发明名称 |
PREPARATION OF ALUMINA HAVING INCREASED POROSITY |
摘要 |
2131796 9317967 PCTABS00025 A process for making high porosity boehmite alumina comprising forming an aqueous dispersion of a boehmite alumina which has been obtained by hydrothermally treating an aqueous mixture of a precursor boehmite alumina at a pH of from about 5 to about 9 for a period of time sufficient to convert the greater portion of the precursor boehmite alumina to a colloidal sol, treating the dispersion of the hydrothermally treated alumina to form a viscous gel and subjecting the gel to sufficient shearing force for a sufficient period of time to increase the pore volume by at least 30 % and the median pore radius by at least 20 %.
|
申请公布号 |
CA2131796(A1) |
申请公布日期 |
1993.09.16 |
申请号 |
CA19932131796 |
申请日期 |
1993.02.25 |
申请人 |
|
发明人 |
DECKER, LEWIS BERNARD, JR.;ERICKSON, DWIGHT DAVID;BARCLAY, DAVID ALAN |
分类号 |
B01J13/00;C01F7/02;(IPC1-7):C01F7/02 |
主分类号 |
B01J13/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|