the mixture of step (c) under hydrothermal conditions to form a quasi-crystalline boehmite. This process provides for the hydrothermal preparation of quasi-crystalline boehmites with high peptizability. The invention therefore further relates to quasi-crystalline boehmites with a high peptizability, measured as the Z-average submicron particle size. This Z-average submicron particle size preferably is less than 500 nm, more preferably less than 300 nm, even more preferably less than 200 nm, and most preferably less than 100 nm.

摘要翻译： 制备准晶体勃姆石的方法，包括以下步骤：（a）制备包含水不溶性铝源的水性前体混合物; （b）将步骤（a）的前体混合物的pH降低至少2单位; （c）将步骤（b）的混合物的pH提高至少2单位，和（d）在水热条件下老化步骤（c）的混合物以形成准结晶勃姆石。 该方法提供了具有高可溶性性的准晶体沸石的水热制备。 因此，本发明进一步涉及具有高可溶性性的准晶体沸石，其测量为Z-平均亚微米粒度。 该Z平均亚微米粒径优选小于500nm，更优选小于300nm，甚至更优选小于200nm，最优选小于100nm。